id large_stringlengths 9 16 | title large_stringlengths 1 382 | abstract large_stringlengths 3 6.09k | publish_date date32 | update_date date32 | categories large listlengths 1 13 | authors large_stringlengths 3 62.8k |
|---|---|---|---|---|---|---|
nucl-th/9406036 | Isolated States | We show that a quantum system with nonlocal interaction can have bound states
of unusual type (isolated states (IS)). IS is a bound state that do not
generate a $S$-matrix pole. IS can have positive as well as negative energy and
can be treated as a generalization of bound states embedded in continuum on the
case of di... | 1994-06-30 | 2009-09-25 | [
"nucl-th",
"hep-ph",
"hep-th"
] | A.M.Shirokov, Yu.F.Smirnov, and S.A.Zaytsev |
nucl-th/9406039 | Construction of high-quality Nucleon-Nucleon potential models | We present an updated version (Nijm93) of the Nijmegen soft-core potential,
which gives a much better description of the np data than the older version
(Nijm78). The chi^2 per datum is 1.87. The configuration-space and
momentum-space versions of this potential are exactly equivalent; a unique
feature among meson-theore... | 1994-06-30 | 2009-09-25 | [
"nucl-th"
] | V.G.J. Stoks, R.A.M. Klomp, C.P.F. Terheggen, and J.J. de Swart |
nucl-th/9406038 | Nuclear Transparency in Quasifree Electron Scattering - Theory and
Experiment | We make detailed comparisons between the measured $Q^2$ dependency of nuclear
transparency in quasifree electron scattering and theoretical predictions based
on Glauber theory. We also describe a theory-free method to extract $T$ from
data. | 1994-06-30 | 2008-11-26 | [
"nucl-th"
] | Sherman Frankel, William Frati, and Niels R. Walet |
nucl-th/9406037 | Nucleon Structure Functions from Relativistic Constituent Quarks | We investigate deep inelastic lepton scattering from the nucleon within a
constituent quark picture, in which the internal structure of constituent
quarks is modeled by meson and diquark dressing. In a covariant framework this
structure leads to a breakdown of the factorization necessary for a convolution
formulation. ... | 1994-06-30 | 2009-10-28 | [
"nucl-th"
] | W.Melnitchouk and W.Weise (U. Regensburg) |
nucl-th/9406035 | Electromagnetic Meson Form Factors in the Salpeter Model | We present a covariant scheme to calculate mesonic transitions in the
framework of the Salpeter equation for $q\bar{q}$-states. The full Bethe
Salpeter amplitudes are reconstructed from equal time amplitudes which were
obtained in a previous paper\cite{Mue} by solving the Salpeter equation for a
confining plus an insta... | 1994-06-29 | 2008-11-26 | [
"nucl-th",
"hep-ph"
] | C.R. Muenz, J. Resag, B.C. Metsch, H.R. Petry |
nucl-th/9406034 | Particle-Production Mechanism in Relativistic Heavy-Ion Collisions | We discuss the production of particles in relativistic heavy-ion collisions
through the mechanism of massive bremsstrahlung, in which massive mesons are
emitted during rapid nucleon acceleration. This mechanism is described within
the framework of classical hadrodynamics for extended nucleons, corresponding
to nucleons... | 1994-06-28 | 2007-05-23 | [
"nucl-th"
] | Brian W. Bush and J. Rayford Nix |
nucl-th/9406033 | Classical Hadrodynamics: A New Approach to Ultrarelativistic Heavy-Ion
Collisions | We discuss a new approach to ultrarelativistic heavy-ion collisions based on
classical hadrodynamics for extended nucleons, corresponding to nucleons of
finite size interacting with massive meson fields. This new theory provides a
natural covariant microscopic approach that includes automatically spacetime
nonlocality ... | 1994-06-28 | 2011-04-20 | [
"nucl-th"
] | Brian W. Bush and J. Rayford Nix |
nucl-th/9406031 | Functional approach to the electromagnetic response function: the
Longitudinal Channel | In this paper we address the (charge) longitudinal electromagnetic response
for a homogeneous system of nucleons interacting via meson exchanges in the
functional framework. This approach warrants consistency if the calculation is
carried on order-by-order in the mesonic loop expansion with RPA-dressed
mesonic propagat... | 1994-06-27 | 2008-11-26 | [
"nucl-th"
] | R. Cenni and P. Saracco |
nucl-th/9406032 | Forms of Relativistic Dynamics: What Are the Possibilities? | Various methods of constructing solvable few-body models are reviewed, with
an emphasis on direct interactions with few degrees of freedom, as an
alternative to the use of local quantum field theories. Several applications
are discussed. | 1994-06-27 | 2015-06-26 | [
"nucl-th",
"hep-ph"
] | B. D. Keister |
nucl-th/9406030 | K$^-$-proton scattering and the $\Lambda (1405)$ in dense matter | The scattering of antikaons with nucleons is studied in the nuclear
environment. Describing the $\lam$ as a $K^-$ proton bound state, we find, that
due to the Pauli blocking of intermediate states, the mass of the $\Lambda
(1405)$ is shifted upwards in energy, above the $K^-$ proton threshold and and
its width is somew... | 1994-06-25 | 2009-10-28 | [
"nucl-th",
"hep-ph"
] | Volker Koch |
nucl-th/9406029 | Chiral symmetry in nuclei: partial restoration and its consequences | Partial restoration in nuclear matter of the chiral symmetry of QCD is
discussed together with some of its possible signals. Estimates of corrections
to the leading, linear dependence of the quark condensate are found to be
small, implying a significant reduction of that condensate in matter. The
importance of the pion... | 1994-06-24 | 2009-10-28 | [
"nucl-th",
"hep-ph"
] | Michael C. Birse |
nucl-th/9406027 | Trapping of Projectiles in Fixed Scatterer Calculations | We study multiple scattering off nuclei in the closure approximation. Instead
of reducing the dynamics to one particle potential scattering, the scattering
amplitude for fixed target configurations is averaged over the target
groundstate density via stochastic integration. At low energies a strong
coupling limit is fou... | 1994-06-23 | 2015-06-26 | [
"nucl-th"
] | S. Lenz and D. Stoll |
nucl-th/9406028 | Asymmetric nuclear matter and neutron star properties | We calculate properties of neutron stars such as mass and radius using a
relativistic Dirac-Brueckner-hartree-Fock apprach for asymmetric nuclear
matter. For pure neutron matter we find the maximum mass to be 2.4 solar masses
with a radius of 12 km. For a proton fraction of 30% we find a max mass of 2.1
solar masses an... | 1994-06-23 | 2009-10-28 | [
"nucl-th"
