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/9212306 | A Z' Model Which May Be Relevant to the New LEP Events | A multi-Higgs model with an extra neutral gauge boson ($Z'$) is introduced.
One scalar Higgs boson ($H_2$) in this model decays dominantly into a photon
pair. The $Z'$ decay to $\mu^+\mu^-$ gets a much larger branching ratio than
the $Z$ decay to this channel. The $Z Z' H_2$ vertex provides a final state
from $Z$ decay... | 1992-12-23 | 2007-05-23 | [
"hep-ph"
] | Dan-di Wu and Chung Kao |
hep-ph/9212303 | A Review of the Instability of Hot Electroweak Theory and its Bounds on
$m_h$ and $m_t$ | [Talk presented at the International Seminar Quarks `92, Zvenigorod, Russia,
May 11-17, 1992.] The electroweak vacuum need not be absolutely stable. For
certain top and Higgs masses in the Minimal Standard Model, it is instead
metastable with a lifetime exceeding the present age of the Universe. The decay
of our vacuum... | 1992-12-22 | 2007-05-23 | [
"hep-ph"
] | Peter Arnold |
hep-ph/9212301 | Detailed Stability Analysis of Electroweak Strings | We give a detailed stability analysis of the Z-string in the standard
electroweak model. We identify the mode that determines the stability of the
string and numerically map the region of parameter space where the string is
stable. For $\sin^2 \theta_W = 0.23$, we find that the strings are unstable for
a Higgs mass lar... | 1992-12-22 | 2009-10-22 | [
"hep-ph"
] | Margaret James, Leandros Perivolaropoulos and Tanmay Vachaspati |
hep-ph/9212304 | Linear Potentials and Galactic Rotation Curves | We derive a simple, closed form expression for the potential of a thin
exponential disk of stars interacting through gravitational potentials of the
form $V(r)=-\beta /r+\gamma r/2$, the potential associated with fundamental
sources in the fourth order conformal invariant theory of gravity which has
recently been advan... | 1992-12-22 | 2009-10-22 | [
"hep-ph"
] | Philip D. Mannheim |
hep-ph/9212302 | Spectral Functions for Heavy-Light Currents and Form Factor Relations in
Hqet | We derive relations among form factors describing the current-induced
transitions: (vacuum) $\rightarrow B,B^{*}, B \pi, B^{*} \pi, B \rho$ and
$B^{*} \rho$ using heavy quark symmetry. The results are compared to
corresponding form factor relations following from identities between scalar
and axial vector, and pseudosc... | 1992-12-22 | 2010-11-01 | [
"hep-ph"
] | C.A.Dominguez, J.G.Korner and K.Schilcher |
hep-ph/9212299 | Spontaneous Baryogenesis in Supersymmetric Models | In this paper we extend the results of previous work on spontaneous
baryogenesis to general models involving CP violation in the Higgs sector. We
show how to deal with Chern-Simons terms appearing in the effective potential
arising from phase changes in the vacuum expectation values of the Higgs
fields. In particular, ... | 1992-12-22 | 2010-11-01 | [
"hep-ph"
] | S.A. Abel, W.N. Cottingham and I.B. Whittingham |
hep-ph/9212300 | The Third Electromagnetic Constant of an Isotropic Medium: | In addition to the dielectric and magnetic permeability constants, another
constant is generally needed to describe the electrodynamic properties of a
linear isotropic medium. We discuss why the need for the third constant arises
and what sort of physical situations can give rise to a non-zero value for it.
