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 |
|---|---|---|---|---|---|---|
hep-ph/9210224 | Dilatons in the topological soliton model for the hyperons | We show that the predicted hyperon masses in the topological soliton model
are very sensitive to the value of the gluon condensate parameter that appears
when the scale invariance and trace anomaly of QCD are taken into account by
introduction of a dilaton field. This contrasts with the insensitivity of the
soliton pro... | 1992-10-09 | 2009-10-22 | [
"hep-ph"
] | K. Tsushima and D.O. Riska |
hep-ph/9210223 | The effective potential at finite temperature in the left-right
symmetric model | We obtain the effective potential at finite temperature within the left-right
symmetric model. We take the Higgs sector to consist of two doublets and
calculate its finite temperature effective potential up to the order of
``ring-diagrams'', using analogous techniques to those employed in the
derivation of the effectiv... | 1992-10-09 | 2008-11-26 | [
"hep-ph"
] | J. Choi and R. R. Volkas |
hep-ph/9210225 | Instability of Bubbles Near the Hadron--Quark-Gluon-Plasma Phase
Transition | The small surface tension of the interface between hadronic and
quark-gluon-plasma domains, along with a negative curvature tension, implies
that the uniform plasma is unstable against spontaneous formation of hadronic
bubbles. We furthermore show that spherical bubbles are not stable against
small perturbations. | 1992-10-09 | 2008-02-03 | [
"hep-ph"
] | Gideon Lana and Benjamin Svetitsky |
hep-ph/9210226 | Variational Method for Studying Solitons in the KdV equation | We use a class of trial wave functions which are generalizations of gaussians
to study single soliton approximate analytic solutions to the KdV equations.
The variational parameters obey a Hamiltonian dynamics obtained from the
Principle of Least Action. We get extremely accurate approximate single soliton
solutions in... | 1992-10-09 | 2009-10-22 | [
"hep-ph"
] | F.Cooper, C.Lucheroni, H.Shepard and P. Sodano |
hep-ph/9210222 | Signatures for Heavy $\bf Z'$ Bosons at Hadron Colliders | We discuss three promising diagnostic probes of the couplings of a possible
heavy $Z'$ boson at hadron colliders: the forward-backward asymmetry into
leptons, the rare decay $Z' \ra W^{\pm} \ell^{\mp} \nu$, and associated
production $pp \ra Z'W,\; Z'Z$. A general model-independent framework is
proposed for interpreting... | 1992-10-08 | 2009-10-22 | [
"hep-ph"
] | Mirjam Cvetic and Paul Langacker |
hep-ph/9210220 | The Cheshire Cat Bag Model: Color Anomaly and $\eta'$ Properties | We show that color can leak from a QCD bag if we allow for pseudoscalar
isoscalar singlet ($\eta'$) coupling at the surface. To enforce total
confinement of color an additional boundary term is suggested. New relations
between the $\eta'$ mass and decay constant and the QCD gluon condensates are
derived and compared wi... | 1992-10-08 | 2007-05-23 | [
"hep-ph",
"nucl-th"
] | A. Wirzba |
hep-ph/9210221 | Solar Neutrino Data, Solar Model Uncertainties and Neutrino Oscillations | We incorporate all existing solar neutrino flux measurements and take solar
model flux uncertainties into account in deriving global fits to parameter
space for the MSW and vacuum solutions of the solar neutrino problem. | 1992-10-08 | 2008-11-26 | [
"hep-ph",
"astro-ph"
] | Lawrence M. Krauss, Evalyn Gates, and Martin White |
hep-ph/9210218 | Finite Unified Models | We present phenomenologically viable $SU(5)$ unified models which are finite
to all orders before the spontaneous symmetry breaking. In the case of two
models with three families the top quark mass is predicted to be 178.8 GeV. | 1992-10-07 | 2011-07-19 | [
"hep-ph",
"hep-th"
] | D. Kapetanakis, M. Mondragon and G. Zoupanos |
hep-ph/9210217 | A Non-Standard Quark Model and the Mass Difference $\Xi^- - \Xi^0$ | We show that a highly unconventional theory, based on the 16 dimensional
(${3\over2}$,${3\over2}$) irreducible representation of O(4), fits the masses
of the baryons
$\Xi^-$,$\Xi^0$,$\Sigma^-$,$\Sigma^0$,$\Sigma^+$,$\Lambda$,$p$,$n$ and the
leptons $\mu$,$e$,$\nu_\mu$,$\nu_e$ to within current experimental error, yet
y... | 1992-10-07 | 2007-05-23 | [
"hep-ph"
] | J. Tinka Gammel and John L. Gammel |
hep-ph/9210219 | Gaugino condensation in 4-D superstring models | We study the possibility that supersymmetry is broken via a gaugino
condensate in four dimensional string theories. We derive an effective
low-energy theory describing the Goldstone mode associated with the R-symmetry
breaking driven by gaugino condensation and show that this gives a description
of gaugino condensation... | 1992-10-07 | 2009-10-22 | [
"hep-ph"
] | A. de la Macorra and G. G. Ross |
hep-ph/9210215 | QCD non-leading corrections to weak decays in the dimensional scheme | We compute the next to leading QCD corrections to weak four fermion
interactions introducing a scheme that does not require an explicit definition
of $\gamma_5$ in $d$ dimensions. This scheme reduces greatly the difficulties
in calculating the two loop anomalous dimensions; we recover the results
obtained in the previo... | 1992-10-06 | 2016-09-01 | [
"hep-ph"
] | G. Curci and G. Ricciardi |
hep-ph/9210216 | Complementarity of Resonant and Nonresonant Strong WW Scattering at SSC
and LHC | Signals and backgrounds for strong $WW$ scattering at the SSC and LHC are
considered. Complementarity of resonant signals in the $I=1$ $WZ$ channel and
nonresonant signals in the $I=2$ \wpwp channel is illustrated using a chiral
lagrangian with a $J=1$ \qrho resonance. Results are presented for purely
leptonic final st... | 1992-10-06 | 2009-10-22 | [
"hep-ph"
] | Michael Chanowitz |
hep-ph/9210209 | Large-$N_c$ Higher Order Weak Chiral Lagrangians for Nonleptonic and
Radiative Kaon Decays | In pure chiral perturbation theory (ChPT) the couplings of higher order
Lagrangian terms are running parameters and hence can be determined only
empirically from various low-energy hadronic processes. While this scenario