] | L. Engvik, M. Hjorth-Jensen, E. Osnes, G. Bao and E. Oestgaard |
nucl-th/9406024 | RPA calculation of $K^+$-nucleus cross-sections with a density-dependent
Brueckner-Hartree-Fock NN interaction | In the calculation of the $K^+$-nucleus cross sections, the coupling of the
mesons exchanged between the $K^+$ and the target nucleons to the polarization
of the Fermi and Dirac seas has been taken into account. This polarization has
been calculated in the one-loop approximation but summed up to all orders (RPA
approxi... | 1994-06-21 | 2009-10-28 | [
"nucl-th"
] | J. C. Caillon and J. Labarsouque |
nucl-th/9406026 | Photons from axial-vector radiative decay in a hadron gas | Strange and non-strange axial-vector meson radiative decays contribute to
photon production in hadron gas. One- and two-hadron radiative decay modes of
$b_{1}(1235)$, $a_{1}(1260)$ and $K_{1}(1270)$ are studied. At 200 MeV
temperature and for a narrow range in photon energies they contribute more to
the net thermal pho... | 1994-06-21 | 2009-09-25 | [
"nucl-th",
"hep-ph"
] | Kevin Haglin |
nucl-th/9406025 | Antiproton Induced Reactions | The various aspects of antiproton physics are shortly reviewed, and its
relevance for the possible discovery of new particles and effects is pointed
out. Then a survey of the nucleon-antinucleon interactions is given. In the
nucleon-antinucleon annihilations, there is a big amount of experimental data
that call for the... | 1994-06-21 | 2010-11-01 | [
"nucl-th"
] | Jean-Marc Richard |
nucl-th/9406023 | Charge Independence and Symmetry of Nuclear Forces | Charge independence and symmetry are approximate symmetries of nature. The
observations of the small symmetry breaking effects and the consequences of
those effects are reviewed. The effects of the mass difference between up and
down quarks and the off shell dependence $q^2$ of $\rho^0$-$\omega$ mixing are
stressed. In... | 1994-06-20 | 2011-02-01 | [
"nucl-th",
"hep-ph"
] | G.A. Miller (Department of Physics, FM-15, University of Washington,
Seattle, WA) |
nucl-th/9406022 | Partial Wave Analyses of the pp data alone and of the np data alone | We present results of the Nijmegen partial-wave analyses of all NN scattering
data below Tlab = 500 MeV. We have been able to extract for the first time the
important np phase shifts for both I = 0 and I = 1 from the np scattering data
alone. This allows us to study the charge independence breaking between the pp
and n... | 1994-06-18 | 2015-06-26 | [
"nucl-th"
] | R.A.M.M. Klomp, J.-L. de Kok, M.C.M. Rentmeester, Th.A. Rijken, and
J.J. de Swart |
nucl-th/9406020 | Downloading the Nuclear Structure Shell Model Code OXBASH from INTERNET | This document explains how to download the OXBASH code for nuclear structure
calculations from the NSCL anonymous server and get it running on VAX (VMS),
ALPHA (OpenVMS) and IBM RS/6000 (aix) computers. The physics behind the code is
explained in the OXBASH manual, which is part of the downloading package.
Everybody is... | 1994-06-17 | 2007-05-23 | [
"nucl-th",
"hep-lat"
] | Mihai Horoi and Alex Brown |
nucl-th/9406021 | A Limited Symmetry Found by Comparing Calculated Magnetic Dipole Spin
and Orbital Strengths in $^4\mbox{He}$ | Allowing for $2$$\hbar \omega$ admixtures in $^4\mbox{He}$ we find that the
summed magnetic dipole isovector orbital and spin strengths are equal. This
indicates a symmetry which is associated with interchanging the labels of the
spin with those of the orbit. Where higher admixtures are included, the orbital
sum become... | 1994-06-17 | 2009-10-28 | [
"nucl-th"
] | M.S. Fayache and L. Zamick |
nucl-th/9406019 | Nuclear-Spin-Dependent Parity-Nonconserving Effects in Thallium, Lead
and Bismuth Atoms | Nuclear-spin-dependent P-odd optical activity in atomic Tl, Pb and Bi is
calculated. Its magnitude is expressed analytically through the main
contribution to the optical rotation, which is independent of nuclear spin. The
accuracy of results is discussed. | 1994-06-16 | 2015-06-26 | [
"nucl-th"
] | I.B. Khriplovich |
nucl-th/9406018 | Temperature Dependence of the Chiral Condensate from an Interacting Pion
Gas | By exploiting the fact that the chiral condensate is related to the
derivative of the free-energy density with respect to the bare quark mass we
calculate the temperature dependence of the condensate ratio $\ave{\bar
qq}_T/\ave{\bar qq}_0$ from an iteracting pion gas. When using the Weinberg
Lagrangian at the Hartree l... | 1994-06-16 | 2011-04-20 | [
"nucl-th"
] | G. Bunatian and J. Wambach |
nucl-th/9406017 | Quasifree photoabsorption on neutron-proton pairs in 3He | Three-body photodisintegration of 3He is calculated in the photon energy
range 200 - 400 MeV assuming quasifree absorption on np pairs both in initial
quasideuteron and singlet configurations. The model includes the normal
nucleonic current, explicit meson exchange currents and the Delta(1232)-isobar
excitation. The to... | 1994-06-14 | 2009-10-28 | [
"nucl-th"
] | J. A. Niskanen (University of Helsinki), P. Wilhelm and H. Arenhoevel
(University of Mainz) |
nucl-th/9406015 | Two-nucleon knockout contributions to the $^{12}$C$(e,e'p)$ reaction in
the dip and {$\Delta$}(1232) regions | The contributions from $^{12}$C$(e,e'pn)$ and $^{12}$C$(e,e'pp)$ to the
semi-exclusive $^{12}$C$(e,e'p)$ cross section have been calculated in an
unfactorized model for two-nucleon emission. We assume direct two-nucleon
knockout after virtual photon coupling with the two-body pion-exchange currents
in the target nucleu... | 1994-06-13 | 2009-10-28 | [
"nucl-th"
] | J. Ryckebusch, V. Van der Sluys, M. Waroquier, L.J.H.M. Kester, W.H.A.
Hesselink, E. Jans and A. Zondervan |
nucl-th/9406016 | Secondary phi meson peak as an indicator of QCD phase transition in
ultrarelativistic heavy ion collisions | In a previous paper, we have shown that a double phi peak structure appears
in the dilepton invariant mass spectrum if a first order QCD phase transition
occurs in ultrarelativistic heavy ion collisions. Furthermore, the transition
temperature can be determined from the transverse momentum distribution of the
low mass ... | 1994-06-13 | 2009-09-25 | [
"nucl-th",
"hep-ph"
] | M. Asakawa and C. M. Ko |
nucl-th/9406014 | Chiral and Gluon Condensates at Finite Temperature | We investigate the thermal behaviour of gluon and chiral condensates within
an effective Lagrangian of pseudoscalar mesons coupled to a scalar glueball.
