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 |
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hep-ph/9408233 | Electromagnetic Pion Form Factor and Neutral Pion Decay Width | The electromagnetic pion form factor, $F_\pi(q^2)$, is calculated for
spacelike-$q^2$ in impulse approximation using a confining quark propagator,
$S$, and a dressed quark-photon vertex, $\Gamma_\mu$, obtained from realistic,
nonperturbative Dyson-Schwinger equation studies. Good agreement with the
available data is ob... | 1994-08-04 | 2010-03-04 | [
"hep-ph",
"nucl-th"
] | Craig D. Roberts |
hep-ph/9408236 | Constraints on the Fiite-Density Spectral Densities of Vector Channel | Sum rules for the variation of finite-density spectral density of vector
channel with baryon density are derived based on dispersion relations and the
operator product expansion. These sum rules may serve as constraints on the
phenomenological models for the finite-density spectral densities used in the
approaches moti... | 1994-08-04 | 2009-09-25 | [
"hep-ph"
] | Xuemin Jin |
hep-ph/9408234 | Testing the Vacuum Oscillation and the MSW Solutions of the Solar
Neutrino Problem | Solar model independent tests of the vacuum oscillation and MSW solutions of
the solar neutrino problem are considered. Detailed predictions for time
(seasonal) variations of the signals in the future solar neutrino detectors
(SNO, Super Kamiokande, BOREXINO, HELLAZ), if solar neutrinos take part in
vacuum oscillations... | 1994-08-04 | 2009-09-25 | [
"hep-ph"
] | P.I.Krastev and S.T.Petcov |
hep-ph/9408231 | The hadronic vacuum polarization contribution to the muon g-2 in the
quark-resonance model | The hadronic vacuum polarization contribution to the anomalous magnetic
moment of the muon is parametrized by using the quark-resonance model
formulated in \cite{QR}. In this context a recent prediction obtained within
the ENJL model \cite{RAF} can be affected by two additional contributions: the
next to leading correc... | 1994-08-04 | 2009-10-28 | [
"hep-ph"
] | E. Pallante |
hep-ph/9408235 | Open Questions in Charm Decays Deserving an Answer | A list is given of those open questions concerning the dynamics of charm
decays where there exists a strong need for an answer. Such a need is based on
lessons to be learnt about QCD -- either in their own right or for a better
understanding of $B$ physics -- or on searches for New Physics with a small
background from ... | 1994-08-04 | 2007-05-23 | [
"hep-ph"
] | I.I. Bigi |
hep-ph/9408223 | Chiral Symmetry Restoration and the Georgi Vector Limit | The chiral phase transition at high temperature and/or density is interpreted
in terms of Georgi's vector limit. We discuss three cases as possible support
for this scenario: Quark-number susceptibility, cool kaons in heavy-ion process
and an instanton-molecule picture for chiral restoration. Both the notion of
``mende... | 1994-08-03 | 2009-10-28 | [
"hep-ph",
"nucl-th"
] | G.E. Brown and Mannque Rho |
hep-ph/9408226 | Neutralino Event Rates In Dark Matter Detectors | The expected event rates for ${\tilde Z_{1}}$ dark matter for a variety of
dark matter detectors are studied over the full parameter space with tan
$\beta\leq$ 20 for supergravity grand unified models. Radiative breaking
constraints are implemented and effects of the heavy netural Higgs included as
well as loop correct... | 1994-08-03 | 2009-09-25 | [
"hep-ph"
] | R. Arnowitt and Pran Nath |
hep-ph/9408222 | Estimation of Power Corrections to Hadronic Event Shapes | Power corrections to hadronic event shapes are estimated using a recently
suggested relationship between perturbative and non-perturbative effects in
QCD. The infrared cutoff dependence of perturbative calculations is related to
non-perturbative contributions with the same dependence on the energy scale
$Q$. Correction... | 1994-08-03 | 2009-10-28 | [
"hep-ph"
] | B.R. Webber |
hep-ph/9408218 | $\epsilon_b$ Constraints on the Minimal $SU(5)$ and $SU(5)\times U(1)$
Supergravity Models | We have performed a systematic analysis to compute the one-loop electroweak
corrections to the Z->b b-bar vertex in terms of $\epsilon_b$ and $R_b$ in the
context of the minimal $SU(5)$ and no-scale $SU(5)\times U(1)$ supergravity
models. With the measured top mass, $m_t=174\pm 10^{+13}_{-12}$ $\GeV$ ,
recently announc... | 1994-08-03 | 2009-12-30 | [
"hep-ph"
] | Jihn E. Kim and Gye T. Park |
hep-ph/9408224 | Just so oscillations in supersymmetric standard model | We analyze the spectrum and mixing among neutrinos in the minimal
supersymmetric standard model with explicit breaking of R parity. It is shown
that ({\em i}) the mixing among neutrinos is naturally large and ({\em ii}) the
non zero neutrino mass is constrained to be $\leq 10^{-5}$ eV from arguments
based on baryogenes... | 1994-08-03 | 2009-10-28 | [
"hep-ph"
] | Anjan S. Joshipura and Marek Nowakowski |
hep-ph/9408219 | $K \to \pi\pi\gamma$ decays: a search for novel couplings in kaon decays | We analyze $K \to \pi\pi\gamma$ decays in the framework of Chiral
Perturbation Theory. We study the different Dalitz plot distributions, trying
to find regions where o($p^6$) contributions could be more easily detected. To
fulfill this program we compute all the the o($p^4$) loop and counterterm
contributions, finding ... | 1994-08-03 | 2009-10-28 | [
"hep-ph"
] | Giancarlo D'Ambrosio and Gino Isidori |
hep-ph/9408225 | Regularization in the Gauged Nambu--Jona-Lasinio Model | Various prescriptions employed for regulating gauged Nambu--Jona-Lasinio type
models such as the top-quark condensate model are discussed. The use of
dimensional regularization maintains gauge invariance but destroys the
quadratic divergence in the gap equation. If instead a simple ultraviolet
momentum cutoff is used t... | 1994-08-03 | 2009-10-28 | [
"hep-ph"
] | Tony Gherghetta |
hep-ph/9408227 | A Proposed Test of Charge Symmetry in $\Sigma$ Decay | The semi-leptonic decays of $\Sigma^\pm$ offer a vehicle for observing charge
symmetry-breaking. The effect is expected to be about 6\%, enhanced due to the
replacement of two u quarks by d quarks. We propose that present experimental
data be improved to search for this effect. | 1994-08-03 | 2009-10-28 | [
"hep-ph"
] | E.M. Henley and G.A. Miller |
hep-ph/9408220 | Weak Coupling Limit and Genuine QCD Predictions for Heavy Quarkonia | Although individual levels of toponium will be unobservable, the
top--anti--top system near threshold fulfills all requirements of a rigorous
perturbation theory in QCD for weakly bound systems. Corresponding techniques
from positronium may thus be transferred successfully to this case. After
clarifying the effect of a... | 1994-08-03 | 2007-05-23 | [
"hep-ph"
] | W.Kummer and W.Moedritsch |
hep-ph/9408221 | Gauge-Independent Bound-State Corrections to the Toponium Decay Width | Off-shell and relativistic bound-state corrections for the decay $t \to b+W$
are calculated to $O(\a_s^2)$ making full use of the Bethe-Salpeter formalism