works well for strong interactions, it is unsatisfactory for nonleptonic and
radiative nonleptonic ... | 1992-10-05 | 2007-05-23 | [
"hep-ph"
] | Hai-Yang Cheng |
hep-ph/9210213 | Multiphoton Production at High Energies in the Standard Model I | We examine multiphoton production in the electroweak sector of the Standard
Model in the high energy limit using the equivalence theorem in combination
with spinor helicity techniques. We obtain recursion relations for currents
consisting of a charged scalar, spinor, or vector line that radiates $n$
photons. Closed for... | 1992-10-05 | 2009-10-22 | [
"hep-ph"
] | G. Mahlon and T.M. Yan |
hep-ph/9210210 | Wiggly Relativistic Strings | We derive the equations of motion for general strings, i.e. strings with
arbitrary relation between tension $\tau$ and energy per unit length
$\epsilon$. The renormalization of $\tau$ and $\epsilon$ that results from
averaging out small scale wiggles on the string is obtained in the general case
to lowest order in the ... | 1992-10-05 | 2009-10-22 | [
"hep-ph",
"astro-ph"
] | Jooyoo Hong, Jaewan Kim, and Pierre Sikivie |
hep-ph/9210211 | More About Discrete Gauge Anomalies | I discuss and extend several results concerning the cancellation of discrete
gauge anomalies. I show how heavy fermions do not decouple in the presence of
discrete gauge anomalies. As a consequence, in general, cancellation of
discrete gauge anomalies cannot be described merely in terms of low energy
operators involvin... | 1992-10-05 | 2009-10-22 | [
"hep-ph"
] | Luis E. Ibanez |
hep-ph/9210212 | Generalized Gluon Currents and Applications in QCD | We consider the process containing two quark lines and an arbitrary number of
gluons in a spinor helicity framework. A current with two off-shell gluons
appears in the amplitude. We first study this modified gluon current using
recursion relations. The recursion relation for the modified gluon current is
solved for the... | 1992-10-05 | 2009-10-22 | [
"hep-ph"
] | G. Mahlon, T.M. Yan, and C. Dunn |
hep-ph/9210214 | Multiphoton Production at High Energies in the Standard Model II | We examine multiphoton production in the electroweak sector of the Standard
Model in the high energy limit using the equivalence theorem in combination
with spinor helicity techniques. We utilize currents consisting of a charged
scalar, spinor, or vector line that radiates $n$ photons. Only one end of the
charged line ... | 1992-10-05 | 2009-10-22 | [
"hep-ph"
] | G. Mahlon |
hep-ph/9210208 | Hidden Local Symmetry at One Loop | We show that one-loop corrections with the hidden gauge boson loop preserve
in the low energy limit all the successful tree level predictions of the hidden
local symmetry in the SU(2)${}_L$$\times$SU(2)${}_R$$/$SU(2)${}_V$ chiral
Lagrangian. Most amazingly, the $\rho$ meson dominance of the pion
electromagnetic form fa... | 1992-10-04 | 2009-10-22 | [
"hep-ph"
] | Masayasu Harada and Koichi Yamawaki |
hep-ph/9210205 | Anomalies in the effective theory of heavy quarks | The question of the anomalies in the effective theory of heavy quarks is
investigated at two different levels. Firstly, it is shown that none of the
symmetries of this effective theory contains an anomaly. The existence of a new
`$ \gamma _ 5 $'-symmetry is pointed out and shown to be also anomaly free.
Secondly, it is... | 1992-10-02 | 2009-10-22 | [
"hep-ph",
"hep-th"
] | J. Soto and R. Tzani |
hep-ph/9210207 | Asymptotic Freedom and the Emergence of QCD | I describe our understanding of the strong interactions at the end of the
1960's and the impact of the experiments on deep inelastic scattering. I recall
the steps that lead from the attempts to understand these experiments to the
discovery of asymptotic freedom in 1973 and the subsequent rapid emergence,
development a... | 1992-10-02 | 2007-05-23 | [
"hep-ph",
"hep-th"
] | David J. Gross |
hep-ph/9210206 | Non-Gaussian Corrections to Higgs Mass in Autonomous lambda phi**4 | Recent calculations in one-loop and Gaussian appro- ximation, using the
so-called autonomous renormalization scheme, indicate a comparatively massive,
narrow Higgs excitation at about 2 TeV. Here I show that this result
qualitatively persists in the framework of a post-Gaussian variational
approximation for the pure O(... | 1992-10-02 | 2014-11-17 | [
"hep-ph",
"hep-th"
] | Uwe Ritschel |
hep-ph/9210201 | Stringy Origin of Neutrino Masses within the Minimal Supersymmetric
Standard Model | We present a ``gravity-induced'' seesaw mechanism, which accommodates
neutrino masses ($m_\nu\propto m_u^2/M_I$, with $m_u$ the corresponding quark
mass and $M_I\simeq 4\times10^{11}$ GeV) compatible with the MSW study of the
Solar neutrino deficit within the minimal supersymmetric Standard Model (the
grand desert with... | 1992-10-01 | 2007-05-23 | [
"hep-ph"
] | Mirjam Cvetic |
hep-ph/9210202 | Double Beta Decay | I review the subject of double beta decay with emphasis upon its implications
for the neutrino. It is shown that even if right-handed currents provide the
phenomenological mechanism for no-neutrino decay, the fundamental mechanism
underlying the process must be neutrino mass. Estimates of the mass required
suggest that... | 1992-10-01 | 2007-05-23 | [
"hep-ph"
] | S. P. Rosen |
hep-ph/9210203 | MSW Implications of Solar Neutrino Experiments | I discuss the implications for future solar neutrino experiments of the most
recent gallium data in the context of the MSW mechanism. At the low energy end
of the solar neutrino spectrum we need to measure the $^7$Be component
directly; and at the high energy end, we need precise measurements of the shape
of the spectr... | 1992-10-01 | 2009-10-22 | [
"hep-ph"
] | S. P. Rosen |
hep-ph/9210204 | Natural Hadronic Degrees of Freedom for an Effective QCD Action in the
Front Form | On the one hand any effective action of the QCD,
$S[\pi,\,\rho,\,\omega,\ldots,N,\,\overline N,\,\Delta^{3/2},\ldots]$, would
involve, at least in principle, a tower of hadronic fields of all spins; on the
other hand the front form of the field theory has emerged as an appropriate
