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/9412300 | Probing the Weak Boson Sector in $\gamma e\rightarrow Ze$ | We study possible deviations from the standard model in the reaction $\gamma
e\rightarrow Ze$ at a 500 GeV $e^+e^-$ collider. As a photon source we use a
laser backscattered photon beam. We investigate the most general $\gamma
Z\gamma$ and $\gamma ZZ$ vertices including operators up to
energy-dimension-six which are Lo... | 1994-12-15 | 2010-11-01 | [
"hep-ph"
] | S.Y. Choi |
hep-ph/9412299 | Strong Corrections to Inclusive B to X tau nu Decays | We calculate the $\alpha_s$ corrections to the form factors which
parameterize the hadronic tensor relevant for inclusive semileptonic $B
\rightarrow X \tau\bar\nu_{\tau}$ and $\Lambda_b \rightarrow X
\tau\bar\nu_{\tau}$ decays. We apply our results to the double differential
decay rates for the decays of $B$ mesons an... | 1994-12-15 | 2008-02-03 | [
"hep-ph"
] | C.G. Boyd, Z. Guralnik, M. Schmaltz, F.J. Vegas |
hep-ph/9412304 | New fermions and a vector-like third generation in $SU(3)_c\otimes
SU(3)_L\otimes U(1)_N$ models | We study two 3-3-1 models with i) five (four) charge 2/3 ($-1/3$) quarks and,
ii) four (five) charge 2/3 ($-1/3$) quarks and a vector-like third generation.
Possibilities beyond these models are also briefly considered. | 1994-12-15 | 2014-11-17 | [
"hep-ph"
] | V. Pleitez |
hep-ph/9412296 | A Model Independent Analysis of Solar Neutrino Data | We present the results of a solar model independent analysis of the existing
solar neutrino data in the case of $\nu_{e}\to\nu_{\mu(\tau)}$ MSW transitions.
We considered two cases. In the first case no assumptions on the values of the
total fluxes of neutrinos from all reactions have been made. In the second case
we c... | 1994-12-14 | 2007-05-23 | [
"hep-ph"
] | S.M. Bilenky and C. Giunti |
hep-ph/9412297 | Supersymmetric Unification | The measured value of the weak mixing angle is, at present, the only precise
experimental indication for physics beyond the Standard Model. It points in the
direction of Unified Theories with Supersymmetric particles at accessible
energies. We recall the ideas that led to the construction of these theories in
1981. | 1994-12-14 | 2009-09-25 | [
"hep-ph",
"hep-th"
] | Savas Dimopoulos |
hep-ph/9412295 | Alpha_s from Tau Decays | We review the present status in the determination of the $accurate$ value of
$\alpha_s$ from $\tau$-decays, where we discuss in detail the different sources
of theoretical errors. | 1994-12-14 | 2009-10-28 | [
"hep-ph"
] | Stephan Narison (Univ. Montpellier) |
hep-ph/9412293 | Isgur-Wise Function and $V_{cb}$ from Bethe-Salpeter Equations | We calculate the Isgur-Wise function from the solutions of the Bethe-Salpeter
equations. The shape of the Isgur-Wise function thus calculated is a prediction
of the Bethe-Salpeter equations and does not depend on undetermined parameters.
We develop an analytical approximation to our Isgur-Wise function in the form
$\xi... | 1994-12-14 | 2010-11-01 | [
"hep-ph",
"nucl-th"
] | A.Abd El-Hady, K.S.Gupta, A.J.Sommerer, J.Spence and J.P.Vary |
hep-ph/9412292 | Threshold production of charmed and B mesons in e+e- annihilation | A simple extension of the QCD inspired potential model which includes
dynamical quarks first proposed by Eichten et al. is remarkably successful in
accounting both for the observed narrow state heavy quarkonium spectroscopy and
experimental data on threshold production of charmed and B mesons in e+e-
annihilation. In a... | 1994-12-14 | 2007-05-23 | [
"hep-ph",
"hep-ex"
] | Nina Byers (UCLA) |
hep-ph/9412298 | Dill: An Algorithm and a Symbolic Software Package for Doing Classical
Supersymmetry Calculations | An algorithm is presented that formalizes different steps in a classical
Supersymmetric (SUSY) calculation. Based on the algorithm Dill, a symbolic
software package, that can perform the calculations, is developed in the
Mathematica programming language. While the algorithm is quite general, the
package is created for ... | 1994-12-14 | 2009-10-28 | [
"hep-ph"
] | Vladan Lucic (Northeastern University) |
hep-ph/9412294 | Gluon Radiation in t\bar{t} Production at the Tevatron p\bar{p} Collider | We present a complete calculation of the matrix elements for the processes $q
\bar q, gg \to b W^+ \bar b W^- g$ and $qg \to b W^+ \bar b W^- q$ which are
relevant for the study of events with an additional jet in $t \bar t$
production at the Tevatron $p \bar p $ collider. Our calculation includes (i)
the contributions... | 1994-12-14 | 2009-10-28 | [
"hep-ph"
] | Lynne H. Orr, T. Stelzer, W.J. Stirling |
hep-ph/9412281 | Low Energy Thresholds and the Renormalization Group in the MSSM | We derive the 1-loop Renormalization Group Equations for the parameters of
the Minimal Supersymmetric Standard Model (MSSM) taking into account the
successive decoupling of each sparticle below its threshold. This is realized
by a step function at the level of each graph contributing to the
Renormalization Group Equati... | 1994-12-13 | 2009-10-28 | [
"hep-ph"
] | A.B.Lahanas and K.Tamvakis |
hep-ph/9412286 | QED Radiative Corrections for Parton Distributions | I discuss radiative corrections due to the emission of photons from quarks
which contribute to deep inelastic lepton--nucleon scattering as well as to
$pp$ collisions at high energies. These corrections are dominated by quark-mass
singularities which have to be absorbed into the parton distribution functions.