This additi... | 1992-12-22 | 2009-10-22 | [
"hep-ph",
"cond-mat"
] | Jose F. Nieves & Palash B. Pal |
hep-ph/9212305 | Upper Bounds on the Lightest Higgs Boson Mass in General Supersymmetric
Standard Models | In a general supersymmetric standard model there is an upper bound $m_h$ on
the tree level mass of the $CP=+1$ lightest Higgs boson which depends on the
electroweak scale, $\tan \beta$ and the gauge and Yukawa couplings of the
theory. When radiative corrections are included, the allowed region in the
$(m_h,m_t)$ plane ... | 1992-12-22 | 2009-10-22 | [
"hep-ph"
] | J.R. Espinosa and M. Quir\'os |
hep-ph/9212294 | Very Large Intermediate Breaking Scale In The Gepner Three Generation
Model | A detailed study of the intermediate symmetry breaking scale, via the
renormalization group equations, for a three generation heterotic string model
arising from the N=2 superconformal construction is reported. The numerical
study shows that the model admits a very large intermediate breaking scale
$\op{>}{\sim}1.0\tim... | 1992-12-21 | 2008-11-26 | [
"hep-ph",
"hep-th"
] | Jizhi Wu and Richard Arnowitt |
hep-ph/9212289 | QCD Mass Inequalities in the Heavy Quark Limit | QCD inequalities are derived for the masses of mesons and baryons containing
a single heavy quark using the heavy quark effective field theory. A rigorous
lower bound is obtained for the $\bar\Lambda$ parameters of the heavy quark
effective theory that parameterize $1/m$ corrections, $\bar\Lambda$ > 237 MeV
for mesons,... | 1992-12-21 | 2011-01-25 | [
"hep-ph"
] | Zachary Guralnik and Aneesh V. Manohar |
hep-ph/9212295 | Heavy Meson Masses in Chiral Perturbation Theory with Heavy Quark
Symmetry | The $SU(3)$ and hyperfine mass splittings of mesons containing a single heavy
quark are computed to one-loop order in chiral perturbation theory with heavy
quark spin symmetry. Electromagnetic contributions of order $\alpha_em$ are
included. The observed values of the mass splittings are consistent with the
one-loop ch... | 1992-12-21 | 2008-11-26 | [
"hep-ph"
] | Elizabeth Jenkins |
hep-ph/9212309 | An Example of Semiclassical Instanton-Like Scattering: (1+1) Dimensional
Sigma Model | A solution to the classical field equations in the massless (1+1)-dimensional
O(3) sigma model is found, which describes a multi-particle instanton-like
transition at high energy. In the limit of small number of initial particles,
the number of final particles is shown to be also small, and the probability of
the trans... | 1992-12-21 | 2007-05-23 | [
"hep-ph"
] | V.A.Rubakov, D.T.Son and P.G.Tinyakov |
hep-ph/9212293 | Phase Transitions in Quantum Field Theory | We discuss here phase transitions in quantum field theory in the context of
vacuum realignment through an explicit construction. Vacuum destabilisation may
occur through a scalar attaining a nonzero expectation value, or through a
condensate mechanism as in superconductivity and for chiral symmetry breaking,
or by some... | 1992-12-21 | 2008-02-03 | [
"hep-ph"
] | S.P. Misra |
hep-ph/9212298 | High Energy Photon-Nucleon and Photon-Nucleus Cross Sections | We re\,examine the theory of hadronic photon-nucleon interactions at the
quark-gluon level. The possibility of multiple parton collisions in a single
photon-nucleon collision requires an eikonal treatment of the high-energy
scattering process. We give a general formulation of the theory in which the
$\gamma p$ cross se... | 1992-12-21 | 2014-11-17 | [