framework to investigate the high ener... | 1992-10-01 | 2007-05-23 | [
"hep-ph",
"nucl-th"
] | D. V. Ahluwalia and Mikolaj Sawicki |
hep-ph/9209297 | Model Dependence of Baryon Decay Enhancement by Cosmic Strings | Cosmic strings arising from GUTs can catalyse baryon decay processes with
strong interaction cross sections. We examine the mechanism by which the cross
section is enhanced and find that it depends strongly on the details of the
distribution of gauge fields within the string core. We propose a calculational
scheme for ... | 1992-09-30 | 2008-11-26 | [
"hep-ph",
"hep-th"
] | C.J. Fewster and B.S. Kay |
hep-ph/9209298 | Limits on Neutrino Radiative Decay from Sn1987a | We calculate limits on the properties of neutrinos using data from gamma-ray
detectors on the Pioneer Venus Orbiter and Solar Max Mission satellites. A
massive neutrino decaying in flight from the supernova would produce gamma rays
detectable by these instruments. The lack of such a signal allows us to
constrain the ma... | 1992-09-30 | 2007-05-23 | [
"hep-ph",
"astro-ph"
] | Andrew H. Jaffe, Ed Fenimore, Michael S. Turner |
hep-ph/9209296 | The Supersymmetric Singlet Majoron | We study the supersymmetrized version of the singlet majoron model and,
performing an analysis of the renormalization group equation improved
potential, we find that a spontaneous breaking of $R$-parity can be achieved
for a wide range of the parameters. Studying the finite temperature effective
potential, we show that... | 1992-09-30 | 2009-10-22 | [
"hep-ph"
] | G.F. Giudice, A. Masiero, M. Pietroni, A. Riotto |
hep-ph/9209295 | Spontaneous CP Violation, Small Instanton and Invisible Axion | I propose a variant invisible axion model of spontaneous CP violation at the
electroweak scale without CP domain wall and `strong CP' problems. Both large
size QCD and small size non-QCD instantons break CP and Peccei-Quinn
symmetries, and render cosmologically harmful CP domain walls unstable. The
decaying epoch depen... | 1992-09-30 | 2009-12-30 | [
"hep-ph",
"astro-ph"
] | Soo-Jong Rey |
hep-ph/9209299 | Majorons Without Majorana Masses and Neutrinoless Double Beta Decay | We explain excess events near the endpoints of the double beta decay spectra
of several elements, using the neutrinoless emission of massless Goldstone
bosons. Models with scalars carrying lepton number $-2$ are proposed for this
purpose so that ordinary neutrinoless double beta decay is forbidden, and we
can raise the... | 1992-09-30 | 2009-10-22 | [
"hep-ph"
] | C.P. Burgess and J.M. Cline |
hep-ph/9209290 | The Extended Bess Model: Bounds from Precision Electroweak Measurements | We present an effective Lagrangian parameterization describing scalar,
vector, and axial-vector bound states, originating from a strong breaking of
the electroweak symmetry, based on the global symmetry $SU(N)_L\otimes
SU(N)_R$. In this approach vector and axial-vector bound states are gauge
bosons associated to a hidd... | 1992-09-29 | 2015-05-18 | [
"hep-ph"
] | R. Casalbuoni, A. Deandrea, S. De Curtis, N. Di Bartolomeo, D.
Dominici, F. Feruglio, R. Gatto |
hep-ph/9209291 | $D$-$\bar D$ Mixing in Heavy Quark Effective Field Theory | I analyze $D$-$\ol D$ mixing using the techniques of heavy quark effect field
theory. The analysis suggests that the there may be important cancellations
among the dispersive effects of different kinds of final states, so that the
total mixing may be considerably smaller than previous estimates. | 1992-09-29 | 2009-09-11 | [
"hep-ph"
] | Howard Georgi |
hep-ph/9209292 | Neutralino Dark Matter in a Class of Unified Theories | The cosmological significance of the neutralino sector is studied for a class
of models in which electroweak symmetry breaking is seeded by a gauge singlet.
Extensive use is made of the renormalisation group equations to significantly
reduce the parameter space, by deriving analytic expressions for all the
supersymmetr... | 1992-09-29 | 2011-02-16 | [
"hep-ph",
"astro-ph"
] | S.A. Abel, S. Sarkar and I.B. Whittingham |
hep-ph/9209289 | The Rule of Discarding $1/N_c$ in Inclusive Weak Decays. II | We calculate the leading preasymptotic correction to the inclusive width
$b\rightarrow \bar c c s$ (two massive quarks in the final state) due to the
operator $\vec \sigma \vec H$. It is found that this correction tends to cancel
the $1/N_c$ part of the inclusive width calculated using naive factorization.
The absolute... | 1992-09-29 | 2009-10-22 | [
"hep-ph"
] | B. Blok and M. Shifman |
hep-ph/9209293 | The Vector Equivalence Technique | We present the Vector Equivalence technique. This technique allows a simple
and systematic calculating of Feynman diagrams involving massive fermions at
the matrix element level. As its name suggests, the technique allows two
Lorentz four-vectors to serve as an equivalent of two external fermions. In
further calculatio... | 1992-09-29 | 2007-05-23 | [
"hep-ph"
] | E. Yehudai |
hep-ph/9209294 | Particle Width Effect on $CP$-Violating Asymmetries | $CP$-violating asymmetries calculated from the Breit-Wigner approximation for
unstable particle propagators violate $CPT$. A formalism satisfying $CP$
invariance and unitarity is presented. Applications are given to $t$ decays.
For the decay $t\to b\nu_{\tau}\bar{\tau}$ in a class of $CP$-violating models
the $CP$-viol... | 1992-09-29 | 2009-12-30 | [
"hep-ph"
] | Jiang Liu |
hep-ph/9209284 | Neutron electric dipole moment due to Higgs exchange in Left-Right
symmetric models | In this paper we study the neutron electric dipole moment (EDM) due to Higgs
boson exchange in Left-Right symmetric models. In pseudo-manifest Left-Right
symmetric models, the neutral Higgs contribution is smaller than that from the
charged Higgs. The charged Higgs contribution at the two loop level can be as
large as ... | 1992-09-28 | 2009-09-01 | [
"hep-ph"
] | D. Chang, Xiao-Gang He, W.-Y. Keung, B.H.J. McKellar, and D. Wyler |
hep-ph/9209286 | Radiative corrections in processes at the SSC | We discuss radiative corrections for interactions in the SSC environment.