Observabl... | 1994-12-13 | 2014-11-17 | [
"hep-ph"
] | H. Spiesberger |
hep-ph/9412279 | Lattice QCD | The status of Lattice QCD is reviewed with respect to results that are
relevant to Standard Model phenomenology. I argue that in a few simple cases
all (or almost all) systematic errors from the lattice calculation are under
control. Lattice QCD calculations of quarkonia ($\bb$ and $\cc$) have yielded
precise determina... | 1994-12-13 | 2008-02-03 | [
"hep-ph",
"hep-lat"
] | Aida X. El-Khadra (Ohio State University) |
hep-ph/9412289 | Angular Distributions of Drell-Yan Lepton Pairs at the Tevatron: Order
$\alpha_s^2$ Corrections and Monte Carlo Studies | We investigate the angular distribution of the lepton pair in the process $p
\bar{p} \rightarrow \gamma^{\ast} + X \rightarrow \ell^+\ell^- + X$, where the
virtual photon is produced at high transverse momentum. The angular
distribution of the leptons is very sensitive to possible nonperturbative
effects, such as a non... | 1994-12-13 | 2009-10-28 | [
"hep-ph"
] | E. Mirkes and J. Ohnemus |
hep-ph/9412282 | Novel Pion Electroproduction Low-Energy Theorems | We present novel low--energy theorems for the P--wave multipoles $2M_{1+} +
M_{1-}$, $M_{1+} -M_{1-}$, $E_{1+}$ and $L_{1\pm}$ for neutral pion
electroproduction off protons. These should be very useful for the analysis of
existing or future threshold data. | 1994-12-13 | 2009-10-28 | [
"hep-ph",
"nucl-th"
] | V. Bernard, N. Kaiser and Ulf-G. Mei{\ss}ner |
hep-ph/9412290 | Searching for Relic Neutralinos | Theoretical expectations for direct and indirect searches for relic
neutralinos are presented. Complementarity among various investigation means is
discussed in connection with the values of the neutralino relic abundance. | 1994-12-13 | 2009-09-25 | [
"hep-ph",
"astro-ph"
] | A.Bottino, N.Fornengo, G.Mignola and S.Scopel |
hep-ph/9412291 | Electroweak corrections to the toponium decay width | We discuss one-loop electroweak corrections to the decay width of toponium.
We calculate the energy-level shifts by expanding around the solution of the
Bethe-Salpeter equation in the instantaneous approximation, in analogy with the
positronium case. We show that first-order electroweak effects are suppressed
by at lea... | 1994-12-13 | 2009-10-28 | [
"hep-ph"
] | George Siopsis (The University of Tennessee, Knoxville) |
hep-ph/9412284 | Weak Decays of $B$ Mesons and Lattice QCD | After a pedagogical introduction to the calculation of weak matrix elements
on the lattice, I review some of the lattice's most recent predictions
concerning the weak decays of $B$-mesons. Amongst the topics covered are the
determinations of the leptonic decay constant $f_B$, of the form factors
relevant for semi-lepto... | 1994-12-13 | 2009-03-20 | [
"hep-ph",
"hep-lat"
] | Laurent Lellouch |
hep-ph/9412283 | New Quark Distributions and Semi-Inclusive Electroproduction on
Polarized Nucleons | The quark-parton model calculation including the effects of intrinsic
transverse momentum and of all six twist-two distribution functions of quarks
in polarized nucleons is performed. It is demonstrated that new twist-two quark
distribution functions and polarized quark fragmentation functions can be
investigated in se... | 1994-12-13 | 2009-07-09 | [
"hep-ph"
] | Aram Kotzinian |
hep-ph/9412285 | Macroscopic Chromodynamics of a Confining Medium | A nonminimal interaction of the gluon field with a massive antisymmetric
tensor order parameter is shown to yield a vanishing dielectric function at
tree level. The London-type description of this perfect diaelectric suggests a
tractable non-Abelian chromodynamics of the Ginzburg-Landau type which is
suitable for descr... | 1994-12-13 | 2011-04-20 | [
"hep-ph",
"nucl-th"
] | Jiri Hosek, Georges Ripka |
hep-ph/9412288 | The Problem of the Double Time-Ordered Operator Product Calculation in
the Nonequilibrium Quantum Field Theory | It is shown that calculation of the operator's groups product with the
independent time ordering procedure in each one is important for some problems
in the nonequilibrium quantum field theory at finite temperature. This problem
is solved in terms of path integrals by means of time-integration contour
transformation. A... | 1994-12-13 | 2009-09-25 | [
"hep-ph"
] | Tengiz M. Bibilashvili |
hep-ph/9412287 | Evolution of the spin of the nucleon | We compare momentum sum rules from unpolarized electroproduction and the spin
sum rule for $g_1$ in polarized electroproduction, and their $Q^2$ evolution in
the framework of the operator product expansion. Second order effects in
$\alpha_s$ are included. We show that in comparing the evolution of the spin
sum rule wit... | 1994-12-13 | 2009-10-28 | [
"hep-ph"
] | P.J. Mulders and S.J. Pollock |
hep-ph/9412272 | Squark Production at the Tevatron | We have determined the QCD corrections to the production of squark-antisquark
pairs in $p\bar p$ collisions at the Tevatron. If the next-to-leading order
corrections are taken into account, the renormalization/factorization scale
dependence of the theoretical prediction for the cross section is reduced
considerably. Th... | 1994-12-12 | 2009-10-28 | [
"hep-ph"
] | W. Beenakker, R. H\"opker, M. Spira and P.M. Zerwas |
hep-ph/9412275 | $W^+Z$ and $W^+\gamma^*$ Backgrounds to Strong $W^+W^+$ Scattering at
the LHC | Because of inevitable blind spots at high rapidity and low transverse
momentum, the process $\overline qq \rightarrow l^+ l^- \ l^{+} \nu$ provides a
surprisingly large background to the $W^+W^+ \rightarrow l^+ \nu \ l^+ \nu$
signal associated with strong $WW$ scattering. Previous calculations of the
total background a... | 1994-12-12 | 2009-10-28 | [
"hep-ph",
"hep-ex"
] | Michael S. Chanowitz and William B. Kilgore |
hep-ph/9412276 | Minijet veto: a tool for the heavy Higgs search at the LHC | The distinct color flow of the $qq\to qqH,\; H\to W^+W^-$ process leads to
suppressed radiation of soft gluons in the central region, a feature which is
not shared by major background processes like $t\bar t$ production or $q\bar q
\to W^+W^-$. For the leptonic decay of a heavy Higgs boson, $H\to W^+W^- \to
\ell^+\nu \... | 1994-12-12 | 2009-09-25 | [
"hep-ph"
] | V. Barger, R.J.N. Phillips, and D. Zeppenfeld |
hep-ph/9412278 | Neutrino Masses | This is a review for Reports of Progress in Physics. After an introduction we
start by explaining the different neutrino masses corresponding to different
types of neutrinos, Dirac or Majorana, in section 2. In section 3 we discuss
the main elementary particle models for neutrino masses and their distinctive
phenomenol... | 1994-12-12 | 2014-11-17 | [
"hep-ph"
] | Graciela Gelmini (UCLA) and Esteban Roulet (CERN) |
hep-ph/9412273 | QCD Predictions for the Tau Hadronic Width: Determination of
alpha_s(M_\tau^2) | The total $\tau$ hadronic width can be accurately calculated using
analyticity and the operator product expansion. The theoretical analysis of
this observable is updated to include all available perturbative and
non-perturbative corrections. The experimental determination of
$\alpha_s(M_\tau^2)$ and its actual uncertai... | 1994-12-12 | 2009-10-28 | [
"hep-ph"
] | A. Pich |
hep-ph/9412280 | Simulations of Supercollider Physics | The Standard Model of particle physics makes it possible to simulate complete
events for physics signatures and their backgrounds in high energy collisions.