"hep-ph"
] | K. Honjo, L. Durand, R. Gandhi, I. Sarcevic and H. Pi |
hep-ph/9212292 | On the Analytic Structure of Hadronic Amplitudes in QCD | Analytic properties of hadronic amplitudes are discussed within the framework
of QCD as formulated on the basis of the BRST algebra. Local, composite fields
are introduced for hadrons. Given confinement, it is shown that hadronic
amplitudes have no thresholds or structure singularities (anomalous thresholds)
which are ... | 1992-12-21 | 2007-05-23 | [
"hep-ph"
] | Reinhard Oehme |
hep-ph/9212296 | Multiloop String-Like Formulas for QED | Multiloop gauge-theory amplitudes written in the Feynman-parameter
representation are poised to take advantage of two important developments of
the last decade: the spinor-helicity technique and the superstring
reorganization. The former has been considered in a previous article; the
latter will be elaborated in this p... | 1992-12-21 | 2009-10-22 | [
"hep-ph",
"hep-th"
] | C.S. Lam |
hep-ph/9212297 | Jets and Jet Multiplicities in High Energy Photon-Nucleon Inetraction: | We discuss the theory of jet events in high-energy photon-proton interactions
using a model which gives a good description of the data available on total
inelastic $\gamma p$ cross sections up to $\sqrt{s}$=210 GeV. We show how to
calculate the jet cross sections and jet multiplicities and give predictions
for these qu... | 1992-12-21 | 2014-11-17 | [
"hep-ph"
] | L. Durand, K. Honjo, R. Gandhi, I. Sarcevic and H. Pi |
hep-ph/9212291 | Bounds on Bess Model Parameters from Vector-Boson Production in e+e-
Collisions | The BESS model is the Higgs-less alternative to the standard model of
electroweak interaction, based on nonlinearly realized spontaneous symmetry
breaking. Since it is nonrenormalizable, new couplings (not existing in the SM)
are induced at each loop order. On the basis of the one loop induced
vector-boson self-couplin... | 1992-12-21 | 2009-10-22 | [
"hep-ph"
] | R. Boenisch (Universitaet Muenchen), C. Grosse-Knetter and R.
Koegerler (Universitaet Bielefeld) |
hep-ph/9212288 | Some Two-Loop Corrections to the Finite Temperature Effective Potential
in the Electroweak Theory | Perturbation theory at finite temperature suffers from well-known infrared
problems. In the standard model, as a result, one cannot calculate the
effective potential for arbitrarily small values of $\phi$, the Higgs
expectation value. Because the Higgs field is now known not to be extremely
light, it is necessary to de... | 1992-12-21 | 2011-07-19 | [
"hep-ph"
] | John Bagnasco and Michael Dine |
hep-ph/9212290 | On-Mass-Shell Renormalization of the $\langle \bar{t}t \rangle$
Contribution to the $\Delta I = 1/2$ $s \leftrightarrow d$ Self-Energy
Transition | In $\langle \bar{t}t \rangle$-scenarios for dynamical electroweak symmetry
breaking, the presence of a very large t-quark condensate necessarily generates
an $s \leftrightarrow d$ self-energy transition which will contribute
exclusively to $\Delta I = 1/2$ strangeness-changing matrix elements. This
contribution is calc... | 1992-12-21 | 2007-05-23 | [
"hep-ph"
] | M.R. Ahmady, V. Elias and N.C.A. Hill |
hep-ph/9212287 | QCD at Finite Temperature: A Variational Approach: | We develop here a nonperturbative framework to study quantum chromodynamics
(QCD) at finite temperatures using the thermofield dynamics (TFD) method of
Umezawa. The methodology considered here is self-consistent and variational.