Based on the theory of Yennie, Frautschi and Suura, we develop appropriate
Monte Carlo event generators to compute the background electromagnetic
radiation. Our results indicate that multiple-photon effects must be taken into
account in the study... | 1992-09-28 | 2007-05-23 | [
"hep-ph"
] | G. Siopsis, D.B. DeLaney, S. Jadach, Ch. Shio, and B.F.L. Ward |
hep-ph/9209287 | Summing one-loop graphs in a theory with broken symmetry | The method suggested by Lowell Brown for calculating multi-particle threshold
amplitudes is extended to the one-loop level in scalar theories with broken
reflection symmetry. A result for the threshold amplitude for multiparticle
production is derived. It is also shown that the tree-level amplitude for 2
on-mass-shell ... | 1992-09-28 | 2009-10-22 | [
"hep-ph"
] | B.H. Smith |
hep-ph/9209288 | Discrete quark-lepton symmetry need not pose a cosmological domain wall
problem | Quarks and leptons may be related to each other through a spontaneously
broken discrete symmetry. Models with acceptable and interesting collider
phenomenology have been constructed which incorporate this idea. However, the
standard Hot Big Bang model of cosmology is generally considered to eschew
spontaneously broken ... | 1992-09-28 | 2009-10-22 | [
"hep-ph"
] | H. Lew and R.R. Volkas |
hep-ph/9209285 | Planck Scale Effects on the Majoron | The hypothesis that non-perturbative gravitational effects lead to explicit
breaking of global symmetries is considered in the context of Majoron models.
We find that the nonvanishing Majoron mass generated by these effects can
overclose the universe unless the massive Majoron is unstable. The cosmological
mass density... | 1992-09-28 | 2008-11-26 | [
"hep-ph"
] | E.Kh. Akhmedov, Z.G. Berezhiani, R.N. Mohapatra and G. Senjanovic |
hep-ph/9209281 | Numerical Study of the Lowest Energy Configurations for Global
String-Antistring Pairs | We investigate the lowest energy configurations for string - antistring pairs
at fixed separations by numerically minimizing the energy. We show that for
separations smaller than a critical value, a region of false vacuum develops in
the middle due to large gradient energy density. Consequently, well defined
string - a... | 1992-09-25 | 2009-10-22 | [
"hep-ph",
"cond-mat"
] | Ajit Mohan Srivastava |
hep-ph/9209282 | Temperature Renormalization Group and Resummation | The temperature renormalization group equation (TRGE) is compared with a
diagrammatic expansion for the $(\phi^4)_4$-theory. It is found that the
one-loop TRGE resums the leading powers of temperature for the effective mass.
A two-loop contribution to TRGE is required to do the leading resummation for
the coupling cons... | 1992-09-25 | 2015-06-25 | [
"hep-ph"
] | Per Elmfors |
hep-ph/9209283 | Quantum Corrections to Deep Bags | Nontopological solitons, or ``bags,'' can arise when fermions acquire their
mass through a Yukawa coupling to some scalar field. Bags have played an
important role in models of baryons, nuclei, and more recently, in the idea
that a Higgs condensate may form around a very heavy top quark. It has been
claimed that deep b... | 1992-09-25 | 2009-10-22 | [
"hep-ph"
] | Stephen G. Naculich and Jonathan A. Bagger |
hep-ph/9209280 | Stable diquark matter ? | Two-quark correlations ({\it diquarks}) may play an important role in
hadronic physics, particularly near the deconfinement point. This opens the
possibility of a net energy gain by means of a (non-perturbative) quark pairing
effect, perheps up to stabilize diquark droplets. We address in this work the
possibility of a... | 1992-09-24 | 2009-10-22 | [
"hep-ph"
] | J.E.Horvath |
hep-ph/9209274 | Note on Tests of the Factorization Hypothesis and the Determination of
Meson Decay Constants | We discuss various tests of the factorization hypothesis making use of the
close relationship between semi-leptonic and factorized nonleptonic decay
amplitudes. It is pointed out that factorization leads to truely
model-independent predictions for the ratio of nonleptonic to semi-leptonic
decay rates, if in the nonlept... | 1992-09-24 | 2009-10-22 | [
"hep-ph"
] | Volker Rieckert |
hep-ph/9209279 | Large Penguin effects in the CP Asymmetry of B0d ->pi+pi- | Penguin effects in the CP asymmetries of $B^0_d\rightarrow \pi^+\pi^-$ ,
$\bd\rightarrow\rho^{\pm}\pi^{\mp}$ and $\bd\rightarrow a^{\pm}_1 \pi^{\mp}$
are studied as function of the CKM unitarity triangle $\alpha$. Despite a
fairly small penguin amplitude, it leads to quite sizable uncertainties in the
determination of ... | 1992-09-24 | 2010-11-01 | [
"hep-ph"
] | M. Gronau |
hep-ph/9209278 | On Testing V-A in Lambda_b Decays | We comment on a recent suggestion by Amundson, Rosner, Worah and Wise to test
the chirality of the $b$-quark decay coupling via polarized $\Lambda_b$ baryons
produced in $e^+e^-\rightarrow Z\rightarrow \Lambda_b +X$. We study the effect
of contributions from an amplitude in which a right-handed $b$ to $c$ current
coupl... | 1992-09-24 | 2009-10-22 | [
"hep-ph"
] | M. Gronau and S. Wakaizumi |
hep-ph/9209273 | Feynman Parametrization and the Degenerate Electron Gas | We give an alternate derivation of Weldon's formula for combining products of
factors with non identical analytic behavior. While such a formula would appear
to be useful in finite temperature calculations, we give an example of a zero
temperature calculation, namely, the degenerate electron gas, to justify the
result. | 1992-09-24 | 2011-04-12 | [
"hep-ph",
"hep-th"
] | Paulo F. Bedaque and Ashok Das |
hep-ph/9209276 | Non-Abelian Boltzmann Equation for Mixing and Decoherence | We consider particle oscillations and their damping in second-quantized form.