for weakly bound systems. Thus we are able to take into account all terms to
that order in a systematic and straightforward manner. One of the previously
not conside... | 1994-08-03 | 2009-10-28 | [
"hep-ph"
] | W. Moedritsch and W.Kummer |
hep-ph/9408217 | Neutralino Mass Bounds in the Next-To-Minimal Supersymmetric Standard
Model | We analyze the experimental data from the search for new particles at LEP 100
and obtain mass bounds for the neutralinos of the Next--To--Minimal
Supersymmetric Standard Model (NMSSM). We find that for $\tan\beta \gsim 5.5$ a
massless neutralino is still possible, while the lower mass bound for the
second lightest neut... | 1994-08-02 | 2009-10-28 | [
"hep-ph"
] | F. Franke, H. Fraas and A. Bartl |
hep-ph/9408216 | Rigorous QCD-Potential for the $t\bar{t}$-System at Threshold | Recent evidence for the top mass in the region of 160 $GeV$ for the first
time provides an opportunity to use the full power of relativistic quantum
field theoretical methods, available also for weakly bound systems. Because of
the large decay width $\G$ of the top quark individual energy-levels in
"toponium" will be u... | 1994-08-02 | 2014-11-17 | [
"hep-ph"
] | W.Kummer and W.Moedritsch |
hep-ph/9408211 | Supersymmetry Breaking by Hidden Matter Condensation in Superstrings | We show that supersymmetry can be broken mainly by hidden matter condensates
in the observable matter direction in generic superstring models. This happens
only when the fields whose VEVs give masses to hidden matter do not decouple at
the condensation scale. We find how the parameters of the string model and the
vacuu... | 1994-08-02 | 2009-10-28 | [
"hep-ph",
"hep-th"
] | Edi Halyo |
hep-ph/9408215 | Critical Analysis of Theoretical Estimates for $B$ to Light Meson Form
Factors and the $B \to \psi K(K^{\ast})$ Data | We point out that current estimates of form factors fail to explain the
non-leptonic decays $B \to \psi K(K^{\ast})$ and that the combination of data
on the semi-leptonic decays $D \to K(K^{\ast})\ell \nu$ and on the non-leptonic
decays $B \to \psi K(K^{\ast})$ (in particular recent po\-la\-ri\-za\-tion
data) severely ... | 1994-08-02 | 2009-10-28 | [
"hep-ph"
] | R. Aleksan, A. Le Yaouanc, L. Oliver, O. P\`ene and J.-C. Raynal |
hep-ph/9408214 | Dissipation via Particle Production in Scalar Field Theories | The non-equilibrium dynamics of the first stage of the reheating process,
that is dissipation via particle production is studied in scalar field theories
in the unbroken and in the broken symmetry phase. We begin with a perturbative
study to one loop and show explicitly that the mechanism of dissipation via
particle pr... | 1994-08-02 | 2016-09-01 | [
"hep-ph",
"astro-ph",
"gr-qc"
] | D. Boyanovsky, H. J. de Vega, R. Holman, D.S-Lee and A. Singh |
hep-ph/9408210 | First-order Phase Transition in Three-dimensional QED with Chern--Simons
Term | We have studied the chiral phase transition in three-dimensional QED in the
presence of a Chern--Simons term for the gauge field. There exists a phase
where the chiral symmetry is broken dynamically and we have determined the
critical line for this symmetry breaking as a function of the effective
coupling and the stren... | 1994-08-02 | 2009-10-28 | [
"hep-ph",
"cond-mat",
"hep-lat",
"hep-th"
] | Kei-Ichi Kondo and Pieter Maris |
hep-ph/9408209 | Hadronic screening masses and the magnetic gluon condensate at high
temperature | The hadronic screening mass at high temperature ($T$) in QCD$_4$ is examined
on the basis of the QCD sum rules in (2+1) dimensions. Due to the magnetic
gluon condensate at high $T$ which is expected to be nonvanishing, the
screening mass deviates from the asymptotic value $2\pi T$. Also, the screening
mass in the vecto... | 1994-08-02 | 2009-10-28 | [
"hep-ph"
] | M.Ishii and T.Hatsuda |
hep-ph/9408212 | The QCD String with Quarks. II. Light Cone Hamiltonian | The light-cone Hamiltonian is derived from the general gauge -- and Lorentz
-- invariant expression for the $q\bar{q}$ Green's function, containing
confinement via the area law for the Wilson loop.The resulting Hamiltonian
contains in a nonadditive way contributions from quark and string degrees of
freedom. Different l... | 1994-08-02 | 2010-11-01 | [
"hep-ph"
] | A.Yu.Dubin, A.B.Kaidalov and Yu.A.Simonov |
hep-ph/9408205 | Probing the Photon Structure Function in Photoproduction | We show how the parton distributions in the photon can be accurately measured
in the photoproduction of large-pt jets at HERA. A short review is given of the
beyond Leading Logarithm formalism for the photon structure function, with a
discussion of the factorization scheme and of the non-perturbative input. | 1994-08-01 | 2009-09-25 | [
"hep-ph"
] | M.Fontannaz |
hep-ph/9408206 | Searching for $G^3$ in $t \tbar$ Production | The triple gluon field strength operator $G^3$ represents the only genuinely
gluonic CP conserving term which can appear at dimension-6 within an effective
strong interaction Lagrangian. Previous studies of this operator have revealed
that its effect on gluon scattering is surprisingly difficult to detect. In
this arti... | 1994-08-01 | 2009-10-28 | [
"hep-ph"
] | Peter Cho and Elizabeth Simmons |
hep-ph/9408204 | Electromagnetic pion form factor at finite temperature | The electromagnetic form factor of the pion in the space-like region, and at
finite temperature, $F_{\pi}(Q^{2},T)$, is obtained from a QCD Finite Energy
Sum Rule. The form factor decreases with increasing T, and vanishes at some
critical temperature, where the pion radius diverges. This divergence may be
interpreted a... | 1994-08-01 | 2009-10-28 | [
"hep-ph"
] | C.A.Dominguez, M.Loewe, and J.S.Rozowsky |
hep-ph/9408201 | Electroweak Baryogenesis and the Phase Transition Dynamics | The baryogenesis is reanalyzed based on the model by A.G.Cohen et al., in
which the lepton number, generated by the neutrinos' scattering from the bubble
walls appearing in the development of the electroweak phase transition, is
converted to the baryon number excess through the sphaleron transition. A
formula obtained ... | 1994-08-01 | 2019-08-15 | [
"hep-ph"
] | Azusa Yamaguchi, Akio Sugamoto |
hep-ph/9408208 | Astrophysical Implications of Neutrino Mass and Mixings | Astrophysical implications of neutrino mass and mixings are discussed. The
status of solar and atmospheric neutrino problems, and recent developments
concerning nuclear physics input to solar models and solar opacities are
reviewed. Implications of neutrino mass and mixings in supernova dynamics are
explored. The effec... | 1994-08-01 | 2009-10-28 | [
"hep-ph",
"astro-ph",
"nucl-th"
] | A.B. Balantekin |
hep-ph/9408202 | Combined constraints on the SUSY parameter space from $\Delta r$ ~and
Higgs boson search | Combining the constraints coming from the ~$M_W$ ~measurements and the
unsuccesful search for the Higgs boson at LEP we determine in the framework of
MSSM the allowed mass regions for the lighter scalar partner of the top quark.