There is a dynamical generation of a magnetic gluon mass. This eliminates the
infrared prob... | 1992-12-20 | 2009-10-22 | [
"hep-ph",
"nucl-th"
] | A. Mishra, H. Mishra, S.P. Misra, S.N. Nayak |
hep-ph/9212286 | Electroweak Z-string in Two-Higgs-Doublet Standard Model | We derive electroweak Z-string solutions in the Glashow-Weinberg-Salam model
with two Higgs doublets. The existence of such solutions in particular requires
a specific relation between the ratio of the two Higgs vacuum expectation
values, {\it i.e.} $\tan\beta$, and the couplings in the Higgs potential. | 1992-12-19 | 2007-05-23 | [
"hep-ph"
] | HoSeong La |
hep-ph/9212283 | Past, Present, and Possible Future Limits on the Photon Rest Mass | In an historical context, present limits on the photon rest mass are
reviewed. More stringent, yet speculative, limits which have been proposed are
mentioned. Finally, new theoretical ideas and possible experimental
improvements on the present limits are discussed, along with possible
relationships between these two ar... | 1992-12-18 | 2007-05-23 | [
"hep-ph"
] | Michael Martin Nieto |
hep-ph/9212285 | Incorporation of QCD Effects in Basic Corrections of the Electroweak
Theory | We study the incorporation of QCD effects in the basic electroweak
corrections \drcar, \drcarw, and \dr. They include perturbative
\Ord{\alpha\alpha_s} contributions and $t\bar{t}$ threshold effects. The latter
are studied in the resonance and Green-function approaches, in the framework of
dispersion relations that aut... | 1992-12-18 | 2016-09-01 | [
"hep-ph"
] | Sergio Fanchiotti, Bernd Kniehl and Alberto Sirlin |
hep-ph/9212282 | Constraints on singlet right-handed neutrinos coming from the
$Z^0$-width | We study the constraints on masses and mixing angles imposed by the measured
$Z^0$ invisible width, in a model in which a singlet right-handed neutrino
mixes with all the Standard Model neutrinos. | 1992-12-18 | 2009-12-30 | [
"hep-ph"
] | C. O. Escobar, O.L.G. Peres, V. Pleitez and R. Zukanovich Funchal |
hep-ph/9212279 | On the Production of Flux Vortices and Magnetic Monopoles in Phase
Transitions | We examine the basic assumptions underlying a scenario due to Kibble that is
widely used to estimate the production of topological defects. We argue that
one of the crucial assumptions, namely the geodesic rule, although completely
valid for global defects, becomes ill defined for the case of gauged defects.
We address... | 1992-12-18 | 2010-11-01 | [
"hep-ph",
"cond-mat"
] | Serge Rudaz and Ajit M. Srivastava |
hep-ph/9212281 | Beyond the Standard Model in Tau Decays | INVITED TALK AT SECOND WORKSHOP ON TAU LEPTON PHYSICS, COLOMBUS, OHIO,
SEPTEMBER 1992 | 1992-12-18 | 2007-05-23 | [
"hep-ph"
] | Jose W. F. Valle |
hep-ph/9212280 | On amplitude zeros at threshold | The occurrence of zeros of 2 to n amplitudes at threshold in scalar theories
is studied. We find a differential equation for the scalar potential, which
incorporates all known cases where the 2 to n amplitudes at threshold vanish
for all sufficiently large $n$, in all space-time dimensions, $d\ge 1$. This
equation is r... | 1992-12-18 | 2009-10-22 | [
"hep-ph",
"hep-th"
] | E.N. Argyres, C.G. Papadopoulos and R. Kleiss |
hep-ph/9212284 | The electroweak theory of SU(3) $\times$ U(1) | An electroweak model of SU(3) $\times$ U(1) gauge group is studied. {}From
the group theoretical constraint, the symmetry breaking of this model to the
standard model occurs at 1.7~TeV or lower. Hence the mass of the new neutral
gauge boson is less than 1.7 TeV. The $Y^\pm$ and $Y^{\pm\pm}$ masses are found
to be less ... | 1992-12-18 | 2011-07-19 | [
"hep-ph"
] | Daniel Ng |
hep-ph/9212275 | Light fermions in composite models | In preon models based on chiral gauge theories, we show that light composite
fermions can ensue as a result of gauging a subset of preons in a vector-like