We find that the damping or "decoherence" may be described by a Boltzmann-like
collision integral with "non-abelian blocking factors" (fermions). Earlier
results are generalized in that the momentum degrees of freedom are included
and that th... | 1992-09-24 | 2008-11-26 | [
"hep-ph",
"astro-ph"
] | G. Raffelt, G. Sigl, and L. Stodolsky |
hep-ph/9209275 | Soliton Structure of Heavy Baryons | Heavy-quark baryons are described as a bound heavy-meson-soliton system in a
Lagrangian that combines chiral symmetry and heavy-quark symmetry. We introduce
a ``Wess-Zumino type" term and show that it dominates the binding of a heavy
meson to a soliton. The connection between this model and the Callan-Klebanov
model is... | 1992-09-24 | 2007-05-23 | [
"hep-ph"
] | D.-P. Min, Y. Oh, B.-Y. Park and M. Rho |
hep-ph/9209272 | Chiral effective action with heavy quark symmetry | We derive an effective action combining chiral and heavy quark symmetry,
using approximate bosonization techniques of QCD. We explicitly show that the
heavy-quark limit is compatible with the large $N_c$ (number of color) limit in
the meson sector, and derive specific couplings between the light and heavy
mesons ($D$, ... | 1992-09-24 | 2009-10-22 | [
"hep-ph"
] | M. A. Nowak, M. Rho, I. Zahed |
hep-ph/9209277 | The Isgur-Wise Function to $O(\alpha_s)$ from Sum Rules in the Heavy
Quark Effective Theory | Radiative corrections to both perturbative and non-perturbative contributions
are added to existing calculations of the Isgur-Wise function $\xi_{IW}$. To
this end, we develop a method for calculating two-loop integrals in the heavy
quark effective theory involving two different scales. The inclusion of
$O(\alpha_s)$ t... | 1992-09-24 | 2010-11-01 | [
"hep-ph"
] | E. Bagan, P. Ball, P. Gosdzinsky |
hep-ph/9209270 | Comment on "Summing One-Loop Graphs at Multi-Particle Threshold" | The propagator of a virtual $\phi$-field with emission of $n$ on-mass-shell
particles all being exactly at rest is calculated at the tree-level in $\lambda
\phi^4$ theory by directly solving recursion equations for the sum of Feynman
graphs. It is shown that the generating function for these propagators is
equivalent t... | 1992-09-23 | 2009-10-22 | [
"hep-ph"
] | M.B. Voloshin |
hep-ph/9209271 | QCD Sum Rule Analysis of the Subleading Isgur-Wise Form Factor
$\chi_2(v\cdot v')$ | We present a QCD sum rule calculation of the spin-symmetry violating
universal function $\chi_2(v\cdot v')$, which appears at order $1/m_Q$ in the
heavy quark expansion of meson form factors. This function vanishes in the
standard approximation, where radiative effects are neglected. For the first
time, the complete se... | 1992-09-23 | 2010-11-01 | [
"hep-ph"
] | M. Neubert, Z. Ligeti and Y. Nir |
hep-ph/9209269 | Second Order Power Corrections in the Heavy Quark Effective Theory II.
Baryon Form Factors | The analysis of $1/m_Q^2$ corrections of the previous paper is extended to
the semileptonic decays of heavy baryons. We focus on the simplest case, the
ground state $\Lambda_Q$ baryons, in which the light degrees of freedom are in
a state of zero total angular momentum. The formalism, while identical in
spirit, is cons... | 1992-09-23 | 2011-05-05 | [
"hep-ph"
] | Adam F. Falk and Matthias Neubert |
hep-ph/9209268 | Second Order Power Corrections in the Heavy Quark Effective Theory I.
Formalism and Meson Form Factors | In the heavy quark effective theory, hadronic matrix elements of currents
between two hadrons containing a heavy quark are expanded in inverse powers of
the heavy quark masses, with coefficients that are functions of the kinematic
variable $v\cdot v'$. For the ground state pseudoscalar and vector mesons, this
expansion... | 1992-09-23 | 2009-10-22 | [
"hep-ph"
] | Adam F. Falk and Matthias Neubert |
hep-ph/9209267 | CP violation in top pair production at an e^+e^- collider | We investigate a possible CP violating effect in $e^+e^-$ annihilation into
$t\bar t$ top quark pairs. As an illustrative example, we assume the source of
the CP nonconservation is in the Yukawa couplings of a neutral Higgs boson
which contain both scalar and pseudoscalar pieces. One of the interesting
observable effec... | 1992-09-23 | 2007-05-23 | [
"hep-ph"
] | Darwin Chang, Wai-Yee Keung, and Ivan Phillips |
hep-ph/9209266 | Nrqed in Bound States: Applying Renormalization to an Effective Field
Theory | This is a pedagogical introduction to NRQED, a low enery approximation of QED
which can be made to reproduce QED to an arbitrary precision. It is especially
useful when applied to nonrelativistic bound states. We start by explaining why
QED is so difficult to apply to nr bound states, why NRQED makes it much
simpler an... | 1992-09-22 | 2007-05-23 | [
"hep-ph"
] | Patrick Labelle |
hep-ph/9209263 | Heavy Quark Symmetry Violation in Semileptonic Decays of D Mesons | The decays of $D$ mesons to $K l \nu$ and $K^* l \nu$ final states exhibit
significant deviations from the predictions of heavy-quark symmetry, as one
might expect since the strange quark's mass is of the same order as the QCD
scale. Nonetheless, in order to understand where the most significant effects