Knowledge of how the produced particles interact with the materials in a
detector makes it possible to simulate the response of any particular detector
design to t... | 1994-12-12 | 2009-09-25 | [
"hep-ph",
"hep-ex"
] | K.D. Lane, F.E. Paige, T. Skwarnicki, and W.J. Womersley |
hep-ph/9412274 | The Standard Model of Electroweak Interactions | What follows is an updated version of the lectures given at the CERN Academic
Training (November 1993) and at the Jaca Winter Meeting (February 1994). The
aim is to provide a pedagogical introduction to the Standard Model of
electroweak interactions. After briefly reviewing the empirical considerations
which lead to th... | 1994-12-12 | 2007-05-23 | [
"hep-ph"
] | A. Pich |
hep-ph/9412277 | Critical Behavior of a Four-Fermion Schwinger-Dyson Equation | We study the Schwinger-Dyson equation associated with a chirality- changing
fermion 4-point function in a strongly-coupled $U(1)$ gauge theory. After
making appropriate simplifications, we solve the equation numerically via a
relaxation method. Our analysis provides an estimate of the critical coupling
and it gives som... | 1994-12-12 | 2009-10-28 | [
"hep-ph",
"hep-th"
] | B. Holdom and G. Triantaphyllou (University of Toronto) |
hep-ph/9412271 | $\rho\to 4\pi$ DECAY | The decay modes $\rho^0 \to 2\pi^+ 2\pi^-$ and $\rho^0 \to 2\pi^0 \pi^+
\pi^-$ are considered in the framework of the low energy effective chiral
Lagrangian. The obtained values of the decay widths $\Gamma(\rho^0\to 2 \pi^+ 2
\pi^-)=$ $(16 \pm 1){\rm keV}$ and $\Gamma(\rho^0\to 2 \pi^0 \pi^+ \pi^-)= (6.0
\pm 0.2)$keV d... | 1994-12-10 | 2009-10-28 | [
"hep-ph"
] | S.I. Eidelman, E.A. Kuraev, Z.K. Silagadze |
hep-ph/9412269 | Heavy Mesons In A Relativistic Model | Motivated by the present interest in the heavy quark effective theory, we use
the spectator equation to treat the mesonic bound states of heavy quarks. The
kernel we use is based on scalar confining and vector Coulomb potentials. Wave
functions are treated to leading order and energies to order $1/m_Q$ in the
heavy-lig... | 1994-12-09 | 2008-11-26 | [
"hep-ph"
] | J. Zeng, J. W. Van Orden and W. Roberts |
hep-ph/9412264 | Fermi Ball Detection | The detectability of charged SLAC-bag type structures is considered. These
objects, known as Fermi balls, arise from the spontaneous symmetry breaking of
a biased discrete symmetry in the early universe. Two classes of experimental
searches are discussed. Since Fermi balls in the theoretically favoured mass
range are a... | 1994-12-09 | 2007-05-23 | [
"hep-ph"
] | Alick L. Macpherson and James L. Pinfold |
hep-ph/9412270 | Scattering from a Domain Wall in a Spontaneously Broken Gauge Theory | We study the interaction of particles with a domain wall at a
symmetry-breaking phase transition by perturbing about the domain wall
solution. We find the particulate excitations appropriate near the domain wall
and relate them to the particles present far from the wall in the uniform
broken and unbroken phases. For a ... | 1994-12-09 | 2012-08-27 | [
"hep-ph"
] | Glennys R. Farrar and John W. McIntosh, Jr |
hep-ph/9412267 | Radiative Corrections to K_l2 decays | We consider $K_{l2}$ decays to the order $O(\alpha)$. We perform a matching
calculation, using a specific model with vector meson dominance in the long
distance part and the parton model in the short distance part. By considering
the dependence on the matching scale and on the hadronic parameters, and by
comparing with... | 1994-12-09 | 2009-09-25 | [
"hep-ph"
] | Markus Finkemeier |
hep-ph/9412263 | On mean free path statistics of relativistic heavy ions in nuclear
emulsion | We survey at the general level, and in a rather wide and historical context,
some less known mathematical details of various mean free path statistics in
nuclear emulsion as applied to relativistic projectile fragmentations. A number
of comments are provided on Feller's paradox, ordered, censored, and truncated
statist... | 1994-12-09 | 2007-05-23 | [
"hep-ph"
] | Haret C. Rosu |
hep-ph/9412266 | Particle Physics Models, Topological Defects and Electroweak
Baryogenesis | We demonstrate the viability of electroweak baryogenesis scenarios in which
the necessary departure from equilibrium is realized by the evolution of a
network of topological defects. We consider several effective models of TeV
physics, each addressing a fundamental particle physics problem, and in which
the conditions ... | 1994-12-09 | 2010-11-01 | [
"hep-ph"
] | M.Trodden, A-C. Davis, R. Brandenberger |
hep-ph/9412268 | CP Violation and the Width $Z\rightarrow b\bar{b}$ | We discuss the effect of CP-violating $Zb\bar{b}$, $Zb\bar{b}G$ and
$Zb\bar{b}\gamma$ couplings on the width $\Gamma(Z\rightarrow b\bar bX)$. The
presence of such couplings leads in a natural way to an increase of this width
relative to the prediction of the standard model. Various strategies of a
direct search for suc... | 1994-12-09 | 2010-11-01 | [
"hep-ph"
] | W.Bernreuther, G.W.Botz, D.Bruss, P.Haberl, O.Nachtmann |
hep-ph/9412265 | Scale Setting in QCD and the Momentum Flow in Feynman Diagrams | We present a formalism to evaluate QCD diagrams with a single virtual gluon
using a running coupling constant at the vertices. This method, which
corresponds to an all-order resummation of certain terms in a perturbative
series, provides a description of the momentum flow through the gluon
propagator. It can be viewed ... | 1994-12-09 | 2010-11-01 | [
"hep-ph"
] | Matthias Neubert (CERN) |
hep-ph/9412258 | Electroweak theory at {\boldmath $Z^0$} and above | We present a simple method for considering radiative corrections. Precision
data are well described by an adequate Born approximation and only the first
evidence for deviations from the tree level formulas and the presence of the
loop effects emerge. | 1994-12-08 | 2007-05-23 | [
"hep-ph"
] | M. Vysotsky, ITEP, Moscow, Russia |
hep-ph/9412259 | $R$--Parity Violating SUSY or Leptoquarks: Virtual Effects in Dilepton