This Lagrangian mimics the scale and chiral symmetries of QCD. (Submitted to Z.
Phys. C) | 1994-06-13 | 2009-10-09 | [
"nucl-th"
] | Josef Sollfrank and Ulrich Heinz |
nucl-th/9406013 | Shape Coexistence Around $^{44}_{16}$S$_{28}$: The Deformed N=28 Region | Masses, deformations, radii, and single-particle properties of the very
neutron-rich Sulfur isotopes are investigated in the framework of the
selfconsistent mean-field theory. The stability of the N=28 magic gap around
$^{44}$S is discussed. | 1994-06-10 | 2009-10-28 | [
"nucl-th"
] | T.R. Werner, J.A. Sheikh, W. Nazarewicz, M.R. Strayer, A.S. Umar, and
M. Misu |
nucl-th/9406012 | Chaos in Axially Symmetric Potentials with Octupole Deformation | Classical and quantum mechanical results are reported for the single particle
motion in a harmonic oscillator potential which is characterized by a
quadrupole deformation and an additional octupole deformation. The chaotic
character of the motion is srongly dependent on the quadrupole deformation in
that for a prolate ... | 1994-06-10 | 2009-10-28 | [
"nucl-th",
"chem-ph"
] | W.Dieter Heiss, Rashid G. Nazmitdinov and Stefanel Radu |
nucl-th/9406011 | Off-Shell Rho-Omega Mixing Through Quark Loops With Non-Perturbative
Meson Vertex And Quark Mass Functions | The momemtum dependence of the off-shell $\rho$-$\omega$ mixing amplitude is
calculated through a two-quark loop diagram, using non-perturbative meson-quark
vertex functions for the $\rho$ and $\omega$ mesons, as well as
non-perturbative quark propagators. Both these quantities are generated
self-consistently through a... | 1994-06-10 | 2008-11-26 | [
"nucl-th",
"hep-ph"
] | A. N. Mitra(1,2) and K.-C. Yang(1) ((1)Dept. of Physics, National
Taiwan University, Taipei,Taiwan; (2)Dept. of Physics, University of Delhi,
Delhi, India) |
nucl-th/9406010 | S-Wave Pion-Pion Correlations in Dense Nuclear Matter | The s-wave correlated $\pi$-$\pi$ strength distribution in cold nuclear
matter is investigated. The in-medium single pions are renormalized by means of
the usual p-wave couplings to nucleons and $\Delta$'s. Two groups of models for
the $\pi$-$\pi$ interaction are studied. The first one uses phenomenological
models whic... | 1994-06-09 | 2011-07-19 | [
"nucl-th"
] | Z. Aouissat, R. Rapp, G. Chanfray, P. Schuck and J. Wambach |
nucl-th/9406008 | Mean-field description of ground-state properties of drip-line nuclei.
(I) Shell-correction method | A shell-correction method is applied to nuclei far from the beta stability
line and its suitability to describe effects of the particle continuum is
discussed. The sensitivity of predicted locations of one- and two-particle drip
lines to details of the macroscopic-microscopic model is analyzed. | 1994-06-08 | 2008-11-26 | [
"nucl-th"
] | W. Nazarewicz, T.R. Werner, and J. Dobaczewski |
nucl-th/9406009 | ``Chaos" in Nuclear High Spin Spectroscopy | The Projected Shell Model with zero-, two- and four-quasiparticle
configurations is used to investigate the level statistics, i.e. chaoticity, of
high spin spectroscopy. The model can describe many high spin phenomena and
with the present configuration space has sufficient number of levels for
statistical analysis. It ... | 1994-06-08 | 2009-09-25 | [
"nucl-th"
] | Yang Sun, Da Hsuan Feng, Hsi-Tseng Chen and Hua Wu |
nucl-th/9406007 | Single-Particle Nondegeneracy and SU(3) Fermion Dynamical Symmetry | It is shown that the SU(3) symmetry of the fermion dynamical symmetry model
is essentially preserved even for highly nondegenerate spherical
single-particle energies. The breaking of SU(3) symmetry by single-particle
energy terms for either normal deformation or superdeformation occurs only
through an indirect Pauli ef... | 1994-06-07 | 2008-11-26 | [
"nucl-th"
] | Cheng-Li Wu, Da Hsuan Feng, Mike W. Guidry, Hsi-Tseng Chen, and
Xing-Wang Pan |
nucl-th/9406006 | Orbital and Spin Magnetic Dipole Strength in a shell model calculation
with $\Delta N$=$2$ excitations: $^8\mbox{Be}$ | The magnetic dipole strength and energy-weighted strength distribution is
calculated in $^8\mbox{Be}$, as well as the separate orbit and spin parts. All
$\Delta N$=$2$ excitations over and above (and including) the configuration
$0s^4$$0p^4$ are included. The interaction has a central, two-body spin-orbit
and a tensor ... | 1994-06-07 | 2009-10-28 | [
"nucl-th"
] | M.S. Fayache and L. Zamick |
nucl-th/9406005 | Color transparency after the NE18 and E665 experiments: Outllok and
perspectives at CEBAF | CEBAF is a high-luminocity factory of virtual photons with variable
virtuality $Q^{2}$ and transverse size. This makes CEBAF, in particular after
the energy upgrade to (8-12)GeV, an ideal facility for uncovering new
phenomena, and opening new windows, at the interface of the perturbative and
nonperturbative QCD. We dis... | 1994-06-06 | 2009-09-25 | [
"nucl-th",
"hep-ph"
] | J.Nemchik, N.N.Nikolaev and B.G.Zakharov |
nucl-th/9406004 | Truncation Method for the Shell Model Calculation | A method of truncating the large shell model basis is outlined. It relies on
the order given by the unperturbed energies of the basis states and on the
constancy of their spreading widths. Both quantities can be calculated by a
simple averaging procedure. The method is tested in the sd shell where the JT
dimensions are... | 1994-06-02 | 2009-09-25 | [
"nucl-th"
] | Mihai Horoi, B. Alex Brown and Vladimir Zelevinsky |
nucl-th/9406003 | Neutrino Oscillations in Noisy Media | We develop the Redfield equation for delta-correlated gaussian noise and
apply it to the case of two neutrino flavor or spin precession in the presence
of a noisy matter density or magnetic field, respectively. The criteria under
which physical fluctuations can be well approximated by the delta-correlated
gaussian nois... | 1994-06-02 | 2009-12-30 | [
"nucl-th",
"astro-ph",
"hep-ph"
] | F. N. Loreti and A. B. Balantekin |