For a heavy top quark particularily strong bounds are obtained for low values
of ~$\tan\bet... | 1994-08-01 | 2011-01-27 | [
"hep-ph"
] | Piotr H. Chankowski |
hep-ph/9407408 | Constraining Anomalous Top Quark Couplings at the Tevatron | We explore the influence of an anomalous chromomagnetic moment, $\kappa$,
onthe production characteristics of top quark pairs at the Tevatron. We find
that for top quarks in the 170 GeV mass range, present searches are probing
values of $\kappa$ of order ${1 \over 3}$. For $\kappa$'s in this range we find
that signific... | 1994-08-01 | 2009-10-28 | [
"hep-ph"
] | David Atwood, Alex Kagan, Tom Rizzo |
hep-ph/9408203 | Matching to all orders and power corrections in heavy quark effective
theory | This talk reports on various aspects of the divergence of perturbative
expansions in the context of matching QCD onto heavy quark effective theory.
Implications for exclusive and inclusive decays of heavy mesons are discussed. | 1994-08-01 | 2007-05-23 | [
"hep-ph"
] | M.Beneke |
hep-ph/9407410 | Quantum Mechanics and Linearized Gravitational Waves | The interaction of classical gravitational waves (GW) with matter is studied
within a quantum mechanical framework. The classical equations of motion in the
long wave-length limit is quantized and a Schroedinger equation for the
interaction of GW with matter is proposed. Due to its quadrapole nature, the GW
interacts w... | 1994-08-01 | 2009-10-28 | [
"hep-ph",
"astro-ph",
"gr-qc"
] | A. D. Speliotopoulos |
hep-ph/9408207 | A new cross term in the two-particle Hanbury-Brown-Twiss correlation
function | Using two specific models and a model-independent formalism, we show that in
addition to the usual quadratic ``side'', ``out'' and ``longitudinal'' terms, a
previously neglected ``out-longitudinal'' cross term arises naturally in the
exponent of the two-particle correlator. Since its effects can be easily
observed, suc... | 1994-08-01 | 2008-11-26 | [
"hep-ph"
] | Scott Chapman, Pierre Scotto and Ulrich Heinz |
hep-ph/9407409 | Calculation of Z Plus Four Jet Production at the Tevatron | We present the first calculation of $Z+4$ jet production with heavy quark
flavor identification at the Tevatron $p\bar p$ collider. The $Z + 4$ jet
channel is especially interesting as a normalizer for the $W +4$ jet background
to top quark signals, as a background to a possible $t\to cZ$ flavor-changing
neutral-curren... | 1994-08-01 | 2009-09-15 | [
"hep-ph"
] | V. Barger, E. Mirkes, R.J.N. Phillips and T. Stelzer |
hep-ph/9407406 | Determination of the CP Violating Phase $\gamma$ by a Sum Over Common
Decay Modes to $B_s$ and $\bar{B}_s$ | To help the difficult determination of the angle $\gamma$ of the unitarity
triangle, Aleksan, Dunietz and Kayser have proposed the modes of the type
$K^-D^+_s$, common to $B_s$ and $\bar{B}_s$. We point out that it is possible
to gain in statistics by a sum over all modes with ground state mesons in the
final state, i.... | 1994-07-31 | 2010-11-01 | [
"hep-ph"
] | R. Aleksan, A. Le Yaouanc, L. Oliver, O. P\`ene and J.-C. Raynal |
hep-ph/9407407 | Renormalons in Effective Field Theories | We investigate the high-order behavior of perturbative matching conditions in
effective field theories. These series are typically badly divergent, and are
not Borel summable due to infrared and ultraviolet renormalons which introduce
ambiguities in defining the sum of the series. We argue that, when treated
consistent... | 1994-07-31 | 2009-10-28 | [
"hep-ph"
] | Michael Luke, Aneesh V. Manohar, and Martin J. Savage |
hep-ph/9407405 | HBT Correlators -- Current Formalism vs. Wigner Function Formulation | We clarify the relationship between the current formalism developed by
Gyulassy, Kaufmann and Wilson and the Wigner function formulation suggested by
Pratt for the 2-particle correlator in Hanbury-Brown Twiss interferometry. When
applied to a hydrodynamical description of the source with a sharp freeze-out
hypersurface... | 1994-07-30 | 2009-10-09 | [
"hep-ph"
] | Scott Chapman and Ulrich Heinz |
hep-ph/9407404 | Electroweak Symmetry Breaking with Non-Universal Scalar Soft Terms and
Large $\tan\beta$ Solutions | We discuss radiative electroweak symmetry breaking with non-universal scalar
masses at the GUT scale. Large $\tan\beta$ solutions are investigated in detail
and it is shown that qualitatively new (as compared to the universal case)
solutions exist, with much less correlation between soft terms. We identify two
classes ... | 1994-07-29 | 2011-01-27 | [
"hep-ph"
] | M. Olechowski and S. Pokorski |
hep-ph/9407403 | Standard Model Baryogenesis | Simply on CP arguments, we argue against a Standard Model explanation of
baryogenesis via the charge transport mechanism. A CP-asymmetry is found in the
reflection coefficients of quarks hitting the electroweak phase boundary
created during a first order phase transition. The problem is analyzed both in
an academic zer... | 1994-07-29 | 2008-02-03 | [
"hep-ph",
"astro-ph"
] | M.B. Gavela, P.Hern\'andez, J. Orloff and O.P\`ene |
hep-ph/9407397 | Analysis of the anomalous events $e^{+}\,e^{-}\,\rightarrow\, l^{+}\,
\l^{-}\,\gamma\,\gamma$ | The $e^{+}\,e^{-}\,\rightarrow\,l^{+}\, \l^{-}\,\gamma\,\gamma$ anomalous
events, regis\-te\-red at $L3$ de\-tec\-tor at $e^+ e^-$ $CERN-LEP$ collider
have been analysed. It has been shown that the interpretation of such events as
a manifestation of scalar (pseudoscalar) resonance with the mass of 60 GeV
contradicts ot... | 1994-07-29 | 2009-03-12 | [
"hep-ph"
] | V.A.Litvin, S.R.Slabospitsky |
hep-ph/9407401 | Experiments to Find or Exclude a Long-Lived, Light Gluino | Gluinos in the mass range ~1 1/2 - 3 1/2 GeV are absolutely excluded. Lighter
gluinos are allowed, except for certain ranges of lifetime. Only small parts of
the mass-lifetime parameter space are excluded for larger masses unless the
lifetime is shorter than ~ 2 10^{-11} (m_{gluino}/ GeV) sec. Refined mass and
lifetime... | 1994-07-29 | 2009-10-28 | [
"hep-ph"
] | Glennys R. Farrar |
hep-ph/9407398 | Nontriviality of Gauge-Higgs-Yukawa System and Renormalizability of