Production | In the Standard Model (SM), dilepton production in hadron--hadron collisions
proceeds through the conventional Drell--Yan mechanism $q \bar{q} \rightarrow
l^+ l^-$ with the exchange of a gauge boson. Some extensions of the SM contain
a quark--lepton contact interaction {\it via} a $q l \phi$ Yukawa coupling,
where $\ph... | 1994-12-08 | 2008-11-26 | [
"hep-ph"
] | Gautam Bhattacharyya, Debajyoti Choudhury and K. Sridhar |
hep-ph/9412261 | How to obtain a covariant Breit type equation from relativistic
Constraint Theory | It is shown that, by an appropriate modification of the structure of the
interaction potential, the Breit equation can be incorporated into a set of two
compatible manifestly covariant wave equations, derived from the general rules
of Constraint Theory. The complementary equation to the covariant Breit type
equation de... | 1994-12-08 | 2009-10-28 | [
"hep-ph"
] | J. Mourad and H. Sazdjian |
hep-ph/9412257 | Dimensional Reduction and Dynamical Chiral Symmetry Breaking by a
Magnetic Field in $3+1$ Dimensions | It is shown that in $3+1$ dimensions, a constant magnetic field is a catalyst
of dynamical chiral symmetry breaking, leading to generating a fermion mass
even at the weakest attractive interaction between fermions. The essence of
this effect is the dimensional reduction $D \rightarrow D-2$ ($3+1 \rightarrow
1+1$) in th... | 1994-12-08 | 2019-08-15 | [
"hep-ph",
"hep-th"
] | V.P. Gusynin, V.A. Miransky and I.A. Shovkovy |
hep-ph/9412262 | Supersymmetry Breaking Scheme and The Derivation of $M_{GUT}=10^{16}GeV$
from A String Model | We propose that a modified version of string-inspired supersymmetry breaking
schemes in \cite{wit2} and \cite{ross} may make affine level one SU(5) and
SO(10) string models with intermediate gauge symmetry breaking scale
$M_{GUT}=10^{16}GeV$ possible; doublet-triplet problem can also be solved. In
particular, we propos... | 1994-12-08 | 2008-02-03 | [
"hep-ph"
] | Rulin Xiu |
hep-ph/9412260 | Inconsistency of the SU(3)_L x U(1)_X model | Withdrawn. We thank J. T. Liu for bringing an error in the manuscript to our
attention. | 1994-12-08 | 2008-02-03 | [
"hep-ph"
] | B. Dutta and S. Willenbrock |
hep-ph/9412252 | Pseudo-Goldstone Modes in Isospin-Asymmetric Nuclear Matter | We analyze the chiral limit in dense isospin-asymmetric nuclear matter. It is
shown that the pseudo-Goldstone modes in this system are qualitatively
different from the case of isospin-symmetric matter. | 1994-12-07 | 2009-10-28 | [
"hep-ph"
] | Thomas D. Cohen and Wojciech Broniowski |
hep-ph/9412251 | Transition radiation of the neutrino magnetic moment | If the neutrino has a finite mass and a magnetic moment it would produce
transition radiation when crossing the interface between two media. We found
that the probability of transition radiation is larger by an order of magnitude
using the quantum theory than that recently reported by one of us using
classical electrod... | 1994-12-07 | 2011-07-19 | [
"hep-ph"
] | M. Sakuda and Y. Kurihara (KEK, Tsukuba, 305 Japan) |
hep-ph/9412253 | A New Scale-Dependent Cosmology with the Generalized Robertson--Walker
Metric and Einstein Equation | Based on the observed increase of $\Omega _0$ as a function of cosmic scale,
the Robertson--Walker metric and the Einstein equation are generalized so that
$ \Omega_0$, $H_0$, and the age of the Universe, $t_0$, all become functions of
cosmic scales at which we observe them. The calculated local (within our
galaxy) age... | 1994-12-07 | 2009-09-25 | [
"hep-ph",
"astro-ph",
"gr-qc"
] | C.W. Kim, A. Sinibaldi and J. Song |
hep-ph/9412256 | Parity Symmetry Restoration in Qed3 at High Temperature and Finite
Density | We investigate the properties of quantum electrodynamics $(QED_3)$ in two
spatial dimensions at finite temperature and density. The static as well as the
dynamical properties of the planar plasma are calculated using the real time
formalism of quantum field theory. It is shown, that due to the presence of the
parity br... | 1994-12-07 | 2009-10-28 | [
"hep-ph",
"cond-mat",
"hep-th"
] | Martin Klein-Kreisler and Manuel Torres |
hep-ph/9412255 | ${\cal O}(\alpha_{s})$ Spin-Dependent Weak Structure Functions | The complete next to leading logarithmic (${\cal O}(\alpha_{s})$) corrections
to the spin dependent weak deep inelastic structure functions $g_{1},g_{3}$ and
$g_{4}$, are calculated using dimensional regularization within the HVBM
method. Analysing the quark and gluon initiated contributions to these
corrections for di... | 1994-12-07 | 2010-11-01 | [
"hep-ph"
] | D. de Florian and R. Sassot |
hep-ph/9412254 | CP Violation In Hyperon Decays Due To Left-Right Mixing | We consider CP violation due to left-right mixing in a class of Left-Right
symmetric models and show that it leads to observable effects in hyperon
decays. For S-wave, the contribution to CP violating asymmetry A of the
polarization in hyperon and anti-hyperon decays is proportional to
$\epsilon'/\epsilon$. While the t... | 1994-12-07 | 2010-11-01 | [
"hep-ph"
] | Darwin Chang, Xiao-Gang He and Sandip Pakvasa |
hep-ph/9412249 | Production Mechanisms for $B_c$ Mesons in Photon--Photon Collisions | Using photon-photon collisions as a particularly transparent study case we
investigate the production mechanisms for $B_c$ mesons. In nonrelativistic
approximation and to $O(\alpha^2\alpha_s^2)$ it is shown that recombination of
$\bar{b}$- and $c$-quarks dominates by far over $\bar{b}$ and $c$
fragmentation. This domin... | 1994-12-06 | 2011-01-25 | [
"hep-ph"
] | K. Ko{\l}odziej, A. Leike, R. R\"uckl |
hep-ph/9412247 | Upper Bound on the Mass of Lightest Higgs Boson in the Supersymmetric
Majoran Model | We calculate an upper bound on the lightest Higgs boson mass in the
supersymmetric singlet majoran model containing SU(2) X U(1) singlet right
handed neutrino fields and a chiral singlet having two units of lepton number.