might lie for h... | 1992-09-22 | 2009-10-22 | [
"hep-ph"
] | James F. Amundson and Jonathan L. Rosner |
hep-ph/9209265 | The 3-graviton vertex function in thermal quantum gravity | The high temperature limit of the 3-graviton vertex function is studied in
thermal quantum gravity, to one loop order. The leading ($T^4$) contributions
arising from internal gravitons are calculated and shown to be twice the ones
associated with internal scalar particles, in correspondence with the two
helicity states... | 1992-09-22 | 2009-10-22 | [
"hep-ph"
] | F. T. Brandt and J. Frenkel |
hep-ph/9209264 | Exclusive heavy meson pair production by $\gamma\gamma$ collision in
heavy quark effective theory | The spin and flavor symmetries of the heavy quark effective theory are
employed to discuss the exclusive cross sections for pair production of heavy
mesons in photon-photon collision. The ratios of the exclusive cross sections
for heavy mesons are obtained explicitly and the validity of results is
discussed. | 1992-09-22 | 2009-10-22 | [
"hep-ph"
] | S. Y. Choi and H. S. Song |
hep-ph/9209261 | Radiative Semileptonic Kaon Decays | We evaluate the matrix elements for the radiative kaon decays $K^+ \to
l^+\nu_l\gamma$, $l^+ \nu_l l'^+ l'^-$ and $K \to \pi l \nu_l\gamma$ \ ($l,\ l'
= e,\mu$) to next-to-leading order in chiral perturbation theory. We calculate
total rates and rates with several kinematical cuts and confront the results
with existing... | 1992-09-21 | 2011-09-29 | [
"hep-ph"
] | J. Bijnens, G. Ecker and J. Gasser |
hep-ph/9209260 | CP Violating Form Factors for Three Gauge Boson Vertex in the Two Higgs
Doublet and Left-Right symmetric Models | In this paper we calculate the one loop contributions to the CP violating
three gauge boson couplings in two-Higgs doublet and Left--Right symmetric
models. In the two-Higgs doublet model only a P conserving and CP violating
coupling is generated, and it can be large as $10^{-3}$. In the Left--Right
symmetric model bot... | 1992-09-21 | 2010-11-01 | [
"hep-ph"
] | X. G. He, J. P. Ma and B. H. J. McKellar |
hep-ph/9209262 | Chiral Lagrangians for Radiative Decays of Heavy Hadrons | The radiative decays of heavy mesons and heavy baryons are studied in a
formalism which incorporates both the heavy quark symmetry and the chiral
symmetry. The chiral Lagrangians for the electromagnetic interactions of heavy
hadrons consist of two pieces: one from gauging electromagnetically the
strong-interaction chir... | 1992-09-21 | 2009-10-22 | [
"hep-ph"
] | H.Y. Cheng, C.Y. Cheung, G.L. Lin, Y.C. Lin, T.M. Yan, and H.L. Yu |
hep-ph/9209257 | Three-Body Interactions Among Nucleons and Pions | A chiral invariant effective Lagrangian may be used to calculate the
three-body interactions among low-energy pions and nucleons in terms of known
parameters. This method is illustrated by the calculation of the pion-nucleus
scattering length. | 1992-09-20 | 2009-10-22 | [
"hep-ph",
"nucl-th"
] | Steven Weinberg |
hep-ph/9209258 | Collapsing Sub-Critical Bubbles | In the standard scenario, the electroweak phase transition is a first order
phase transition which completes by the nucleation of critical bubbles.
Recently, there has been speculation that the standard picture of the
electroweak phase transition is incorrect. Instead, it has been proposed that
throughout the phase tra... | 1992-09-20 | 2009-10-22 | [
"hep-ph"
] | Greg W. Anderson |
hep-ph/9209259 | Electric Charge Quantization | Experimentally it has been known for a long time that the electric charges of
the observed particles appear to be quantized. An approach to understanding
electric charge quantization that can be used for gauge theories with explicit
$U(1)$ factors -- such as the standard model and its variants -- is
pedagogically revie... | 1992-09-20 | 2008-11-26 | [
"hep-ph"
] | R. Foot, H. Lew and R. R. Volkas |
hep-ph/9209255 | Technicolor Theories with Negative S | We show that the pseudo Nambu--Goldstone boson contribution to the
Peskin--Takeuchi electroweak parameter $S$ can be negative in a class of
technicolor theories. This negative contribution can be large enough to cancel
the positive techni-hadron contribution, showing that electroweak precision
tests alone cannot be use... | 1992-09-19 | 2009-09-15 | [
"hep-ph"
] | Markus A. Luty and Raman Sundrum |
hep-ph/9209256 | Role of Light Vector Mesons in the Heavy Particle Chiral Lagrangian | We give the general framework for adding "light" vector particles to the
heavy hadron effective chiral Lagrangian. This has strong motivations both from
the phenomenological and aesthetic standpoints. An application to the already
observed $D \rightarrow \overbar{K^*} $ weak transition amplitude is discussed. | 1992-09-19 | 2010-11-01 | [
"hep-ph"
] | J. Schechter and A. Subbaraman |
hep-ph/9209254 | Can a strongly interacting Higgs boson rescue SU(5)? | Renormalization group analyses show that the three running gauge coupling
constants of the Standard Model do not become equal at any energy scale. These
analyses have not included any effects of the Higgs boson's self-interaction.