manner. After demonstrating how this mechanism works in a toy example, we
construct a one generation model of quarks which admits a hierarchy between the
up and down... | 1992-12-17 | 2009-10-22 | [
"hep-ph"
] | S. Yu. Khlebnikov and R. D. Peccei |
hep-ph/9212278 | Mass Matrix Models | It is possible that the hierarchy in the masses and mixing of quarks is a
result of a horizontal symmetry. The smallness of various parameters is related
to their suppression by high powers of a scale of new physics. We analyze in
detail the structure of such symmetries in view of new experimental data and
present expl... | 1992-12-17 | 2008-11-26 | [
"hep-ph"
] | Miriam Leurer, Yosef Nir and Nathan Seiberg |
hep-ph/9212277 | Hyperfine Effects and Large $1/{m}_{Q}^{2}$ Corrections | Effects associated with hyperfine mass splitting between pseudo\-scalar and
vector mesons may induce surprisingly large $1/{m}_{Q}^{2}$ corrections in the
heavy quark expansion. We demonstrate this in a relativistic quark model by
calculating to all orders in $1/{m}_{Q}$, with and without hyperfine effects,
and compari... | 1992-12-17 | 2009-10-22 | [
"hep-ph"
] | B. Holdom and M. Sutherland |
hep-ph/9212274 | Chiral Estimates of Strong CP Violation Revisited | The effects of the CP violating $\theta$ term in the QCD Lagrangian upon low
energy hadronic phenomenology are reconsidered. Strong CP violating
interactions among Goldstone bosons and octet baryons are incorporated into an
effective chiral Lagrangian framework. The $\theta$ term's impact upon the
decays $\eta\to\pi\pi... | 1992-12-17 | 2010-11-01 | [
"hep-ph"
] | Peter Cho |
hep-ph/9212276 | Discontinuity Theorem for First Order Phase Transitions. Implications
for QCD | A first order phase transition leading to deconfinement and chiral
restoration is a likely possibility for QCD, at least in some region of the
temperature-density plane. A signal for a unique transition is that the order
parameters for such transitions (which can be understood in terms of symmetries
only in limiting si... | 1992-12-17 | 2009-10-22 | [
"hep-ph",
"hep-th"
] | A. Barducci, R. Casalbuoni, G. Pettini, R. Gatto |
hep-ph/9212270 | Jet inclusive cross sections | Minijet production in jet inclusive cross sections at hadron colliders, with
large rapidity intervals between the tagged jets, is evaluated by using the
BFKL pomeron. We describe the jet inclusive cross section for an arbitrary
number of tagged jets, and show that it behaves like a system of coupled
pomerons. | 1992-12-16 | 2007-05-23 | [
"hep-ph"
] | Vittorio Del Duca |
hep-ph/9212273 | CP-Violating Yukawa Couplings in the Skyrme Model and the Neutron
Electric Dipole Moment | We argue that the large-$\Nc$ behaviour of the Yukawa couplings in the Skyrme
model involves issues more subtle than the vanishing of linear fluctuations
needed for classical stability of the skyrmion. The chiral fluctuations about
the skyrmion must be quantized in order to reach a conclusion. An improved
quantization ... | 1992-12-16 | 2010-11-01 | [
"hep-ph"
] | H. A. Riggs and H. J. Schnitzer |
hep-ph/9212272 | What can the L3 $\gamma\gamma ll$ events be? | We consider the 4 $\gamma\gamma ll$ ($l=\mu,\ e$) events reported by the L3
collaboration, and go through the logical possibilities which could explain the
events. If they are not coincidental bremsstrahlung events, we find that the
physics which they could point to is extremely limited. One possibility would
be to hav... | 1992-12-16 | 2009-10-22 | [
"hep-ph"
] | Robert Garisto, John N. Ng |
hep-ph/9212271 | Neutral Currents and GIM Mechanism in SU(3)_L X U(1)_N Models for
Electroweak Interactions | We study the Glashow-Iliopoulos-Maiani mechanism for
flavor-changing-neutral-currents suppression in both, the gauge and Higgs
sectors, for models with $SU(3)_L\otimes U(1)_N$ gauge symmetry. The models
differ one from the other only with respect to the representation content. The