We show that although the singlet vacuum expectation values and supersymmetry
breaking masses do n... | 1994-12-06 | 2014-11-17 | [
"hep-ph"
] | P. N. Pandita |
hep-ph/9412250 | Finite Width Effects in Top Quark Decays | Motivated by evidence that the top quark mass lies near the $bWZ$ threshold,
we compute the decay rate for $t\rightarrow bWZ$ in the Standard Model,
including the effects of the finite widths of the $W$ and $Z$ bosons. In the
limit where the width effects are negligible, our results disagree with
previously published c... | 1994-12-06 | 2009-10-28 | [
"hep-ph"
] | Gregory MAHLON and Stephen PARKE |
hep-ph/9412243 | Phenomenology from the Lattice | This is the written version of four lectures given at the 1994 TASI. My aim
is to explain the essentials of lattice calculations, give an update on (though
not a review of) the present status of calculations of phenomenologically
interesting quantities, and to provide an understanding of the various sources
of uncertai... | 1994-12-06 | 2007-05-23 | [
"hep-ph",
"hep-lat"
] | Stephen R. Sharpe |
hep-ph/9412246 | Constraining Spectral Functions at Finite Temperature and Chemical
Potential with Exact Sum Rules in Asymptotically Free Theories | Within the framework of the operator product expansion (OPE) and the
renormalization group equation (RGE), we show that the temperature and chemical
potential dependence of the zeroth moment of a spectral function (SF) is
completely determined by the one-loop structure in an asymptotically free
theory, and in particula... | 1994-12-06 | 2011-01-04 | [
"hep-ph",
"hep-lat",
"nucl-th"
] | Suzhou HUANG and Marcello LISSIA |
hep-ph/9412245 | Production of Heavy Selectrons in Electron-Photon Collisions | We study the production and decay of heavy selectrons in the electron-photon
mode of a linear collider of the next generation. The standard model
backgrounds can be substantially reduced by appropriate kinematical cuts. As a
consequence, selectrons far heavier than the kinematical threshold for pair
production are show... | 1994-12-06 | 2009-10-28 | [
"hep-ph"
] | Debajyoti Choudhury (CERN) Frank Cuypers (MPI Munich) |
hep-ph/9412244 | Light-Front Dynamics and Light-Front QCD | In this article we review the basic formulation of light-front field theory
and light-front phenomena in strong interaction. We also explore various
approaches to the understanding of these phenomena and the associated problems
of hadronic bound states based on QCD (quantum chromodynamics) on the
light-front. | 1994-12-06 | 2011-04-15 | [
"hep-ph",
"hep-th"
] | Wei-Min Zhang |
hep-ph/9412248 | Effective Lagrangian Approach to the Theory of Eta Photoproduction in
the $N^{*}(1535)$ Region | We investigate eta photoproduction in the $N^{*}(1535)$ resonance region
within the effective Lagrangian approach (ELA), wherein leading contributions
to the amplitude at the tree level are taken into account. These include the
nucleon Born terms and the leading $t$-channel vector meson exchanges as the
non-resonant pi... | 1994-12-06 | 2009-09-25 | [
"hep-ph",
"nucl-th"
] | M. Benmerrouche, N. C. Mukhopadhyay and J. F. Zhang |
hep-ph/9412237 | Direct detection of dark matter in SU(5)xU(1) supergravity | We compute the scattering rates for the lightest neutralino $\chi^0_1$ in the
forthcoming germanium $(^{73}{\rm Ge}+^{76}{\rm Ge})$ detector and a proposed
lead detector $(^{207}{\rm Pb})$, within the framework of $SU(5)\times U(1)$
supergravity. We find that in only a small portion ($\lsim10\%$) of the
parameter space... | 1994-12-05 | 2009-10-28 | [
"hep-ph"
] | X. Wang, J. Lopez, and D. Nanopoulos |
hep-ph/9412229 | The $B \to K^\ast \psi$ Polarization Puzzle | 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 ... | 1994-12-05 | 2007-05-23 | [
"hep-ph"
] | R. Aleksan, A. Le Yaouanc, L. Oliver, O. P\`ene and J.-C. Raynal |
hep-ph/9412232 | A Note on the Finiteness of Curvature at Cosmic String Cusps | We examine a Nambu-Goto string trajectory in the neighbourhood of a cusp and
determine the extrinsic curvature invariants. These are demonstrated to be
finite, in contradiction with naive expectation. Thus the Nambu action is a
valid approximation for the motion of a cosmic string vortex even at cusps.