nucl-th/9406002 | Gamow-Teller Strength in the Region of $^{100}$Sn | New calculations are presented for Gamow-Teller beta decay of nuclei near
$^{100}$Sn. Essentially all of the $^{100}$Sn Gamow-Teller decay strength is
predicted to go to a single state at an excitation energy of 1.8 MeV in
$^{100}$In. The first calculations are presented for the decays of neighboring
odd-even and odd-o... | 1994-06-01 | 2009-09-25 | [
"nucl-th"
] | B. Alex Brown and K. Rykaczewski |
nucl-th/9406001 | Nucleon Properties from Unconventional Interpolating Fields | Interpolating fields, used to excite hadrons from the QCD vacuum in
nonperturbative field-theoretic investigations of hadron properties, are
explored with an emphasis on unconventional nucleon interpolators. The QCD
continuum model for excited state contributions to QCD correlation functions is
a central element in ext... | 1994-06-01 | 2009-10-28 | [
"nucl-th",
"hep-lat",
"hep-ph"
] | Derek B. Leinweber |
nucl-th/9405029 | Photon absorption on a neutron-proton pair in $^3$He | The cross section of the reaction $^3$He$(\gamma,pn)p_{spec}$ in the energy
range 150 - 450 MeV has been calculated in a quasifree two-body model and
compared with a recent kinematically complete experiment. In comparison with
free deuteron disintegration the cross section is increased by a factor of
about 1.5 in reaso... | 1994-05-31 | 2009-10-28 | [
"nucl-th"
] | P. Wilhelm, J.A. Niskanen and H. Arenh\"ovel |
nucl-th/9405031 | Quenching of spin operators in the calculation of radiative corrections
for nuclear beta decay | Calculations of the axial-vector component to the radiative correction for
superallowed Fermi $0^+ \rightarrow 0^+$ nuclear beta decay are here modified
with quenched rather than free-nucleon coupling constants for the axial-vector
and electromagnetic interactions with nucleons. The result increases the
deduced value o... | 1994-05-31 | 2010-11-01 | [
"nucl-th"
] | I. S. Towner |
nucl-th/9405030 | Muon capture, continuum random phase approximation and in-medium
renormalization of the axial-vector coupling constant | We use the continuum random phase approximation to describe the muon capture
on C-12, O-16 and Ca-40. We reproduce the experimental total capture rates on
these nuclei to better than 10% using the free nucleon weak form factors and
two different residual interactions. However, the calculated rates for the same
residual... | 1994-05-31 | 2009-09-25 | [
"nucl-th"
] | E. Kolbe, K. Langanke, and P. Vogel |
nucl-th/9405028 | Chaos and Order in the Shell Model Eigenvectors | The energies and wave functions of stationary many-body states are analyzed
to look for the signatures of quantum chaos. Shell model calculations with the
Wildenthal interaction are performed in the $J-T$ scheme for 12 particles in
the $sd$-shell. The local level statistics are in perfect agreement with the
GOE predict... | 1994-05-30 | 2009-09-25 | [
"nucl-th"
] | Vladimir Zelevinsky, Mihai Horoi and B. Alex Brown |
nucl-th/9405027 | Toward a Consistent Description of the PNC Experiments in A=18-21 Nuclei | The experimental PNC results in $^{18}$F, $^{19}$F, $^{21}$Ne and the current
theoretical analysis show a discrepancy . If one interprets the small limit of
the experimentally extracted PNC matrix element for $^{21}$Ne as a destructive
interference between the isoscalar and the isovector contribution, then it is
diffic... | 1994-05-24 | 2009-10-28 | [
"nucl-th"
] | Mihai Horoi and B. Alex Brown |
nucl-th/9405025 | Anomalous A-dependence of diffractive leptoproduction of radial
excitation $\rho'(2S)$ | We predict a strikingly different $A$ and $Q^{2}$ dependence of quasielastic
leptoproduction of the $\rho^{0}(1S)$-meson and its radial excitation $\rho
'(2S)$ on nuclei. Whereas for the $\rho^{0}$ production nuclear transparency
$T_{A}$ decreases monotonically with $A$, for the $\rho'$ nuclear transparency
$T_{A}$ can... | 1994-05-23 | 2009-10-28 | [
"nucl-th",
"hep-ph"
] | J.Nemchik, N.N.Nikolaev and B.G.Zakharov |
nucl-th/9405026 | Hermitian boson mapping and finite truncation | Starting from a general, microscopic fermion-to-boson mapping that preserves
Hermitian conjugation, we discuss truncations of the boson Fock space basis. We
give conditions under which the exact boson images of finite fermion operators
are also finite (e.g., a 1+2-body fermion Hamiltonian is mapped to a 1+2-body
boson ... | 1994-05-23 | 2008-11-26 | [
"nucl-th"
] | Calvin W. Johnson and Joseph N. Ginocchio |
nucl-th/9405023 | Comment on E2 Contribution to the 8B ---> p + 7Be Coulomb Dissociation
Cross Section [K. Langanke and T.D. Shoppa, Phys. Rev. C49(1994)R1771,
ER(1994)] | The E2 cross section calculated by Langanke and Shoppa for the Riken
experiment on the Coulomb Dissociation of 8B uses E2 nuclear matrix elements
from one specific model. Other nuclear models predict a considerably smaller E2
cross section (by a pproximately a factor of 3 to 4), and Langanke and Shoppa
appear to assume... | 1994-05-21 | 2008-11-26 | [
"nucl-th"
] | Moshe Gai (Yale University) and Carlos Bertulani |
nucl-th/9405024 | Two-Meson and Multi-Pion Final States from 600 Gev Pion Interactions | This report describes the transitions pion -> meson_1 + meson_2 and also pion
-> multi-pion for high energy pions interacting with target nuclei (Z,A). The
physics interests are: A) Nuclear inelastic coherent diffraction cross sections
for pions, for studies of size fluctuations in the pion wave function. B)
Radiative ... | 1994-05-20 | 2016-09-08 | [
"nucl-th",
"hep-ph"
] | Murray A. Moinester |
nucl-th/9405022 | Cold Kaons from Hot Fireballs | The E814-collaboration has found a component of very low $m_t$ $K^+$ mesons
with a slope parameter of $T \sim 15 \, \rm MeV$. We will present a scenario
which explains the observed slope parameter and which allows us to predict the
expected slope parameter for kaons produced in heavier systems such as Au+Au.