Gauged NJL Model | In the leading order of a modified 1/Nc expansion, we show that a class of
gauge-Higgs-Yukawa systems in four dimensions give non-trivial and well-defined
theories in the continuum limit. The renormalized Yukawa coupling y and the
quartic scalar coupling \lambda have to lie on a certain line in the
(y,\lambda) plane an... | 1994-07-29 | 2017-02-01 | [
"hep-ph"
] | M. Harada, Y. Kikukawa, T. Kugo (Kyoto Univ.) and H. Nakano (Niigata
Univ.) |
hep-ph/9407400 | Implications of factorization for the determination of hadronic form
factors in $D_s^+ \ra \phi $ transition | Using factorization we determine the allowed domains of the ratios of form
factors, $x = A_2(0)/A_1(0)$ and $y = V(0)/A_1(0)$, from the experimentally
measured ratio $R_h \equiv \Gamma(D_s^+ \ra \phi \rho^+)/\Gamma(D_s^+ \ra \phi
\pi^+)$ assuming three different scenarios for the $q^2$-dependence of the form
factors. W... | 1994-07-29 | 2009-10-28 | [
"hep-ph"
] | M. Gourdin, A. N. Kamal, Y.Y. Keum and X. Y. Pham |
hep-ph/9407399 | Diffractive production of dijets at HERA | We investigate the production of a quark-antiquark pair in diffractive
photon- proton scattering, approximating soft pomeron exchange by the exchange
of two nonperturbative gluons. In deep inelastic scattering at HERA, events
with two jets and the scattered proton in the final state are predicted to be
observa- ble, wi... | 1994-07-29 | 2011-07-19 | [
"hep-ph"
] | M. Diehl |
hep-ph/9407402 | Chiral Sum-Rules for ${\cal L}^{WZ}_{(6)}$ Parameters and Application to
$\pi^0,\eta,\eta'$ Decays | The chiral expansion of the low energy processes $\pi^0\to\gamma\gamma$ and
$\eta\to\gamma\gamma$ is reconsidered with particular emphasis on the question
of the evaluation of the two low-energy parameters from ${\cal L}^{WZ}_{(6)}$
which are involved at chiral order six. It is shown how extensive use of
sum-rules and ... | 1994-07-29 | 2009-10-28 | [
"hep-ph"
] | B. Moussallam |
hep-ph/9407394 | Cancellation of Renormalon Ambiguities in the Heavy Quark Effective
Theory | Recently, it has been shown that the concept of the pole mass of a heavy
quark becomes ambiguous beyond perturbation theory, because of the presence of
infrared renormalons. We argue that the predictions of heavy quark effective
theory, whose construction is based on the pole mass, are free of such
ambiguities. In the ... | 1994-07-28 | 2009-10-09 | [
"hep-ph"
] | Matthias Neubert and Chris T. Sachrajda |
hep-ph/9407393 | Four Weak Gauge Boson Production at Photon Linear Collider and Heavy
Higgs Signal | We study the signals and backgrounds for a heavy Higgs boson in the processes
$\gamma\gamma\to WWWW$, $\gamma\gamma\to WWZZ$ at the photon linear collider.
The results are based on the complete tree level SM calculation for these
reactions. We show that the invariant mass spectrum of central $WW$, $ZZ$ pairs
is sensiti... | 1994-07-28 | 2009-10-28 | [
"hep-ph"
] | George Jikia |
hep-ph/9407395 | Bounds on Dirac Neutrino Masses from Nucleosynthesis | We derive new bounds on the Dirac mass of the tau and muonic neutrinos. By
solving the kinetic equation for the rate of energy deposition due to helicity
flipping processes and imposing the constraint that the number of effective
species contributing to the energy density at the time of nucleosynthesis be
$\Delta k_\nu... | 1994-07-28 | 2008-11-26 | [
"hep-ph"
] | A.D. Dolgov, K. Kainulainen and I.Z. Rothstein |
hep-ph/9407392 | Soft Supersymmetry Breaking from Gaugino Condensation | We study the structure of soft breaking terms in the context of a gaugino
condensation scenario. Assuming that the Supergravity Lagrangian is the correct
quantum field theory limit, at some momentum scale $\mu_{UV}$, of a more
fundamental one, we demonstrate that the correct result is obtained simply by
substituting, i... | 1994-07-28 | 2015-06-25 | [
"hep-ph"
] | B. de Carlos and M. Moretti |
hep-ph/9407396 | Inside the Quarks | We build a model which is based on the assumption that the {\bf c} and {\bf
s,b} quarks are excited states of {\bf u} and {\bf d} quarks. This model
predicts the non-existence of the {\bf top} quark and estimates the size of the
quarks to be of order $10^{-7}$ fm. | 1994-07-28 | 2008-02-03 | [
"hep-ph"
] | E.N.Rodionov |
hep-ph/9407387 | QCD Interconnection Effects \\ in Hadronic $W^+W^-$ and $t\bar{t}$
Events | In the events of the type $e^+e^- \rightarrow W^+W^- \rightarrow$ 4 jets,
$e^+e^- \rightarrow t\bar{t} \rightarrow bW^+\bar{b}W^-$, particle production
could depend in a non-trivial way on the kinematics of the process. It is shown
that QCD interference effects are negligible for energetic perturbative
emission, but so... | 1994-07-27 | 2016-09-01 | [
"hep-ph"
] | V A Khoze |
hep-ph/9407391 | Constraints on Massive Tau Neutrinos and their Cosmological Implications | We point out the following astrophysical consequences of a tau neutrino with
mass in the MeV range:
(i) if it has a small electric charge which will allow it to become a cold
dark matter of the universe, then present limits on the 511 KeV gamma ray line
rule out the possibility that it contributes an $\Omega_{\nu_{\t... | 1994-07-27 | 2016-09-01 | [
"hep-ph"
] | R. N. Mohapatra and S. Nussinov |
hep-ph/9407386 | Nuclear Broadening of Out-of-Plane Transverse Momentum in Di-Jet
Production | Recently claimed \cite{dj1,dj2,FC} anomalous nuclear effects in di-jet
production are analyzed in view of multiple interaction of projectile/ejectile
partons in nuclear matter. We derive model--independent relations between
A-dependence of the cross section and nuclear broadening of transverse
momentum. Comparison with... | 1994-07-27 | 2009-10-28 | [
"hep-ph",
"hep-ex"
] | Boris Kopeliovich |
hep-ph/9407389 | The Lightest Higgs Boson Mass in the Minimal Supersymmetric Standard
Model | We compute the upper bound on the mass of the lightest Higgs boson in the
Minimal Supersymmetric Standard Model in a model-independent way, including
leading (one-loop) and next-to-leading order (two-loop) radiative corrections.