This suggests th... | 1994-12-05 | 2007-05-23 | [
"hep-ph",
"gr-qc",
"hep-th"
] | Ruth Gregory |
hep-ph/9412239 | Chromo- and Electrodynamics of Heavy Unstable Particle | In this talk I attempt to survey some selected physics issues on radiative
interference phenomena in the production of heavy unstable particles. A special
emphasis is placed on the reactions $e^+e^- \rightarrow W^+W^- \rightarrow 4$
jets and $e^+e^- \rightarrow t\bar{t} \rightarrow bW^+\bar{b}W^-$. A
transparent recipe... | 1994-12-05 | 2011-03-02 | [
"hep-ph"
] | Valery A. Khoze |
hep-ph/9412241 | Numerical studies of instanton induced baryon decay | We describe an application of computational techniques to the study of
instanton induced baryon decay in high energy electroweak interactions. | 1994-12-05 | 2012-08-27 | [
"hep-ph",
"hep-lat",
"hep-th"
] | Claudio Rebbi and Robert Singleton, Jr |
hep-ph/9412227 | The Expected, The Promised and The Conceivable -- On CP Violation in
Beauty and Charm Decays | the KM expectations of large CP asymmetries in $B$ decays are reviewed. I
describe some observable signatures for the intervention of New Physics and
list benchmarks defining the `ultimate' measurements in beauty physics. I also
stress the need for dedicated searches for CP asymmetries in $D$ decays;
attaining a sensit... | 1994-12-05 | 2010-11-01 | [
"hep-ph"
] | I.I. Bigi |
hep-ph/9412242 | From Tetraquark to Hexaquark: A Systematic Study of Heavy Exotics in the
Large $N_c$ Limit | A systematic study of multiquark exotics with one or $N_c-1$ heavy quarks in
the large $N_c$ limit is presented. By binding a chiral soliton to a heavy
meson, either a normal $N_c$-quark baryon or an exotic $(N_c+2)$-quark baryon
is obtained. By replacing the heavy quark with $N_c-1$ heavy antiquarks, exotic
$(2N_c-2)$... | 1994-12-05 | 2010-11-01 | [
"hep-ph"
] | Chi-Keung Chow |
hep-ph/9412235 | The Nucleon's Tensor Charge | We seek to understand the physical significance of the nucleon's tensor
charge and make estimates of its size in phenomenological models and the QCD
sum rule. | 1994-12-05 | 2009-10-28 | [
"hep-ph"
] | Hanxin He and Xiangdong Ji |
hep-ph/9412236 | Improved analysis of the renormalization scheme ambiguities in the QCD
corrections to the semileptonic decay of the tau lepton | The perturbative QCD corrections to the semileptonic decay width of the tau
lepton are evaluated in the next-next-to-leading order from the contour
integral representation in various renormalization schemes, using numerical
solution of the renormalization group equation for complex energies. A
quantitative estimate of ... | 1994-12-05 | 2008-02-03 | [
"hep-ph"
] | Piotr A. Raczka and Andrzej Szymacha (Warsaw University) |
hep-ph/9412228 | Quenched Chiral Corrections to Heavy-Light Decay Constants at Order 1/M | Quenched chiral perturbation is used to study the decay constants for
heavy-light mesons beyond the leading order in 1/M. The results are used to
estimate the error in quenched lattice calculations of the decay constants. For
the double ratio $R_1 = ( f_{D_s}/f_D) / (f_{B_s}/f_B)$ we find that the error
is small, conse... | 1994-12-05 | 2008-02-03 | [
"hep-ph"
] | Michael J. Booth |
hep-ph/9412231 | Systematics of the Light and Strange Baryons and the Symmetries of QCD | The spectra of the nucleons and the strange hyperons are well described by a
harmonic confinement potential for the constituent quarks and an SU(3)
flavor-symmetric interaction mediated by the pseudoscalar octet that is
associated with the hidden approximate chiral symmetry of QCD. The spectrum is
formed of multiplets ... | 1994-12-05 | 2008-02-03 | [
"hep-ph"
] | L.Ya.Glozman, D.O.Riska |
hep-ph/9412234 | Theoretical Motivation for Gravitation Experiments on Ultra-Low Energy
Antiprotons and Antihydrogen | We know that the generally accepted theories of gravity and quantum mechanics
are fundamentally incompatible. Thus, when we try to combine these theories, we
must beware of physical pitfalls. Modern theories of quantum gravity are trying
to overcome these problems. Any ideas must confront the present agreement with
gen... | 1994-12-05 | 2007-05-23 | [
"hep-ph",
"astro-ph",
"gr-qc"
] | Michael Martin Nieto, T. Goldman, John D. Anderson, Eunice L. Lau, and
J. P\'erez-Mercader |
hep-ph/9412230 | Spin-Momentum Correlation (Handedness) in the Process of Four Pions
Production in the Electron-Positron Collisions | We discuss special type of polarization asymmetry (``handedness") in the
process $e^+e^-\to 4\pi$, when one of initial particles is longitudinally
polarized. The asymmetry is proportional to the degree of polarization and to
the width to mass ratio of rho-meson. It can reach 4-5\% in some kinematical
region. Both chann... | 1994-12-05 | 2009-10-28 | [
"hep-ph"
] | E.L. Bratkovskaya, E.A. Kuraev, Z.K. Silagadze, O.V. Teryaev |
hep-ph/9412238 | Methods of calculation of higher power corrections in QCD | Although the methods of calculation of power corrections in QCD sum rules are
well known, algebraic complexity rapidly grows with the increase of vacuum
condensates' dimensions. Currently, state-of-the-art calculations include
dimension 7 and 8 condensates. I summarize and extend algorithms of such
calculations. First,... | 1994-12-05 | 2010-11-01 | [
"hep-ph"
] | A.G.Grozin |
hep-ph/9412240 | A small non-vanishing cosmological constant from vacuum energy:
physically and observationally desirable | Increasing improvements in the independent determinations of the Hubble
constant and the age of the universe now seem to indicate that we need a small
non-vanishing cosmological constant to make the two independent observations
consistent with each other. The cosmological constant can be physically
interpreted as due t... | 1994-12-05 | 2009-10-28 | [
"hep-ph",
"astro-ph",
"gr-qc"
] | Anupam Singh (address since Sept. 1: Physics Dept. UCSB) |
hep-ph/9412233 | Do the Age of the Universe and the Hubble Constant Depend on What Scale
One Observes Them? | The apparent cosmological conflict between the age of the Universe, predicted
in the standard Friedman cosmology by using the recent measurement of the
larger Hubble constant from a direct calibration of the distance to the Virgo
galaxy cluster, and the ages of the oldest stars and globular clusters is
resolved by invo... | 1994-12-05 | 2010-11-30 | [
"hep-ph",
"astro-ph",
"gr-qc"
] | C.W. Kim |
hep-ph/9412226 | Heavy-to-Light Form Factors from QCD Sum Rules on the Light-Cone | We discuss the calculation of the $B \rightarrow \pi$ and $D \rightarrow \pi$
form factors based on an expansion in terms of pion wave functions on the
light-cone with increasing twist and QCD sum rule methods. The results are
compared with predictions of conventional QCD sum rules and other approaches. | 1994-12-04 | 2009-09-25 | [
"hep-ph"
] | Alexander Khodjamirian and Reinhold R\"uckl |
hep-ph/9412225 | Charged Higgs mass bound from the $b\rightarrow s\gamma$ process in the
minimal supergravity model | We study the constraint on the mass of the charged Higgs boson in the minimal
supergravity model based on the recent measurement of the inclusive
$b\rightarrow s\gamma$ decay. It is shown that the lower bound for the charged
Higgs mass crucially depends on the sign of the higgsino mass parameter
($\mu$). For $\mu<0$, t... | 1994-12-03 | 2011-07-19 | [
"hep-ph"
] | Toru Goto (Hiroshima University) and Yasuhiro Okada (KEK) |
hep-ph/9412224 | On the possibilities to study the exotic state $1^{-+}$ in the
experiments on photoproduction of the $\pi\eta$, $\pi\eta'$ systems | We show that in photoproduction experiments there are propitious conditions
to study the exotic state $1^{-+}$ in the $\pi\eta$ and $\pi\eta'$ channels. We
show that for unpolarized photon beam the contributions with natural and
unnatural parity exchanges do not interfere with each other, the fact which
gives additiona... | 1994-12-03 | 2009-10-28 | [
"hep-ph"
] | I.G.Aznauryan |
hep-ph/9412223 | Spontaneous Family Symmetry Breaking And Fermion Mixing | We propose a theory to describe fermion mixing. The theory respects the
maximal abelian family symmetries which are spontaneously broken down at a
large scale. We find that quark mixing can be well described in this theory.