Implicatio... | 1994-05-20 | 2009-10-28 | [
"nucl-th",
"hep-ph"
] | Volker Koch |
nucl-th/9405021 | Boson-fermion Dyson mapping and supersymmetry in fermion systems | We demonstrate that exact supersymmetry can emerge in a purely fermionic
system. This "supersymmetry without bosons" is unveiled by constructing a novel
boson-fermion Dyson mapping from a fermion space to a space comprised of
collective bosons and ideal fermions. In a nuclear structure context the
collective spectra of... | 1994-05-19 | 2009-09-25 | [
"nucl-th",
"hep-th"
] | P Navratil, H B Geyer and J Dobaczewski |
nucl-th/9405020 | Laboratory Mesurements in Nuclear Astrophysics | After reviewing some of the basic concepts, nomenclatures and
parametrizations of Astronomy, Astrophysics and Cosmology, we introduce a few
central problems in Nuclear Astrophysics, including the hot-CNO cycle, helium
burning in massive stars, and solar neutrino's. We demonstarte that SECONDARY
(RADIOACTIVE) NUCLEAR BE... | 1994-05-18 | 2007-05-23 | [
"nucl-th"
] | Moshe Gai (Yale University) |
nucl-th/9405019 | Model for asymptotic $D$-state parameters of light nuclei: Application
to $^4He$ | A simple method for calculating the asymptotic $D$ state observables for
light nuclei is suggested. The method exploits the dominant clusters of the
light nuclei. The method is applied to calculate the $^4He$ asymptotic $D$ to
$S$ normalization ratio $\rho^\alpha$ and the closely related $D$ state
parameter $D_2^\alpha... | 1994-05-17 | 2009-09-25 | [
"nucl-th"
] | Sadhan K. Adhikari, T. Frederico, I. D. Goldman, and S. S. Sharma |
nucl-th/9405017 | Collective Flow from the Intranuclear Cascade Model | The phenomenon of collective flow in relativistic heavy ion collisions is
studied using the hadronic cascade model ARC. Direct comparison is made to data
gathered at the Bevalac, for Au+Au at $p=1-2$ GeV/c. In contrast to the
standard lore about the cascade model, collective flow is well described
quantitatively withou... | 1994-05-17 | 2009-10-28 | [
"nucl-th"
] | David E. Kahana, Declan Keane, Yang Pang, Tom Schlagel and Shan Wang |
nucl-th/9405018 | Large-space shell-model calculations for light nuclei | An effective two-body interaction is constructed from a new Reid-like $NN$
potential for a large no-core space consisting of six major shells and is used
to generate the shell-model properties for light nuclei from $A$=2 to 6. (For
practical reasons, the model space is partially truncated for $A$=6.) Binding
energies a... | 1994-05-17 | 2008-11-26 | [
"nucl-th"
] | D. C. Zheng, J. P. Vary, and B. R. Barrett |
nucl-th/9405016 | Nuclear Magnetic Quadrupole Moments in Single Particle Approximation | A static magnetic quadrupole moment of a nucleus, induced by T- and P-odd
nucleon-nucleon interaction, is investigated in the single-particle
approximation. Models are considered allowing for analytical solution. The
problem is also treated numerically in a Woods-Saxon potential with spin-orbit
interaction. The stabili... | 1994-05-15 | 2009-09-25 | [
"nucl-th"
] | V. F. Dmitriev, I.B. Khriplovich and V.B. Telitsin (Budker Institute
of Nuclear Physics) |
nucl-th/9405013 | Molecular dynamics approach: from chaotic to statistical properties of
compound nuclei | Statistical aspects of the dynamics of chaotic scattering in the classical
model of $\alpha$-cluster nuclei are studied. It is found that the dynamics
governed by hyperbolic instabilities which results in an exponential decay of
the survival probability evolves to a limiting energy distribution whose
density develops t... | 1994-05-13 | 2009-09-25 | [
"nucl-th"
] | S. Dro\.zd\.z, J. Oko{\l}owicz, T. Srokowski and A. Budzanowski |
nucl-th/9405014 | Hard Constituent Quarks and Electroweak Properties of Pseudoscalar
Mesons | The high momentum components generated in the wave function of pseudoscalar
mes* by the one-gluon-exchange interaction are investigated within a
relativistic constituent quark model. Adopting the light-cone formalism, the
sensitivity of the weak decay constant and the charge form factor to hard
constituent quarks is il... | 1994-05-13 | 2016-08-14 | [
"nucl-th",
"hep-ph"
] | F. Cardarelli, I.L. Grach, I.M. Narodetskii E. Pace, G. Salm\`e, S.
Simula |
nucl-th/9405015 | Large Angle K+-Deuteron Scattering as a Probe for Meson Exchange Effects | Meson exchange contributions have been suggested as one class of medium
effects which might explain the continuing discrepancy between experimental
results and theoretical predictions for K+-nucleus scattering. These exchange
effects are negligible for near-forward K+-deuteron scattering because of the
large size of th... | 1994-05-13 | 2009-09-25 | [
"nucl-th"
] | David R. Harrington |
nucl-th/9405012 | Many-Body Currents and the Strange-Quark Content of 4he | Meson-exchange current (MEC) contributions to the parity-violating (PV)
asymmetry for elastic scattering of polarized electrons from $^4$He are
calculated over a range of momentum transfer using Monte Carlo methods and a
variational $^4$He ground state wavefunction. The results indicate that MEC's
generate a negligible... | 1994-05-11 | 2009-09-25 | [
"nucl-th",
"hep-ph"
] | M.J. Musolf, R. Schiavilla, and T.W. Donnelly |
nucl-th/9405011 | Generator Coordinate Calculations for the Breathing-Mode Giant Monopole
Resonance in Relativistic Mean Field Theory | The breathing-mode giant monopole resonance (GMR) is studied within the
framework of the relativistic mean-field theory using the Generator Coordinate
Method (GCM). The constrained incompressibility and the excitation energy of
isoscalar giant monopole states are obtained for finite nuclei with various
sets of Lagrangi... | 1994-05-11 | 2009-09-25 | [
"nucl-th"
] | M.V. STOITSOV, P. RING and M.M. SHARMA (Physics Department, Technical
University Munich, and Max Planck Institute of Astrophysik, Garching,
Germany) |
nucl-th/9405010 | Comment on "No-core calculations" of the spectra of light nuclei | We comment upon a recent work by Zheng, Barrett, Jaqua, Vary and McCarthy,
concerning calculations of spectra of light nuclei with no core. It is
demonstrated that the omission of particle-particle ladder diagrams in their
calculations, explains the large differences between results obtained with
various model spaces. | 1994-05-10 | 2009-09-25 | [
"nucl-th"
] | T. Engeland, M. Hjorth-Jensen, A. Holt and E. Osnes |
nucl-th/9405009 | The Nolen-Schiffer anomaly and isospin symmetry breaking in nuclear
matter | The quark-meson coupling model which we have developed previously is extended
to incorporate the $\delta$ meson. It is then used to study the Nolen-Schiffer
anomaly and isospin symmetry breaking in nuclear matter. We find that, in
combination with the {\it u-d\/} mass difference, the difference between quark
scalar den... | 1994-05-10 | 2010-02-17 | [