We find that (contrary to some recent claims) the two-loop corrections are
negative with re... | 1994-07-27 | 2011-05-05 | [
"hep-ph"
] | J.A. Casas, J.R. Espinosa, M. Quir\'os and A. Riotto |
hep-ph/9407388 | Vector and pseudoscalar charm meson radiative decays | Combining heavy quark effective theory and the chiral Lagrangian approach we
investigate radiative decays of pseudoscalar $D$ mesons. We first reanalyse
$D^{*} \rightarrow D \gamma$ decays within the effective Lagrangian approach
using heavy quark spin symmetry, chiral symmetry Lagrangian, but including also
the light ... | 1994-07-27 | 2009-10-28 | [
"hep-ph"
] | B. Bajc, S. Fajfer and R.J. Oakes |
hep-ph/9407390 | J/psi+gamma Production at the Tevatron Energy | We study the process $\bar p p \rightarrow J/\psi + \gamma +X$ at the
Tevatron energy ($\sqrt{s} = 1.8$~TeV). The perturbative QCD contributions to
this process from the gluon-fusion and the fragmentation mechanisms are
computed. For the entire range of $p_T$ that can be probed at the Tevatron, the
fusion contribution ... | 1994-07-27 | 2009-10-28 | [
"hep-ph"
] | D.P. Roy and K. Sridhar |
hep-ph/9407383 | Abelian Action for Quark Confinement: A Direct Evaluation | We evaluate S_{APQCD}, the Abelian projection QCD(APQCD) action
nonperturbatively on the lattice. For SU(2), we find S_{APQCD} at strong
coupling is essentially the compact QED(CQED) action. At weaker coupling, we
find S_{APQCD} mutates: it gains additional operators, including an exogenous
NEGATIVE magnetic monopole m... | 1994-07-27 | 2016-09-01 | [
"hep-ph",
"hep-lat"
] | Ken Yee |
hep-ph/9407385 | Stability of Gauge Hierarchy in Einstein Supergravity | In supersymmetric grand unified theories, the gauge hierarchy achieved by a
fine-tuning in the superpotential can be violated in the presence of soft
breaking terms. We examine this problem in Einstein supergravity with
hidden-sector supersymmetry breaking. We show that the hierarchy is preserved
if couplings of the hi... | 1994-07-27 | 2007-05-23 | [
"hep-ph"
] | Izumi Joichi, Yoshiharu Kawamura and Masahiro Yamaguchi |
hep-ph/9407373 | Masses of $nS$-wave Heavy Quarkonium Levels from QCD Sum Rules | Using a specific scheme of the QCD sum rules, one derives an universal
formula for the mass differences for the $nS$-levels of heavy qiarkonium. This
relation does not depend on the flavours of the heavy quarks, composing the
quarkonium, and it is in a good agreement with the experimental mass values for
the $\psi$- an... | 1994-07-26 | 2007-05-23 | [
"hep-ph"
] | V.V.Kiselev |
hep-ph/9407384 | The Applicability of the Equivalence Theorem in $\chi PT$ | We have explicitely calculated the tree level elastic scattering cross
sections of two longitudinal gauge bosons, up to four derivatives in the chiral
expansion both with and without using the Equivalence Theorem (ET). The
numerical results show the existence of new and severe restrictions in the ET
energy applicabilit... | 1994-07-26 | 2019-08-17 | [
"hep-ph"
] | A.Dobado, J.R.Pelaez, M.Urdiales |
hep-ph/9407375 | Scaling Relation for Leptonic Constants\\ of Higher Excitations in Heavy
Quarkonium | Using a specific scheme of the QCD sum rules, one derives the relation for
leptonic constants of $nS$-wave heavy qiarkonia, so $f^2_{n_1}/f^2_{n_2}=
n_2/n_1$, that does not depend on the quarkonium content, and it is in a good
agreement with the experimental values of constants for the $\psi$- and
$\Upsilon$-families. | 1994-07-26 | 2007-05-23 | [
"hep-ph"
] | V.V.Kiselev |
hep-ph/9407372 | Diffractive Dissociation in Deep Inelastic Scattering at HERA | The diffraction dissociation of virtual photons is considered in the
framework of conventional Regge theory. It is shown that the recent HERA data
on large rapidity gap events can be successfully described in terms of the
Pomeron structure function. Using Regge factorization, the latter can be
related to the deuteron s... | 1994-07-26 | 2009-10-28 | [
"hep-ph"
] | A. Capella, A. Kaidalov, C. Merino and J. Tran Thanh Van |
hep-ph/9407382 | On Destabilizing Divergences in Supergravity Models | We show that, for standard N=1 supergravity coupled to chiral matter, if the
Kahler potential has no terms linear in chiral superfields then none are
generated through quad. div. one--loop corrections. If however <V>=0 and susy
is spontaneously broken, linear terms are present and new linear terms may be
generated due ... | 1994-07-26 | 2011-07-19 | [
"hep-ph"
] | Vidyut Jain |
hep-ph/9407378 | Charm Mixing and CP Violation in the Standard Model | The Standard Model predictions for $D^0$-$\bar{D}^0$ mixing and CP violation
in $D$ decays are revised. The emphasis is put on obtaining the order of
magnitude of the effects. In the case of mixing, the different approaches to
the long distance contributions are carefully discussed. The size of CP
asymmetries is discus... | 1994-07-26 | 2009-09-25 | [
"hep-ph"
] | Gustavo Burdman |
hep-ph/9407381 | Exponentiation of Multiparticle Amplitudes in Scalar Theories | It is argued that the amplitudes of the production of $n$ soft scalar