Some concrete models are constructed. The crucial point for model building is
to introduce some ... | 1994-12-03 | 2010-11-01 | [
"hep-ph"
] | Zhijian Tao |
hep-ph/9412219 | Off-Shell Axial Anomaly via the \gamma^* \pi^0 -> \gamma Transition | The $\gamma^* \pi^0 \rightarrow \gamma$ form factor, including the extension
off the pion mass-shell, is obtained from a generalized impulse approximation
within a QCD-based model field theory known to provide an excellent description
of the pion charge form factor. This approach implements dressing of the vertex
funct... | 1994-12-02 | 2009-09-25 | [
"hep-ph",
"nucl-th"
] | M. R. Frank, K. L. Mitchell, C. D. Roberts and P. C. Tandy |
hep-ph/9412215 | $e^+ e^- \to e^- {\bar \nu_e} u {\bar d}$ from LEP to linear collider
energies | The complete tree level cross section for the process $e^+e^- \to e^-
\bar\nu_e u \bar{d}$ is computed using the GRACE system, a program package for
automatic amplitude calculation. Special attention is brought to the gauge
violation problem induced by the finite width of the $W$-boson. The {\it
preserved gauge scheme}... | 1994-12-02 | 2009-10-28 | [
"hep-ph"
] | Y. Kurihara, D. Perret-Gallix, Y. Shimizu |
hep-ph/9412213 | Model-Independent Comparison of Direct vs. Indirect Detection of
Supersymmetric Dark Matter | We compare the rate for elastic scattering of neutralinos from various nuclei
with the flux of upward muons induced by energetic neutrinos from neutralino
annihilation in the Sun and Earth. We consider both scalar and axial-vector
interactions of neutralinos with nuclei. We find that the event rate in a kg of
germanium... | 1994-12-02 | 2008-11-26 | [
"hep-ph",
"astro-ph"
] | Marc Kamionkowski, Kim Griest, Gerard Jungman, and Bernard Sadoulet |
hep-ph/9412222 | Long Distance Contributions to Penguin Processes $b\rightarrow s\gamma$
and $b\rightarrow d \gamma$ | We consider the long distance contributions to inclusive penguin processes
through processes like $b\rightarrow s V$ and $b\rightarrow d V$ where $V$ are
$^3S_1(c\bar c)$ states $\psi_i$ in the former case and include $\rho$,
$\omega$ for the latter case. We carefully examine vector dominance for $\bar c
c$ states, and... | 1994-12-02 | 2009-10-28 | [
"hep-ph"
] | N. Deshpande, Xiao-Gang He and Josip Trampetic |
hep-ph/9412221 | The Impact of QCD and Light-Cone Quantum Mechanics on Nuclear Physics | We discuss a number of novel applications of Quantum Chromodynamics to
nuclear structure and dynamics, such as the reduced amplitude formalism for
exclusive nuclear amplitudes. We particularly emphasize the importance of
light-cone Hamiltonian and Fock State methods as a tool for describing the
wavefunctions of composi... | 1994-12-02 | 2009-09-11 | [
"hep-ph"
] | Stanley J. Brodsky and Felix Schlumpf |
hep-ph/9412214 | Strategies for Probing CP Properties in the Top Quark System at $e^-e^+$
and Hadron Colliders | I discuss strategies for probing CP properties in the top quark system at
$e^-e^+$ and hadron Colliders. The magnitudes of CP violation effects predicted
by various models are reviewed. I also discuss the potential of various current
and future colliders in measuring the CP asymmetry associated with the
productions and... | 1994-12-02 | 2010-11-01 | [
"hep-ph"
] | C.-P. Yuan (Michigan State University) |
hep-ph/9412216 | High Harmonic Configurations of Cosmic Strings: An Analysis of
Self-Intersections | A general formulation for describing odd-harmonic cosmic strings is developed
and used to determine the self-intersection properties of high-harmonic loops.
This is important because loop formation mechanisms produce high-harmonic
components (kinks) which can only be eliminated very slowly by gravitational
radiation, d... | 1994-12-02 | 2010-12-09 | [
"hep-ph",
"astro-ph"
] | Xavier A. Siemens and T.W.B. Kibble |
hep-ph/9412217 | A Re-examination of the Path Ordered Approach to Real Time Thermal Field
Theory | We argue that the asymptotic condition should not be applied in the
derivation of the real time formalism of thermal field theory. It is shown
that, contrary to popular belief, the generating functional of time ordered
Green functions does not factorise. When no asymptotic condition is applied to
the real time formalis... | 1994-12-02 | 2016-08-24 | [
"hep-ph"
] | T.S.Evans and A.C.Pearson |
hep-ph/9412220 | The Isospin Splittings of Heavy-Light Quark Systems | The isospin mass splittings of the pseudoscalar and vector D and B
light-heavy quark system have been calculated using the method of QCD sum
rules. Nonperturbative QCD effects are shown to be very small, so that mass
splittings arise almost completely from current quark mass splitting and
electromagnetic effects, for w... | 1994-12-02 | 2009-09-25 | [
"hep-ph"
] | L. Kisslinger and Zhenping Li |
hep-ph/9412218 | Supersymmetric Left-Right Model and its Phenomenological Implications | We review here our study of a supersymmetric left-right model (SLRM). In the
model the $R$-parity is spontaneously broken. Phenomenologically novel feature
of the model is the occurrance of the doubly charged particles in the Higgs
sector, which are possibly light enough to be seen in the next linear collider.