main features of these models are that... | 1992-12-16 | 2009-10-22 | [
"hep-ph"
] | J. C. Montero, F. Pisano and V. Pleitez |
hep-ph/9212266 | The Subleading Isgur-Wise Form Factor $\chi_3(v\cdot v')$ to Order
$\alpha_s$ in QCD Sum Rules | We calculate the contributions arising at order $\alpha_s$ in the QCD sum
rule for the spin-symmetry violating universal function $\chi_3(v\cdot v')$,
which appears at order $1/m_Q$ in the heavy quark expansion of meson form
factors. In particular, we derive the two-loop perturbative contribution to the
sum rule. Over ... | 1992-12-16 | 2009-10-22 | [
"hep-ph"
] | M. Neubert, Z. Ligeti and Y. Nir |
hep-ph/9212268 | Unitary Gauge, Stueckelberg Formalism and Gauge Invariant Models for
Effective Lagrangians | Within the framework of the path-integral formalism we reinvestigate the
different methods of removing the unphysical degrees of freedom from
spontanously broken gauge theories. These are: construction of the unitary
gauge by gauge fixing; \rx -limiting procedure; decoupling of the unphysical
fields by point transforma... | 1992-12-16 | 2009-10-22 | [
"hep-ph",
"hep-th"
] | Carsten Grosse-Knetter and Reinhart Koegerler (Universitaet Bielefeld,
Fakultaet fuer Physik, D-4800 Bielefeld 1, Germany) |
hep-ph/9212269 | Comment on ``Chiral Dilepton Model and the Flavor Question'' | We comment a model based on the $SU(3)_c \otimes SU(3)_L \otimes U(1)_X$
gauge symmetry recently proposed by Frampton. We stressed that the analysis of
flavor changing neutral currents impose strong constraints on th emasses of the
new gauge bosons of the model. | 1992-12-16 | 2008-02-03 | [
"hep-ph"
] | V. Pleitez |
hep-ph/9212265 | Flow Equations for the Higgs Top System | The flow equations or exact RG equations for the Higgs Top System are solved
to leading order in $1/N_c$. This allows to relate arbitrary bare actions with
this field content continuously to effective low energy theories, and we find
the flow converging towards general renormalizable models. The assumption of a
bare ac... | 1992-12-15 | 2011-01-13 | [
"hep-ph"
] | U. Ellwanger and L. Vergara |
hep-ph/9212264 | Photon Propagation in Dense Media | Using thermal field theory, we derive simple analytic expressions for the
spectral density of photons in degenerate QED plasmas, without assuming the
usual non or ultra-relativistic limit. We recover the standard results in both
cases. Although very similar in ultra-relativistic plasmas, transverse and
longitudinal exc... | 1992-12-15 | 2011-05-23 | [
"hep-ph"
] | T. Altherr, E. Petitgirard, T. del Rio Gaztelurrutia |
hep-ph/9212263 | Intermittency and Phase Transition | On the basis of a lattice gas model and the convolution formula with cell
construction scheme, we demonstrate that intermittency in the rapidity-space
with respect to the scaled moments comes from a phase transition between
ordered phase and disordered phase. It is pointed out that as concerns the
power-law behavior of... | 1992-12-15 | 2007-05-23 | [
"hep-ph"
] | E.R. Nakamura, K. Kudo, T. Hashimoto, I. Yoneda |
hep-ph/9212267 | Predictive Ansatz for Fermion Masses in SUSY GUTS | We reexamine a succesful fermion mass Ansatz proposed by Giudice for a wide
range of the ratio $tan\beta =\frac {<\bar h>}{<h>}$ (where ${\bar h},h$ are
the two standard higgs fields), in the context of supersymmetric grand unified
theories. We find that the 7 predictions of the ansatz, $V_{us}, V_{cb},
V_{ub}, m_u, m_... | 1992-12-15 | 2010-11-01 | [
"hep-ph"
] | G.K. Leontaris and N.D. Tracas |
hep-ph/9212258 | How unique are the MSW parameters ? | We investigate the effect of a possible large frozen-in magnetic field in the
core of the sun and a neutrino magnetic moment of the order of $10^{-10}$ Bohr
magneton on the MSW parameters. Such a possibility can completely depolarize
the $\nu_{eL}$ resulting in a factor of half of the emitted number. This in
combinatio... | 1992-12-14 | 2007-05-23 | [