"nucl-th"
] | K. Saito and A. W. Thomas |
nucl-th/9405008 | The One-Boson-Exchange Potential Model Approach | A review is given of the present situation in YN scattering. Special
attention is given to the handling of SU(3) in the various meson exchanges. The
importance of the almost always ignored contribution of the Pomeron is
reiterated. | 1994-05-06 | 2007-05-23 | [
"nucl-th"
] | J.J. de Swart, P.M.M. Maessen and TH.A. Rijken (University of
Nijmegen) |
nucl-th/9405007 | Neutrino Capture Cross Sections for Ar-40 and beta-decay of Ti-40 | Shell-model calculations of solar neutrino absorption cross sections for
$^{40}$Ar, the proposed component of the ICARUS detector, are presented. It is
found that low-lying Gamow-Teller transitions lead to a significant enhancement
of the absorption rate over that expected from the Fermi transition between the
isobaric... | 1994-05-05 | 2009-10-28 | [
"nucl-th"
] | W.E. Ormand, P.M. Pizzochero, P.F. Bortignon, and R.A. Broglia |
nucl-th/9405005 | Thermal properties of Fe-54 | We study the thermal properties of Fe-54 with the Brown-Richter interaction
in the complete 1p0f model space. Monte Carlo calculations show a peak in the
heat capacity and rapid increases in both the moment of inertia and M1 strength
near a temperature of 1.1 MeV that are associated with the vanishing of
proton-proton ... | 1994-05-04 | 2009-09-25 | [
"nucl-th"
] | D.J. Dean, S.E. Koonin, K. Langanke, P.B. Radha and Y. Alhassid |
nucl-th/9405006 | Momentum--dependent nuclear mean fields and collective flow in heavy ion
collisions | We use the Boltzmann-Uehling-Uhlenbeck model to simulate the dynamical
evolution of heavy ion collisions and to compare the effects of two
parametrizations of the momentum--dependent nuclear mean field that have
identical properties in cold nuclear matter. We compare with recent data on
nuclear flow, as characterized b... | 1994-05-04 | 2009-09-25 | [
"nucl-th"
] | Jianming Zhang, Subal Das Gupta, and Charles Gale |
nucl-th/9405004 | Escape and Spreading Properties of Charge-Exchange Resonances in Bi 208 | The properties of charge-exchange excitations of ${}^ {208}$Pb with $\Delta L
= 0$, i.e., the isobaric analog and Gamow-Teller resonances, are studied within
a self-consistent model making use of an effective force of the Skyrme type.
The well-known isobaric analog case is used to assess the reliability of the
model. T... | 1994-05-04 | 2009-09-25 | [
"nucl-th"
] | G. Colo`, N. Van Giai, P.F. Bortignon, R.A. Broglia |
nucl-th/9405003 | Probing Short Range Nucleon Correlations in High Energy Hard
Quasielastic pd Reactions | We show that the strong dependence of the amplitude for $NN$ hard scattering
on the collision energy can be used to magnify the effects of short range
nucleon correlations in quasielastic $pd$ scattering. Under specific
kinematical conditions the effect of initial and final state interactions can
be accounted for by re... | 1994-05-03 | 2009-09-25 | [
"nucl-th"
] | L. Frankfurt, E. Piasetsky, M. Sargsyan, M. Strikman |
nucl-th/9405002 | Testing QCD Sum Rule Techniques on the Lattice | Results for the first test of the ``crude'' QCD continuum model, commonly
used in QCD Sum Rule analyses, are presented for baryon correlation functions.
The QCD continuum model is found to effectively account for excited state
contributions to the short-time regime of two-point correlation functions and
allows the isol... | 1994-05-03 | 2009-10-28 | [
"nucl-th",
"hep-lat",
"hep-ph"
] | Derek B. Leinweber |
nucl-th/9405001 | Charm Production at RHIC to O(\ALPHA_S^3) | We present results on rapidity and transverse momentum distributions of
inclusive charm quark production in heavy-ion collisions at RHIC, including the
next-to-leading order, $O(\alpha_s^3)$, radiative corrections and the nuclear
shadowing effect. We find the effective, nuclear K-factor to be $K(y)\approx
1.4$ for $\mi... | 1994-05-02 | 2009-10-28 | [
"nucl-th",
"hep-ph"
] | I. Sarcevic and P. Valerio |
nucl-th/9404030 | Near-threshold $K^{+}$ Production in Heavy-ion Collisions | Within a hadronic transport model we study in detail contributions to kaon
yields and momentum spectra from various baryon (resonance)-baryon (resonance)
and $\pi N$ interactions in heavy-ion collisions at beam energies near the
free-space kaon production threshold. It is found that the finite lifetime of
baryon resona... | 1994-04-30 | 2008-11-26 | [
"nucl-th"
] | Bao-An Li |
nucl-th/9404028 | Effects of N$^{*}$(1440) resonance on subthreshold kaon, antikaon and
antiproton production | We study the effects of $N^{*}(1440)$ resonance on the production of kaons,
antikaons and antiprotons in heavy-ion collisions at subthreshold energies.
Using free-space widths for the $\Delta(1232)$ and the $N^{*}(1440)$ resonance
and free-space thresholds for particle production, it is found that the
$N^{*}$-baryon in... | 1994-04-30 | 2007-05-23 | [
"nucl-th"
] | Bao-An Li, Che Ming Ko and Guoqiang Li |
nucl-th/9404029 | Freeze-out Configuration in Multifragmentation | The excitation energy and the nuclear density at the time of breakup are
extracted for the $\alpha + ^{197}Au$ reaction at beam energies of 1 and 3.6
GeV/nucleon. These quantities are calculated from the average relative velocity
of intermediate mass fragments (IMF) at large correlation angles as a function
of the mult... | 1994-04-30 | 2009-10-28 | [
"nucl-th"
] | Bao-An Li, Dieter H. Gross, Volker Lips and Helmut Oeschler |
nucl-th/9404026 | N-Body Theory Revisited and its Extension to the pinnn-NNN Problem^* | In order to approach the pion--multinucleon problem, we have found it
convenient to reformulate the general N--body theory starting from the fully
unclusterized (i.e., N <- N) amplitude. If we rewrite such an amplitude in
terms of new unknowns which can be later identified as the amplitudes for all
the (N-1) <- (N-1) c... | 1994-04-29 | 2009-10-28 | [
"nucl-th"
] | G. Cattapan and L. Canton |
nucl-th/9404027 | Bose-Enhancement and Pauli-Blocking Effects in Transport Models | The ability of semi-classical transport models to correctly simulate Pauli
blocking and Bose enhancement is discussed. In the context of simple quantum
mechanical systems, it is shown that using $(1 \pm f)$ enhancements is
inadequate to describe systems far from equilibrium. The relaxation of $(1 +
f)$ descriptions tow... | 1994-04-29 | 2009-10-28 | [
"nucl-th"
] | Scott Pratt and Wolfgang Bauer |
nucl-th/9404025 | Classical Lagrangian Model of the Pauli Principle | A classical Lagrangian model of the Pauli potential is introduced. It is
shown that the kinematic kinetic energy ($\sum \frac{1}{2} m v^2$) in the model
approximately reproduces the energy of a free Fermi gas at low temperatures and
at densities relevant in nuclear collisions with moderate beam energies.