Detectio... | 1994-12-02 | 2007-05-23 | [
"hep-ph"
] | K. Huitu, J. Maalampi, M. Raidal |
hep-ph/9412208 | Bounds on $\Delta B=1$ Couplings in the Supersymmetric Standard Model | The most general supersymmetric model contains baryon number violating terms
of the form $\lambda_{ijk}\;\ov{D}_i\, \ov{D}_j\, \ov{U}_k$ in the
superpotential. We reconsider the bounds on these couplings, assuming that
lepton number conservation ensures proton stability. These operators can
mediate $n - \ov{n}$ oscilla... | 1994-12-01 | 2014-11-17 | [
"hep-ph"
] | J.L. Goity and Marc Sher |
hep-ph/9412210 | Sphalerons and Conformally Compactified Minkowski Spacetime | Solutions to the Yang-Mills field equations which describe exploding or
imploding shells of gauge field and which may serve as approximations to the
exploding sphaleron are discussed. The solutions are conformally related to
$SO(2)\times SO(4)$ invariant Yang-Mills solutions. The behavior of fermions in
the gauge field... | 1994-12-01 | 2009-10-07 | [
"hep-ph",
"gr-qc",
"hep-th"
] | G.W. Gibbons and Alan R. Steif |
hep-ph/9412205 | Mass corrections in $J/\psi \to B\bar B$ decay and the role of
distribution amplitudes | We consider mass correction effects on the polar angular distribution of a
baryon--antibaryon pair created in the chain decay process $e^-e^+ \to J/\psi
\to B\bar B$, generalizing a previous analysis of Carimalo. We show the
relevance of the features of the baryon distribution amplitudes and estimate
the electromagneti... | 1994-12-01 | 2009-10-28 | [
"hep-ph"
] | Francesco Murgia and Maurizio Melis |
hep-ph/9412211 | Bound States in Galilean-Invariant Quantum Field Theory | We consider the nonrelativistic quantum mechanics of a model of two spinless
fermions interacting via a two-body potential. We introduce quantum fields
associated with the two particles as well as the expansion of these fields in
asymptotic ``in'' and ``out'' fields, including such fields for bound states,
in principle... | 1994-12-01 | 2008-02-03 | [
"hep-ph",
"nucl-th"
] | S.R. Corley and O.W. Greenberg |
hep-ph/9412207 | Isospin Violation in Chiral Perturbation Theory and the Decays $\eta \ra
\pi \ell \nu$ and $\tau \ra \eta \pi \nu$ | I discuss isospin breaking effects within the standard model. Chiral
perturbation theory presents the appropriate theoretical framework for such an
investigation in the low--energy range. Recent results on the electromagnetic
contributions to the masses of the pseudoscalar mesons and the $K_{\ell 3}$
amplitudes are rep... | 1994-12-01 | 2009-10-28 | [
"hep-ph"
] | H. Neufeld |
hep-ph/9412212 | The Decay b-s+gamma in SUSY Extensions of the Standard Model | A brief review is given of the decay b-s+gamma in SUSY extensions of the
Standard Model.It is found that the recent CLEO results put strong constraints
on the parameter space of the minimal N=1 Supergravity unified theory.Dark
matter analyses are also strongly constrained for mu>0. | 1994-12-01 | 2007-05-23 | [
"hep-ph"
] | Pran Nath and R.Arnowitt |
hep-ph/9412204 | Low-Temperature QED with External Magnetic Field | Low-temperature expansion of the effective Lagrangian of the QED$_{3+1}$ with
a uniform magnetic field and a finite chemical potential is performed.
Temperature corrections, as well as zero-temperature expression for the
effective Lagrangian are presented as finite sums over partially filled Landau
levels. | 1994-12-01 | 2007-05-23 | [
"hep-ph",
"cond-mat"
] | Vadim Zeitlin (P.N.Lebedev Physical Institute) |
hep-ph/9412209 | Contributions of below--threshold decays to ${\cal {MSSM}}$ Higgs
branching ratios | We calculate all the experimentally relevant branching ratios of the Higgs
bosons of the Minimal Supersymmetric Standard Model, paying particular
attention to the contributions from below--threshold decays. We show that in
some cases these can significantly change the pattern of branching ratios
calculated without taki... | 1994-12-01 | 2009-10-28 | [
"hep-ph"
] | S. Moretti and W.J. Stirling |
hep-ph/9411445 | A Model of Low-lying States in Strongly Interacting Electroweak
Symmetry-Breaking Sector | It is proposed that, in a strongly-interacting electroweak sector, besides
the Goldstone bosons, the coexistence of a scalar state ($H$) and vector
resonances such as $A_1$ [$I^G(J^P)=1^-(1^+$)], $V$ [$1^+(1^-)$] and
$\omega_H^{}$ [$0^-(1^-)$] is required by the proper Regge behavior of the
forward scattering amplitude... | 1994-12-01 | 2009-10-28 | [
"hep-ph"
] | T. Han (UC-Davis), Z. Huang (LBL), P.Q. Hung (Univ. of Virginia) |
hep-ph/9412201 | ZFITTER -- An Analytical Program for Fermion Pair Production in e+e-
Annihilation | We describe how to use ZFITTER, a program based on a semi-analytical approach
to fermion pair production in e+e- annihilation and Bhabha scattering. A
flexible treatment of complete ${\cal O}(\alpha)$ QED corrections, also
including higher orders, allows for three calculational {\bf chains} with
different realistic set... | 1994-12-01 | 2008-02-03 | [
"hep-ph"
] | D. Bardin, M. Bilenky, A. Chizhov, O. Fedorenko, S. Ganguli, A. Gurtu,
M. Lokajicek, G. Mitselmakher, A. Olshevsky, J. Ridky, S. Riemann, T.
Riemann, M. Sachwitz, A. Sazonov, A.D. Schaile, Yu. Sedykh, I. Sheer, L.
Vertogradov |
hep-ph/9412203 | CP Violation in $\tau\rightarrow 3\pi\nu_\tau$ | We consider CP violating effects in the decays $\tau\rightarrow
(3\pi)\nu_\tau$ where both the ${\rm J}^{\rm P}=1^+$ resonance, $a_1$, and
${\rm J}^{\rm P}=0^-$ resonance, $\pi^\prime$, can contribute. The interference
between the $a_1$ and $\pi^\prime$ resonances can lead to enhanced CP-violating
asymmetries whose mag... | 1994-12-01 | 2009-09-25 | [
"hep-ph"
] | S.Y. Choi, K. Hagiwara, M. Tanabashi |
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