particles by one or a few energetic ones in theories like $\lambda\phi^4$ has
the exponential form, $A_n\propto\sqrt{n!}\exp[{1\over\lambda}F(\lambda
n,\epsilon)]$, in the regime $\lambda\to 0$, $\lambda n={fixed}$,
$\epsilon={fixed}$, where $\epsilo... | 1994-07-26 | 2008-11-26 | [
"hep-ph"
] | M.V.Libanov, V.A.Rubakov, D.T.Son and S.V.Troitsky |
hep-ph/9407370 | Hadronic $Z\gamma$ Production with QCD Corrections and Leptonic Decays | The process $p p \to Z \gamma + X \to \ell^- \ell^+ \gamma + X$, where $\ell$
denotes a lepton, is calculated to order $\alpha_s$. Total and differential
cross sections, with acceptance cuts imposed on the leptons and photon, are
given for the Tevatron and LHC center of mass energies. In general, invariant
mass and ang... | 1994-07-26 | 2009-10-28 | [
"hep-ph"
] | J. Ohnemus |
hep-ph/9407377 | Vacuum-Induced Quantum Decoherence and the Entropy Puzzle | Or: ``How to generate an ensemble in a single event?'' Following recent work
on entropy in strong interactions, I explain the concept of environment-induced
quantum decoherence in elementary quantum mechanics. The classically chaotic
inverted oscillator becomes partially decoherent already in the environment of
a singl... | 1994-07-26 | 2011-08-04 | [
"hep-ph"
] | Hans-Thomas Elze |
hep-ph/9407380 | Hadronization cross--sections at the chiral phase transition of a quark
plasma | Hadronization at finite temperature $T$ is discussed in the framework of the
Nambu--Jona-Lasinio model. The differential cross-section for the conversion of
a quark--antiquark pair into two pions to first order in a $1/N_c$ expansion is
calculated as a function of the c.m.~energy $s$ and temperature $T$. In
particular,... | 1994-07-26 | 2010-11-01 | [
"hep-ph"
] | J. H\"ufner, S.P. Klevansky, E.Quack and P. Zhuang |
hep-ph/9407379 | A Model Independent Analysis of Solar Neutrino Data | The results of a solar model independent analysis of the existing solar
neutrino data under the assumption of MSW transitions in matter or vacuum
oscillations (in the cases of $\nu_{e}$--$\nu_{\mu}(\nu_{\tau})$ and
$\nu_{e}$--$\nu_{\mathrm{S}}$ mixing) are presented. The analysis was done in
two cases. In the first cas... | 1994-07-26 | 2009-10-28 | [
"hep-ph",
"astro-ph"
] | S.M. Bilenky and C. Giunti |
hep-ph/9407376 | Intrinsic Charm Contribution to $J/\psi$ Plus Open Charm Associated
Production at High Energies | We present the results of a calculation of the intrinsic charm quark
contribution to $J/\psi$ plus open charm associated production at large
transverse momentum in hadron collisions at high energies.
It is shown that the value of the cross section for such process and its
energy dependence are significantly determine... | 1994-07-26 | 2009-10-28 | [
"hep-ph"
] | A.P Martynenko and V.A. Saleev |
hep-ph/9407371 | Scaling Properties of $S$-wave Level Density for Heavy Quarkonium from
QCD Sum Rules | In the framework of a specific scheme of the QCD sum rules for $S$-wave
levels of the heavy quarkonium, one derives an expression, relating the
energetic density of quarkonium states and universal characteristics in the
heavy quarkonium physics, such as the difference between the masses of a heavy
quark $Q$ and meson $... | 1994-07-26 | 2007-05-23 | [
"hep-ph"
] | V.V.Kiselev |
hep-ph/9407374 | Experimental Evidence for Simple Relations between Unpolarized and
Polarized Parton Distributions | The Pauli exclusion principle is advocated for constructing the proton and
neutron deep inelastic structure functions in terms of Fermi-Dirac
distributions that we parametrize with very few parameters. It allows a fair
description of the recent NMC data on $F^p_2(x,Q^2)$ and $F^n_2(x,Q^2)$ at
$Q^2=4 GeV^2$, as well as ... | 1994-07-26 | 2010-11-01 | [
"hep-ph"
] | C. Bourrely, J. Soffer |
hep-ph/9407367 | Extending the Kinematic Range for $W_R$ Searches in $e^-e^-$ Collisions
at the NLC | While the much discussed lepton-number violating process $e^-e^-\rightarrow
W_R^-W_R^-$ provides an excellent probe of both the Majorana nature of the
right-handed neutrino and the symmetry breaking sector of the Left-Right
Symmetric Model, it is likely that $W_R$'s are too massive to be pair produced
at the NLC with $... | 1994-07-25 | 2009-09-25 | [
"hep-ph"
] | Thomas G. Rizzo |
hep-ph/9407368 | Dynamics of Chiral Symmetry Breaking in Nuclear Collisions | Measurements of disoriented chiral condensates in heavy ion collisions at
RHIC and the LHC can yield fundamental information on the nature of the QCD
phase transition. I review theoretical efforts to understand the evolution of
the condensate and present new results on experimental signals in the single
pion spectrum a... | 1994-07-25 | 2007-05-23 | [
"hep-ph"
] | Sean Gavin (Brookhaven National Laboratory) |
hep-ph/9407364 | Anomalous di-photon production at LEP: possible consequences at FNAL
hadron collider | The hypothetic R--resonance production (anomalous "$l\bar l\gamma\gamma$"
events at LEP) with 60 GeV mass at FNAL hadron collider has been considered.