Differences be... | 1994-04-28 | 2009-10-28 | [
"nucl-th"
] | John J. Neumann and George Fai |
nucl-th/9404024 | Two-body Pion Absorption on $^3He$ at Threshold | It is shown that a satisfactory explanation of the ratio of the rates of the
reactions $^3He(\pi^-,nn)$ and $^3He(\pi^-,np)$ for stopped pions is obtained
once the effect of the short range two-nucleon components of the axial charge
operator for the nuclear system is taken into account. By employing realistic
models fo... | 1994-04-28 | 2009-09-25 | [
"nucl-th"
] | L. L. Kiang, T.-S. H. Lee, D. O. Riska |
nucl-th/9404023 | Two-Loop Calculations with Vertex Corrections in the Walecka Model | Two-loop corrections with scalar and vector form factors are calculated for
nuclear matter in the Walecka model. The on-shell form factors are derived from
vertex corrections within the framework of the model and are highly damped at
large spacelike momenta. The two-loop corrections are evaluated first by using
the one... | 1994-04-25 | 2009-09-25 | [
"nucl-th"
] | Brian D. Serot and Huabin Tang |
nucl-th/9404022 | Direct mechanism in solar nuclear reactions | A short overview of the direct reaction mechanism and the models used for the
analysis of such processes is given. Nuclear reactions proceeding through the
direct mechanism and involved in solar hydrogen burning are discussed. The
significance of these nuclear reactions with respect to the solar neutrino
problem is inv... | 1994-04-22 | 2007-05-23 | [
"nucl-th"
] | H. Oberhummer and G. Staudt |
nucl-th/9404021 | Systematics of $\alpha$--nucleus optical potentials | Double--folded optical $\alpha$--nucleus potentials can be used to calculate
elastic scattering cross sections in a wide mass-- and energy region. Because
of the systematic behavior of the potential parameters we are able to obtain
reliable optical potentials for astrophysically relevant reactions even without
scatteri... | 1994-04-19 | 2009-09-25 | [
"nucl-th"
] | P. Mohr, H. Abele, U. Atzrott, G. Staudt, R. Bieber, K. Gr\"un, H.
Oberhummer, T. Rauscher, E. Somorjai |
nucl-th/9404020 | Vibrations versus collisions and the iterative structure of two-body
dynamics | We adopt a truncated version of two-body dynamics by neglecting three-body
correlations, as is supported by microscopic numerical calculations.
Introducing orthogonal channel correlations for the pp- and the ph-channel and
integrating the latter in terms of vibrational RPA-states we derive a retarded
two-body equation.... | 1994-04-18 | 2009-10-28 | [
"nucl-th"
] | Alfred Pfitzner, Wolfgang Cassing, and Andreas Peter |
nucl-th/9404019 | Microscopic mass formulae | By assuming the existence of a pseudopotential smooth enough to do
Hartree-Fock variations and good enough to describe nuclear structure, we
construct mass formulae that rely on general scaling arguments and on a
schematic reading of shell model calculations. Fits to 1751 known binding
energies for N,Z$\geq 8$ lead to ... | 1994-04-18 | 2008-11-26 | [
"nucl-th"
] | J. Duflo and A.P. Zuker |
nucl-th/9404018 | Varied Signature Splitting Phenomena in Odd Proton Nuclei | Varied signature splitting phenomena in odd proton rare earth nuclei are
investigated. Signature splitting as functions of $K$ and $j$ in the angular
momentum projection theory is explicitly shown and compared with those of the
particle rotor model. The observed deviations from these rules are due to the
band mixings. ... | 1994-04-17 | 2009-09-25 | [
"nucl-th"
] | Yang Sun, Da Hsuan Feng and Shuxian Wen |
nucl-th/9404017 | pi-NN Coupling Constants from NN Elastic Data between 210 and 800 Mev | High partial waves for $pp$ and $np$ elastic scattering are examined
critically from 210 to 800 MeV. Non-OPE contributions are compared with
predictions from theory. There are some discrepancies, but sufficient agreement
that values of the $\pi NN$ coupling constants $g_0^2$ for $\pi ^0$ exchange
and $g^2_{c}$ for char... | 1994-04-16 | 2009-09-25 | [
"nucl-th"
] | D.V. Bugg (Queen Mary College) and R. Machleidt (U. of Idaho) |
nucl-th/9404016 | From Regular to Chaotic States in Atomic Nuclei | An interesting aspect of nuclear dynamics is the co--existence, in atomic
nuclei, of regular and chaotic states. In the first part of the present work,
we review the state of the art of nuclear dynamics and use a schematic shell
model to show how a very simple and schematic nucleon--nucleon interaction can
produce an o... | 1994-04-14 | 2015-06-26 | [
"nucl-th"
] | M.T. Lopez--Arias, V.R. Manfredi and L. Salasnich |
nucl-th/9404015 | Nuclear Matrix Elements of Axial-Charge Exchange Currents Derived in
Heavy-Fermion Chiral Perturbation Theory | We calculate shell-model matrix elements of the axial-charge exchange current
operators that have been obtained up to the next-to-leading order from
heavy-fermion chiral perturbation theory. It is found that loop corrections to
the soft one-pion-exchange contribution are small (around 10 \%) and have no
significant dep... | 1994-04-13 | 2009-10-28 | [
"nucl-th",
"hep-ph"
] | Tae-Sun Park, Ian S. Towner and Kuniharu Kubodera |
nucl-th/9404014 | Critical Enhancement of the In-medium Nucleon-Nucleon Cross Section at
low Temperatures | The in-medium nucleon-nucleon cross section is calculated starting from the
thermodynamic T-matrix at finite temperatures. The corresponding
Bethe-Salpeter-equation is solved using a separable representation of the Paris
nucleon-nucleon-potential. The energy-dependent in-medium N-N cross section at
a given density show... | 1994-04-12 | 2009-09-25 | [
"nucl-th"
] | T. Alm(1), G. Roepke(1) and M. Schmidt(2) ((1)Arbeitsgruppe der
Max-Planck-Gesellschaft ``Theoretische Vielteilchenphysik ``an der
Universitaet Rostock Germany;(2)Institut fuer Ostseeforschung
Rostock-Warnemuende Germany) |
nucl-th/9404013 | The $\eta$NN Coupling in Eta Photoproduction | Low-energy eta photoproduction on the nucleon is studied in an effective
Lagrangian approach that contains Born terms, vector meson and nucleon
resonance contributions. The resonance sector includes the $S_{11}(1535)$,
$P_{11}(1440)$ and $D_{13}(1520)$ states whose couplings are fixed by
independent electromagnetic and... | 1994-04-12 | 2009-10-28 | [
"nucl-th"
] | L. Tiator, C. Bennhold and S.S. Kamalov |
nucl-th/9404011 | SDG fermion-pair algebraic SO(12) and Sp(10) models and their boson
realizations | It is shown how the boson mapping formalism may be applied as a useful
many-body tool to solve a fermion problem. This is done in the context of
generalized Ginocchio models for which we introduce S-, D-, and G-pairs of
fermions and subsequently construct the sdg-boson realizations of the
generalized Dyson type. The co... | 1994-04-12 | 2015-06-26 | [
"nucl-th"
] | P. Navratil, H.B. Geyer, J. Dobes, and J. Dobaczewski |
nucl-th/9404010 | Direct Capture at Low Energies | The importance of direct capture for (n,$\gamma$)--reactions on
intermediate-- and heavy--mass target nuclei occuring in the s-- and r--process
is investigated. It is shown that the direct mechanism is non--negligible for
magic and neutron rich target nuclei. For some double magic and neutron rich
nuclei in the r--proc... | 1994-04-11 | 2009-09-25 | [
"nucl-th"
] | W. Balogh, R. Bieber, H. Oberhummer, T. Rauscher, K.-L. Kratz, P.