In this paper, I examine whether these effects can modify this conclusion. | 1992-09-18 | 2009-10-22 | [
"hep-ph"
] | Matthew H. Austern |
hep-ph/9209251 | Tau Signals of R-parity breaking at LEP 200 | The detectability at LEP 200 of explicit $R$-parity breaking by tau-number
$(L_\tau)$ violating operators is considered. The assumption of
$L_\tau$-violation is motivated by the relative lack of constraints on such
couplings but similar considerations apply to explicit $L_e$- or
$L_\mu$-violation. The $LSP$, now unstab... | 1992-09-18 | 2009-10-22 | [
"hep-ph"
] | Rohini M. Godbole, Probir Roy and Xerxes Tata |
hep-ph/9209250 | Precise predictions for mt, Vcb and tan | The fermion mass and mixing angle predictions of a recently proposed
framework are investigated for large b and $\tau$ Yukawa couplings. A new
allowed region of parameters is found for this large $\tan \beta$ case. The two
predictions which are substantially altered, $m_t$ and $\tan \beta$, are
displayed, including the... | 1992-09-18 | 2010-11-01 | [
"hep-ph"
] | Greg W. Anderson, Stuart Raby, Savas Dimopoulos, and Lawrence Hall |
hep-ph/9209253 | Thermal Bosonic Green Functions Near Zero Energy (6 characters removed
for email) | The properties of the various types of bosonic Green functions at finite
temperature in the zero energy limit are considered in the light of recent
work. | 1992-09-18 | 2015-06-25 | [
"hep-ph"
] | T.S. Evans |
hep-ph/9209252 | A New Time Contour for Equilibrium Real-Time Thermal Field Theories (7
characters altered for email) | A new time contour is used to derive real-time thermal field theory. Unlike
previous path integral approaches, no contributions to the generating
functional are dropped. | 1992-09-18 | 2009-12-30 | [
"hep-ph"
] | T.S. Evans |
hep-ph/9209246 | Vortex Production in a First Order Phase-Transition at Finite
Temperature | We simulate the production of vortices in a first order phase transition at
finite temperature. The transition is carried out by randomly nucleating
critical bubbles and the effects of thermal fluctuations (which could be
relevant for vortex production) are represented by randomly nucleating
subcritical bubbles. Our re... | 1992-09-17 | 2016-09-01 | [
"hep-ph",
"cond-mat"
] | Sumantra Chakravarty and Ajit Mohan Srivastava |
hep-ph/9209247 | Estimates with an Effective Chiral Lagrangian for Heavy Mesons | On the basis of an effective lagrangian incorporating approximate chiral
symmetry and heavy-quark spin and flavor symmetries, and by use of information
on leptonic decays, we estimate the effective $D^\star D\pi$ coupling. | 1992-09-17 | 2010-11-01 | [
"hep-ph"
] | R. Casalbuoni, A. Deandrea, N. Di Bartolomeo, R. Gatto, F. Feruglio,
G. Nardulli |
hep-ph/9209248 | Light Vector Resonances in the Effective Chiral Lagrangian for Heavy
Mesons | We modify a chiral effective lagrangian recently suggested to describe
interactions of the light pseudoscalars with mesons containing a heavy quark,
so as to incorporate light vector resonances, such as $\rho$, etc. The
modification uses the hidden gauge symmetry approach. As a preliminary example
we present an applica... | 1992-09-17 | 2009-10-22 | [
"hep-ph"
] | R.Casalbuoni, A.Deandrea, N.Di Bartolomeo, R.Gatto, F.Feruglio,
G.Nardulli |
hep-ph/9209249 | Exclusive Rare Decay $B\rightarrow K^{\ast}\gamma$ | We show that the exclusive decay $B\rightarrow K^{\ast}\gamma$ can be related
to the semileptonic decay $B\rightarrow\rho e\bar{\nu}$ using heavy-quark
symmetry and $SU(3)$ flavor symmetry. A direct measurement of the
$q^{2}$-spectrum for the semileptonic decay can provide relevant information
for the exclusive rare de... | 1992-09-17 | 2007-05-23 | [
"hep-ph"
] | Patrick J. O'Donnell and Humphrey K.K. Tung |
hep-ph/9209245 | Supersymmtric Baryogenesis | Requiring that the baryon number of the universe be generated by anomalous
electroweak interactions places strong constraints on the minimal
supersymmetric standard model. In particular, the electric dipole moment of the
neutron must be greater than $10^{-27}$e-cm. Improvement of the current
experimental bound on the n... | 1992-09-16 | 2010-11-01 | [
"hep-ph"
] | A. Cohen and A. Nelson |
hep-ph/9209244 | Physics from Vacuum Alignment in A Technicolor Model | I describe a technicolor model (without walking) of all interactions up to
energies of the order of 1000~TeV. The low energy extended technicolor model
has the CTSM form. But at intermediate energy scales, additional interactions
are required to give the KM mixing. I discuss the characteristic flavor
changing neutral c... | 1992-09-16 | 2009-09-11 | [
"hep-ph"
] | Howard Georgi |
hep-ph/9209243 | The $\mu$ Problem and the Invisible Axion | The $\mu$ term in the supersymmetric standard model is known to" be nonzero.
Supersymmetry breaking at the intermediate scale may provide the needed $\mu$
term and the invisible axion. A possible solution of this $\mu$ problem in
superstring models is also discussed. | 1992-09-16 | 2009-10-22 | [
"hep-ph"
] | Jihn E. Kim |
hep-ph/9209239 | Electromagnetic Interactions in Heavy Hadron Chiral Theory | Electromagnetic interactions are incorporated into Heavy Hadron Chiral
Perturbation Theory. Short and long distance magnetic moment contributions to
the chiral Lagrangian are identified, and $M1$ radiative decays of heavy vector
mesons and sextet baryons are studied. Using recent CLEO $D^*$ branching
fraction ratio dat... | 1992-09-15 | 2009-09-11 | [
"hep-ph"
] | Peter Cho and Howard Georgi |
hep-ph/9209240 | Summing One-Loop Graphs at Multi-Particle Threshold | It is shown that the technique recently suggested by Lowell Brown for summing
the tree graphs at threshold can be extended to calculate the loop effects.
Explicit result is derived for the sum of one-loop graphs for the amplitude of
threshold production of $n$ on-mass-shell particles by one virtual in the
unbroken $\la... | 1992-09-15 | 2009-12-30 | [
"hep-ph"
] | M.B. Voloshin |
hep-ph/9209236 | Cosmic Neutrinos from Unstable Relic Particles | We derive constraints on the relic abundance of a generic particle of mass
$\sim~1-10^{14}$ TeV which decays into neutrinos at cosmological epochs, using
data from the Fr\'ejus and IMB nucleon decay detectors and the Fly's Eye air
shower array. The lifetime of such unstable particles which may constitute the
dark matte... | 1992-09-15 | 2011-02-16 | [
"hep-ph"
] | P. Gondolo, G. Gelmini and S. Sarkar |
hep-ph/9209241 | Radiative $D^*$ Decay Using Heavy Quark and Chiral Symmetry | The implications of chiral $SU(3)_L \times SU(3)_R$ symmetry and heavy quark
symmetry for the radiative decays $D^{*0}\to D^0\gamma$, $D^{*+}\to D^+\gamma$,
and $D_s^*\to D_s\gamma$ are discussed. Particular attention is paid to $SU(3)$
violating contributions of order $m_q^{1/2}$. Experimental data on these
radiative ... | 1992-09-15 | 2008-11-26 | [
"hep-ph"
] | J.F. Amundson, C.G. Boyd, E. Jenkins, M. Luke, A.V. Manohar, J.L.