The cross-section of this R-resonance production with the consequent decay $R
\to \gamma\gamma$ is obtained. Various distributions of leptons and photons in
the process ... | 1994-07-25 | 2009-09-25 | [
"hep-ph"
] | V. A. Litvin, S. R. Slabospitsky, A. V. Shvorob |
hep-ph/9407365 | New Measurement of the Single Diffraction Dissociation and the Nature of
the Nature of the Pomeron | Recent data on single diffraction dissociation, measured by the CDF at the
Tevatron show a moderate increase with energy of the cross section, thus
confirming the predictions based on the dipole pomeron model. | 1994-07-25 | 2019-08-17 | [
"hep-ph"
] | L.L. Jenkovszky and B.V. Struminsky |
hep-ph/9407363 | LEP $e^{+}\,e^{-}\,\rightarrow\,\mu^{+}\, \mu^{-}\,\gamma\,\gamma$
events and their consequences at future $e^+e^-$ colliders | The $e^{+}\,e^{-}\,\rightarrow\,l^{+}\, \l^{-}\,\gamma\,\gamma$ anomalous
events, detected by $L3$ de\-tec\-tor at $e^+ e^-$ $CERN-LEP$ collider have
been analysed. It has been shown that the interpretation of such events as a
manifestation of scalar (pseudoscalar) resonance with the mass of 60 GeV
contradicts other ex... | 1994-07-25 | 2009-09-25 | [
"hep-ph"
] | V.A. Litvin, S.R. Slabospitsky |
hep-ph/9407366 | Signals for Top Quark Anomalous Chromomagnetic Moments at Colliders | The Tevatron and the Next Linear Collider(NLC) will be excellent tools for
probing the detailed nature of the top quark. We perform a preliminary
examination of the influence of an anomalous chromomagnetic moment for the top,
$\kappa$, on the characteristics of $t\bar t$ production at the Tevatron and on
the spectrum o... | 1994-07-25 | 2009-09-25 | [
"hep-ph"
] | Thomas G. Rizzo |
hep-ph/9407369 | Baryogenesis in Brief | In this talk I briefly review the main ideas and challenges involved in the
computation of the baryon asymmetry of the Universe. (Invited talk given at
``The Birth of the Universe and Fundamental Physics'', Rome, May 18--21, 1994.) | 1994-07-25 | 2009-10-28 | [
"hep-ph",
"astro-ph"
] | Marcelo Gleiser |
hep-ph/9407357 | Higgs Mass Bounds Separate Models of Electroweak Symmetry Breaking | Vacuum stability implies a lower limit on the mass of the higgs boson in the
Standard Model (SM). In contrast, an upper limit on the lightest higgs mass can
be calculated in supersymmetric (susy) models. The main uncertainty in each
limit is the value of the top mass, which may now be fixed by the recent CDF
result. We... | 1994-07-22 | 2015-06-25 | [
"hep-ph"
] | Marco A. Diaz, Tonnis A. ter Veldhuis and Thomas J. Weiler |
hep-ph/9407356 | Thermal Versus Vacuum Magnetization in QED | The magnetized relativistic Fermi and Bose gases are studied at finite
temperature and density.In the case of the Fermi gas, the contribution to the
magnetization from the vacuum becomes dominant for high magnetic fields, when
the thermal contribution saturates.
In the case of the charged Bose gas, the (paramagnetic)... | 1994-07-22 | 2009-10-28 | [
"hep-ph",
"hep-th"
] | Per Elmfors, Per Liljenberg, David Persson and Bo-Sture Skagerstam |
hep-ph/9407359 | BFKL versus O(\alpha_s^3) Corrections to Large-rapidity Dijet Production | We examine dijet production at large rapidity intervals at Tevatron energies
by comparing an exact ${\cal O}(\alpha_s^3)$ calculation with the BFKL
approximation, which resums the leading powers of the rapidity interval $y$ to
all orders in $\alpha_s$. We analyze the dependence of the exact ${\cal
O}(\alpha_s^3)$ calcu... | 1994-07-22 | 2008-11-26 | [
"hep-ph"
] | Vittorio Del Duca and Carl R. Schmidt |
hep-ph/9407361 | Exclusive Processes: Tests of Coherent QCD Phenomena and Nucleon
Substructure at CEBAF - | Measurements of exclusive processes such as electroproduction,
photoproduction, and Compton scattering are among the most sensitive probes of
proton structure and coherent phenomena in quantum chromodynamics. The
continuous electron beam at CEBAF, upgraded in laboratory energy to 10--12 GeV,
will allow a systematic stu... | 1994-07-22 | 2009-09-25 | [
"hep-ph"
] | Stanley J. Brodsky, SLAC |
hep-ph/9407355 | Condensation and Magnetization of the Relativistic Bose Gas | We present a simple proof of the absence of Bose--Einstein condensation of a
relativistic boson gas, in any finite local magnetic field in less than five
dimensions. We show that the relativistic charged boson gas exhibit a genuine
Meissner--Ochsenfeld effect of the Schafroth form at fixed supercritical
density. As in ... | 1994-07-22 | 2019-08-17 | [
"hep-ph",
"hep-th"
] | P.Elmfors, P.Liljenberg, D.Persson and B.-S.Skagerstam |
hep-ph/9407362 | High Energy Photon-Photon Collisions - | The collisions of high energy photons produced at an electron-positron
collider provide a comprehensive laboratory for testing QCD, electroweak
interactions, and extensions of the Standard Model. The luminosity and energy
of the colliding photons produced by back-scattering laser beams is expected to
be comparable to t... | 1994-07-22 | 2009-09-25 | [
"hep-ph"
] | Stanley J. Brodsky, SLAC, and Peter M. Zerwas, DESY |
hep-ph/9407351 | Neutrinos From Particle Decay in the Sun and Earth | Weakly interacting massive particles (WIMPs) may be indirectly detected by
observation of upward muons induced by energetic neutrinos from annihilation of
WIMPs that have accumulated in the Sun and/or Earth. Energetic muon neutrinos
come from the decays of $\tau$ leptons, $c$, $b$, and $t$ quarks, gauge bosons,
and Hig... | 1994-07-22 | 2011-01-25 | [
"hep-ph",
"astro-ph"
] | Gerard Jungman and Marc Kamionkowski |
hep-ph/9407358 | Scalar three-body decays and signals for new physics | If massive invisible particles are pair-produced in a three-body decay, then
the energy distribution of the other (visible) product is sensitive to the mass
of the invisible pair. We use this fact in the context of a Higgs boson
decaying into (i)a Z-boson and two massive neutrinos of a fourth generation,
and (ii)a Z an... | 1994-07-22 | 2015-06-25 | [
"hep-ph"
] | Rathin Adhikari and Biswarup Mukhopadhyaya |
hep-ph/9407360 | Inclusive photoproduction of hadrons at HERA | We study inclusive photoproduction of hadrons at HERA via both direct and
resolved photons to next-to-leading order (NLO) in the QCD-improved parton
model. We predict transverse-momentum ($\pt$) and rapidity ($\ylab$)
distributions and compare them with recent data by the H1 Collaboration. To
estimate the theoretical e... | 1994-07-22 | 2007-05-23 | [
"hep-ph"
] | Bernd A. Kniehl II (Inst. f"ur Exp. Phys., Univ. Hamburg) |
hep-ph/9407354 | Vanishing condensates and anomalously light Goldstone modes in medium | We show that in a uniform medium, the vanishing of a particular condensate
along with spontaneously broken symmetry imply the existence of an anomalously
light pseudo-Goldstone mode. The consequences for a vanishing chiral condensate
in nuclear matter are discussed. | 1994-07-22 | 2009-10-28 | [
"hep-ph"
] | T. D. Cohen and W. Broniowski |
hep-ph/9407352 | Instanton--Antiinstanton pair induced Asymptotics of Perturbation Theory
in QCD | The instanton--antiinstanton pair induced asymptotics of perturbation theory
expansion for QCD correlators is considered. It is argued that though the true
asymptotics is dominated by renormalon, the instanton-induced contribution may
dominate in the intermediate asymptotics $n= 5\div 15$.