Mohr, G. Staudt, M.M. Sharma |
nucl-th/9404012 | A Large Solid Angle Study of Pion Absorption on He3 | Measurements have been made of pi+ absorption on He3 at T_pi+ = 118, 162, and
239 MeV using the Large Acceptance Detector System (LADS). The nearly 4pi solid
angle coverage of this detector minimizes uncertainties associated with
extrapolations over unmeasured regions of phase space. The total absorption
cross section ... | 1994-04-11 | 2019-08-17 | [
"nucl-th"
] | LADS collaboration, T.Alteholz, D.Androic, G.Backenstoss, D.Bosnar,
H.Breuer, A.Brkovic, H.Dobbeling, T. Dooling, W.Fong, M.Furic, P.A.M.Gram,
N.K.Gregory, J.P.Haas, A.Hoffart, C.H.Q.Ingram, A.Klein, K.Koch, J.Kohler,
B.Kotlinski, M.Kroedel, G.Kyle, A.Lehmann, Z.N.Lin, G.Mahl, A.O.Mateos,
K.Michaelian, S.Mukhop... |
nucl-th/9404009 | Spin Force Dependence Of Nucleon Structure Functions | Deep inelastic structure functions for the nucleon are obtained in a
constituent quark model on the light cone. In the Bjorken limit the parton
model is derived. Structure functions from the hadronic tensor at the scale
$\mu \sim 0.25$ GeV are evolved from (0.6 GeV$)^{2}$ to $-q^{2}\sim 15$
GeV$^{2}$. The model incorpo... | 1994-04-08 | 2009-09-25 | [
"nucl-th"
] | H.J. Weber (Institute for Nuclear and Particle Physics, University of
Virginia) |
nucl-th/9404008 | Response Function of Hot Nuclear Matter | We investigate the response function of hot nuclear matter to a small
isovector external field using a simplified Skyrme interaction reproducing the
value of the symmetry energy coefficient.
We consider values of the momentum transfer corresponding to the dipole
oscillation in heavy nuclei. We find that while at zero... | 1994-04-07 | 2009-10-28 | [
"nucl-th"
] | F. L. Braghin and D. Vautherin |
nucl-th/9404007 | On the mean free paths of pions and kaons in hot hadronic matter | Pion and kaon mean free paths within a thermal hadronic background are
calculated using relativistic kinetic theory. Free cross sections are used
which include contributions from $\rho$, $K^{*}$, $\Delta$ and heavier
resonances. Given pion to baryon ratios appropriate for the breakup stage of a
$200\cdot A$GeV relativi... | 1994-04-06 | 2010-11-01 | [
"nucl-th"
] | Kevin Haglin and Scott Pratt |
nucl-th/9404006 | Full determination of transition matrix elements in the $\vec{d}
(\vec{p},pp)n$ reaction | It is shown that in the $d(p,pp)n$ reaction with a colinear geometry and the
two outgoing protons in a singlet state, the only two independent T-matrix
elements can be determined from spin correlation experiments. These matrix
elements are strongly dependent on the deuteron helicity amplitudes, which are
expected to va... | 1994-04-06 | 2011-07-19 | [
"nucl-th"
] | F.D.Santos and A.Arriaga |
nucl-th/9404001 | Nijmegen Soft-Core Potential Including Two-Meson Exchange | We report on the progress of the construction of the extended soft-core (ESC)
Nijmegen potential. Next to the standard one-boson-exchange parts, the model
includes the pion-meson-exchange potentials due to the parallel and crossed-box
diagrams, as well as the one-pair and two-pair diagrams, vertices for which can
be id... | 1994-04-05 | 2015-06-26 | [
"nucl-th"
] | V.G.J. Stoks and Th.A. Rijken |
nucl-th/9404004 | A Revisit of SO(6) Dynamical Symmetry in Nuclear Structure | According to the analysis based on the fermion dynamical symmetry model,
nuclei previously regarded as SO(6)-like (e.g. $^{128}$Xe and $^{196}$Pt) are
shown to be more akin to the transitional nuclei between SO(7) and SO(6)
symmetries. | 1994-04-05 | 2015-06-26 | [
"nucl-th"
] | Xing-Wang Pan and Da Hsuan Feng |
nucl-th/9404003 | Theory of parity violation in compound nuclear states; one particle
aspects | In this work we formulate the reaction theory of parity violation in compound
nuclear states using Feshbach's projection operator formalism. We derive in
this framework a complete set of terms that contribute to the longitudinal
asymmetry measured in experiments with polarized epithermal neutrons. We also
discuss the p... | 1994-04-05 | 2009-09-25 | [
"nucl-th"
] | N. Auerbach and V. Spevak |
nucl-th/9404002 | Pairing correlation in nuclear matter from Skyrme force | The properties of pairing correlation in nuclear matter are investigated by
using various versions of Skyrme forces. Truncation of states involving pairing
correlation, necessary due to zero range nature of the Skyrme force, is
discussed in detail. A plateau appears in pairing gap versus cutoff for each
force. We propo... | 1994-04-05 | 2009-10-28 | [
"nucl-th"
] | S. Takahara, N. Onishi and N. Tajima |
nucl-th/9404005 | On the $M_T$ scaling of dilepton spectra in high energy heavy ion
collisions | The so-called $M_T$ scaling for dilepton spectra at RHIC energies is
examined. It is seen that a proper accounting of the complete set of dilepton
producing processes forces us to abandon the proposed scaling around $M_T$ =
2.6 GeV, which has been put forward as a possible signature of the presence of
quark-matter. Any... | 1994-04-05 | 2010-01-15 | [
"nucl-th",
"hep-ph"
] | D.K. Srivastava, Jicai Pan, V. Emel'yanov, and C. Gale |
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