"hep-ph"
] | P. K. Mohapatra |
hep-ph/9212257 | Small Momentum Evolution of the Extended Drell--Hearn--Gerasimov Sum
Rule | We investigate the momentum dependence of the extended Drell-Hearn-Gerasimov
sum rule. An economical formalism is developed which allows to express the
extended DHG sum rule in terms of a single virtual Compton amplitude in forward
direction. Rigorous results for the small momentum evolution are derived from
chiral per... | 1992-12-14 | 2016-08-14 | [
"hep-ph",
"nucl-th"
] | V\'eronique Bernard, Norbert Kaiser and Ulf-G. Mei{\ss}ner |
hep-ph/9212259 | Differentiating various extra $Z^{\prime}$'s at Future Colliders | We propose a way to differentiate between various extra $U(1)$ models using
flavor tagging in the decay modes $Z^{\prime}\rightarrow q{\bar{q}}$ once the
extra $Z^{\prime}$ is observed at future colliders in the lepton channel. A
generalization of the R parameter, namely, one for charge $\frac{1}{3}$ and one
for charge... | 1992-12-14 | 2014-11-17 | [
"hep-ph"
] | P. K. Mohapatra Pages 9 COLO-HEP-271 |
hep-ph/9212256 | Shedding light on quarkonium formation by producing a photon in
association | The process AB --> Quarkonium + photon + X, for a heavy quarkonium state such
as J/psi or Upsilon, is considered. The ratio of the cross-sections for this
process in pp and pp(bar) collisions is shown to be a vary sensitive probe of
models of quarkonium formation. | 1992-12-14 | 2009-10-22 | [
"hep-ph"
] | K. Sridhar |
hep-ph/9212261 | Signals for Virtual Leptoquark Exchange at Colliders | We study the effects of virtual leptoquark exchange on charged current and
neutral current processes at HERA, on di-lepton production at the Tevatron, and
on quark pair production at LEP II. We present the areas of parameter space
that can be excluded at these colliders by searching for deviations from
Standard Model e... | 1992-12-14 | 2007-05-23 | [
"hep-ph"
] | M.A. Doncheski and J.L. Hewett |
hep-ph/9212262 | Summary Talk: International Symposium on Neutrino Astrophysics,
Takayama/Kamioka (10/'92) | Contents:
1. The Conference
2. Solar Neutrinos
-A. Operating Experiments
-B. New Funded Experiments
-C. Are Solar Neutrino Fluxes Time Dependent?
-D. Have $pp$ Neutrinos Been Detected?
-E. Is Directionality Required for Astronomical Observations?
-F. Is There a Solar Neutrino Problem?
-G. What Have We... | 1992-12-14 | 2007-05-23 | [
"hep-ph",
"astro-ph"
] | John Bahcall |
hep-ph/9212260 | Constraints on the Charged Higgs Sector from B Physics | We present the bounds that can be obtained on the charged Higgs sector in
two-Higgs-Doublet Models from measurements at LEP of the decay $B\to D\tau\nu$,
and from searches by CLEO for the inclusive decay $b\to s\gamma$. | 1992-12-14 | 2007-05-23 | [
"hep-ph"
] | J.L. Hewett |
hep-ph/9212255 | Bose-Einstein Correlations for Mixed Neutral Mesons | Correlations are shown to arise in nonidentical mixed-particle pairs like
$K^o \bar K^o$ when observed in identical decay modes like $K_S K_S$ in
multiparticle final states containing many partial waves. No enhancement is
found in any single partial wave and all partial wave analyses of the s-wave
threshold resonance $... | 1992-12-13 | 2010-11-01 | [
"hep-ph"
] | Harry J. Lipkin |
hep-ph/9212254 | 2-loop Integrals in the Standard Model | We introduce in typical examples new methods for the calculation of massive
loop integrals appearing in the radiative correction calculations of the
Standard Model. | 1992-12-12 | 2011-04-20 | [
"hep-ph"
] | Dirk Kreimer |
hep-ph/9212253 | CP violating asymmetries in charged D meson decays | The CP violating asymmetries for Cabibbo suppressed charged D meson decays in
the standard model are estimated in the factorized approximation, using the
two-loop effective hamiltonian and a model for final state interactions
previously tested for Cabibbo allowed D decays. No new parameters are added.