Rosner, M.J. Savage and M.B. Wise |
hep-ph/9209237 | Anomalous Gauge-Boson Couplings at Hadron Supercolliders | We discuss anomalous gauge boson couplings at hadron supercolliders. We
review the usual description of these couplings, as well as the studies of a
strongly interacting electroweak symmetry breaking sector. We present an
effective field theory formulation of the problem that relates the two
subjects, and that allows a... | 1992-09-15 | 2009-10-22 | [
"hep-ph"
] | G. Valencia |
hep-ph/9209242 | Meson Mass Splittings in the Nonrelativistic Model | Mass splittings between isodoublet meson pairs and between $0^{-}$ and
$1^{-}$ mesons of the same valence quark content are computed in a detailed
nonrelativistic model. The field theoretic expressions for such splittings are
shown to reduce to kinematic and Breit-Fermi terms in the nonrelativistic
limit. Algebraic res... | 1992-09-15 | 2009-10-22 | [
"hep-ph"
] | Richard F. Lebed |
hep-ph/9209238 | Primordial magnetic fields from pseudo-Goldstone bosons | The existence of large-scale magnetic fields in galaxies is well established,
but there is no accepted mechanism for generating a primordial field which
could grow into what is observed today. We discuss a model which attempts to
account for the necessary primordial field by invoking a pseudo-Goldstone boson
coupled to... | 1992-09-15 | 2011-05-05 | [
"hep-ph",
"astro-ph"
] | W. Daniel Garretson, George B. Field, and Sean M. Carroll
(Harvard-Smithsonian Center for Astrophysics) |
hep-ph/9209232 | Supersymmetric Grand Unified Theories: Two Loop Evolution of Gauge and
Yukawa Couplings | We make a numerical study of gauge and Yukawa unification in supersymmetric
grand unified models and examine the quantitative implications of fermion mass
ans\"{a}tze at the grand unified scale. Integrating the renormalization group
equations with $\alpha _1(M_Z)$ and $\alpha _2(M_Z)$ as inputs, we find $\alpha
_3(M_Z)... | 1992-09-14 | 2009-09-15 | [
"hep-ph"
] | V. Barger, M. S. Berger and P. Ohmann |
hep-ph/9209235 | The Measure of Strong CP Violation | We investigate a controversial issue on the measure of CP violation in strong
in teractions. In the presence of nontrivial topological gauge configurations,
the $\theta$-term in QCD has a profound effect: it breaks the CP symmetry. The
CP-violating amplitude is shown to be determined by the vacuum tunneling
process, wh... | 1992-09-14 | 2010-11-01 | [
"hep-ph"
] | Zheng Huang |
hep-ph/9209234 | On the Anomalous Discrete Symmetry | We examine an interesting scenario to solve the domain wall problem recently
suggested by Preskill, Trivedi, Wilczek and Wise. The effective potential is
calculated in the presence of the QCD axial anomaly. It is shown that some
discrete symmetries such as CP and Z_2 can be anomalous due to a so-called
$K$-term induced... | 1992-09-14 | 2010-11-01 | [
"hep-ph"
] | Zheng Huang |
hep-ph/9209233 | On the Finite Temperature Effective Potential in Scalar QED with N
Flavors | The effective potential of scalar quantum electrodynamics with N flavors of
complex scalar fields is studied, by performing a self consistent 1/N expansion
up to next to leading order in $1/N$. Starting from the broken phase at zero
temperature, the theory exhibits a phase transition to the symmetric phase at
some fini... | 1992-09-14 | 2008-11-26 | [
"hep-ph"
] | M. Carena and C.E.M. Wagner |
hep-ph/9209231 | Rare Kaon Decays in the $1/N_c$-Expansion | We study the unknown coupling constants that appear at order $p^4$ in the
Chiral Perturbation Theory analysis of $K \to \pi \gamma^* \to \pi l^+ l^-$,
$K^{+-} \to \pi^{+-} \gamma \gamma$ and $K \to \pi \pi \gamma$ decays. To that
end, we compute the chiral realization of the $\Delta S \, = \, 1$ Hamiltonian
in the fram... | 1992-09-14 | 2008-11-26 | [
"hep-ph"
] | C. Bruno and J. Prades |
hep-ph/9209230 | Can perturbative QCD predict a substantial part of diffractive LHC/SSC
physics? | We examine a model of hadronic diffractive scattering which interpolates
between perturbative QCD and non-perturbative fits. We restrict the
perturbative QCD resummation to the large transverse momentum region, and use a
simple Regge-pole parametrization in the infrared region. This picture allows
us to account for exi... | 1992-09-13 | 2009-10-22 | [
"hep-ph"
] | J.R. Cudell and B. Margolis |
hep-ph/9209226 | On a Noncommutative Extension of Electrodynamics | The Maxwell vector potential and the Dirac spinor used to describe the
classical theory of electrodynamics both have components which are considered
to be ordinary smooth functions on space-time. We reformulate electrodynamics
by adding an additional structure to the algebra of these functions in the form
of the algebr... | 1992-09-11 | 2007-05-23 | [
"hep-ph"
] | J. Madore |
hep-ph/9209229 | Baryon Number Diffusion and Instabilities in the Quark/Hadron Phase
Transition | Hadron bubbles that nucleate with radius $R_{nuc}$ in a quark sea (if the
phase transition is first order) are shown to be unstable to the growth of
nonspherical structure when the bubble radii exceed a critical size of $20 -
10^3$ $R_{nuc}$. This instability is driven by a very thin layer of slowly
diffusing excess ba... | 1992-09-11 | 2007-05-23 | [
"hep-ph"
] | Fred C. Adams, Katherine Freese, and J. S. Langer |
hep-ph/9209227 | The 3d effective field theory of the high temperature abelian Higgs
model | We study the 3d effective theory of the high T Abelian Higgs model with N
real scalars and gauge and scalar couplings denoted g and $\lambda$,
respectively. We find for the three cases a) $6g^2/\lambda =0(1)$, b)
$6g^2/\lambda=0(N)$ and c) $6g^2/\lambda=O(N^{2\over3})$ the following results:
a) The O(N)+O(1) potential ... | 1992-09-11 | 2016-09-01 | [
"hep-ph"
] | Vidyut Jain |
hep-ph/9209228 | Color--Sextet Quark Condensation In QCD | We present the minimal sextet--quark condensation model as an attractive
alternative to the standard model. The model is constructed by a simple and
natural extension beyond the standard model and has many new interesting
features some of which can be tested readily at the existing colliders. A
crucial test may be a sh... | 1992-09-11 | 2007-05-23 | [
"hep-ph"
] | Kyungsik Kang and Alan R. White (Brown Univeristy) |
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