Obtained asymptotic formula... | 1994-07-22 | 2009-10-28 | [
"hep-ph",
"hep-th"
] | P.G.Silvestrov |
hep-ph/9407353 | Calculation of the D and B Meson Lifetimes | Using the expansions of the heavy meson decay widths in the heavy quark mass
and QCD sum rules for estimates of corresponding matrix elements,\, we
calculate the $D^{\pm,o,s}$ decay widths and the $B^{\pm,o,s}$ lifetime
differences. The results for D mesons are in agreement with the data,\, while
it is predicted that $... | 1994-07-22 | 2009-09-25 | [
"hep-ph"
] | Victor Chernyak |
hep-ph/9407348 | Probing the Heavy Quark Content of the Photon Using b Tagging at High
Energy $e\gamma$ and $e^+e^-$ Colliders | We suggest a method for probing the quark content of the photon using $b$
tagging at high energy $e^+e^-$ and $e\gamma$ colliders. We find that heavy
quark tagging provides a sensitive and effective probe of the quark content of
the photon especially in the low $x$-region where the various models differ the
most. This ... | 1994-07-21 | 2009-10-28 | [
"hep-ph"
] | Michael A. Doncheski, Stephen Godfrey and K. Andrew Peterson |
hep-ph/9407347 | Next-to-Leading Order Fragmentation Functions for Pions and Kaons | We present new sets of fragmentation functions for charged pions and kaons,
both at leading and next-to-leading order. They are fitted to TPC data taken at
energy $\sqrt s=29$~GeV and describe excellently a wealth of other $e^+e^-$
data on charged-hadron production, ranging from $\sqrt s=5.2$~GeV way up to
LEP~1 energy... | 1994-07-21 | 2009-10-28 | [
"hep-ph"
] | J. Binnewies, B.A. Kniehl, and G. Kramer (Univ. Hamburg) |
hep-ph/9407349 | On the Choice of Dispersion Relation to Calculate the QCD Correction to
$\Gamma(H\to \ell^+\ell^-) | We use the Operator Product Expansion (OPE) of quark vacuum polarization
functions to show that the dispersion relation of Kniehl and Sirlin will yield
the correct result to all orders in $\alpha_s$ when applied to the QCD
correction to the leptonic decay width of the Higgs boson. | 1994-07-21 | 2009-10-28 | [
"hep-ph"
] | Tatsu Takeuchi, Aaron K. Grant, and Mihir Worah |
hep-ph/9407346 | Non-Zero Electric Charge of the Neutrino and the Solar Neutrino Problem | It has recently been shown that the neutrino can have non-zero electric
charge in a number of gauge theories, including the Minimal Standard Model.
Assuming non-zero neutrino charge, we develop a new approach to the solar
neutrino problem. The key idea is that the charged neutrinos will be deflected
by the Lorentz forc... | 1994-07-21 | 2011-07-19 | [
"hep-ph",
"astro-ph"
] | A.Yu.Ignatiev and G.C.Joshi |
hep-ph/9407344 | Infrared factorization in inclusive B meson decays | We perform infrared factorization of differential rates of radiative and
semileptonic inclusive decays of the B meson in the end-point region of photon
and charged lepton spectrum, respectively, in the leading heavy quark mass
limit. We find that the differential rates are expressed in terms of hard, jet
and soft funct... | 1994-07-21 | 2014-11-17 | [
"hep-ph"
] | G.P.Korchemsky and G.Sterman |
hep-ph/9407345 | Probing the Heavy Quark Content of the Photon Using b Tagging at
Electron Photon Colliders | We study the prospects for probing the quark content of the photon using b
tagging at high energy electron-photon colliders. We find that heavy quark
tagging provides a sensitive and effective probe of the quark content of the
photon. Using a 500 GeV $e^+e^-$\ NLC in electron-photon mode, the cross
section for $eb_{\ga... | 1994-07-21 | 2019-08-15 | [
"hep-ph"
] | K. Andrew Peterson, M. A. Doncheski and Stephen Godfrey |
hep-ph/9407350 | Gauge independent Chiral Symmetry Breaking in Quenched QED | In quenched QED we construct a non-perturbative fermion-boson vertex that
ensures the fermion propagator satisfies the Ward-Takahashi identity, is
multiplicatively renormalizable, agrees with perturbation theory for weak
couplings and has a critical coupling for dynamical mass generation that is
strictly gauge independ... | 1994-07-21 | 2009-10-28 | [
"hep-ph"
] | A.Bashir and M.R.Pennington |
hep-ph/9407336 | A nonlocal, covariant generalisation of the NJL model | We solve a nonlocal generalisation of the NJL model in the Hartree
approximation. This model has a separable interaction, as suggested by
instanton models of the QCD vacuum. The choice of form factor in this
interaction is motivated by the confining nature of the vacuum. A conserved
axial current is constructed in the ... | 1994-07-20 | 2011-08-17 | [
"hep-ph",
"nucl-th"
] | R. D. Bowler and M. C. Birse |
hep-ph/9407342 | Parity Violating Longitudinal Muon Polarization in
$K^+\to\pi^+\mu^+\mu^-$ Beyond Leading Logarithms | We generalize the existing analyses of the parity violating muon polarization
asymmetry $\Delta_{LR}$ in $K^+\to\pi^+\mu^+\mu^-$ beyond the leading
logarithmic approximation. The inclusion of next--to--leading QCD corrections
reduces the residual dependence on the renormalization scales, which is quite
pronounced in th... | 1994-07-20 | 2009-10-09 | [
"hep-ph"
] | G. Buchalla and A.J. Buras |
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