The predictions a... | 1992-12-11 | 2008-11-26 | [
"hep-ph"
] | F. Buccella, M. Lusignoli, G. Mangano, G. Miele, A. Pugliese and P.
Santorelli |
hep-ph/9212251 | Spin in Perturbative QCD; Coherent Hard Diffraction | I briefly review: (a) some recent developments in the theory of hard
scattering in QCD with polarized beams, and (b) coherent hard diffraction (that
is, hard scattering in diffractive events, with the Pomeron behaving in an
apparently point-like fashion). | 1992-12-10 | 2007-05-23 | [
"hep-ph"
] | John C. Collins |
hep-ph/9212252 | 2 \to n threshold production at tree level | The threshold behavior of a theory with two coupled scalar fields $\chi$ and
$\phi$ is investigated. We compute the amplitude for two on-mass-shell
$\chi$-particles to produce an arbitrary number of $\phi$-particles at rest in
the tree approximation. | 1992-12-10 | 2009-10-22 | [
"hep-ph"
] | Lowell S. Brown and Chengxing Zhai |
hep-ph/9212247 | Neutrino Mixing | In the first part of these lectures the neutrino mixing hypothesis will be
considered in detail. We will discuss the possible schemes of neutrino mixing
and present the data of the recent experiments searching for effects due to
nonvanishing neutrino masses and mixing angles.In the second part of these
lectures the phy... | 1992-12-10 | 2007-05-23 | [
"hep-ph"
] | S.M. Bilenky |
hep-ph/9212250 | Relativistic Constituent Quark Model of Electroweak Properties of
Baryons | We calculate the electroweak properties of nucleons and hyperons in a
relativistic constituent quark model using the light-front formalism. The
parameters of the model, namely the constituent quark mass and the confinement
scale, can be uniquely chosen for both the electromagnetic and weak
experimental data. A consiste... | 1992-12-10 | 2014-11-17 | [
"hep-ph"
] | Felix Schlumpf |
hep-ph/9212248 | On the nature of the electroweak phase transition | We discuss the finite-temperature effective potential of the Standard Model,
$\veff$, with emphasis on the resummation of the most important infrared
contributions. We compute the one-loop scalar and vector boson self-energies in
the zero-momentum limit. By solving the corresponding set of gap equations,
with the inclu... | 1992-12-10 | 2010-11-01 | [
"hep-ph",
"hep-th"
] | J.R. Espinosa, M. Quiros and F. Zwirner |
hep-ph/9212246 | Heavy Quarks and Leptons at $e^+e^-$ Colliders | The production of massive quarks and leptons in $e^+e^-$ collisions is
studied using exact helicity amplitudes. Total cross sections as a function of
$y_{\rm cut}$, in both the JADE and the $k_T$ algorithms, are presented and
compared with massless results. Some invariant mass distributions are examined
in relation to ... | 1992-12-10 | 2009-10-22 | [
"hep-ph"
] | A. Ballestrero, E. Maina and S. Moretti |
hep-ph/9212245 | Inverse Hierarchy Approach to Fermion Masses | The first fermion family might play a special role in understanding the
physics of flavour. This possibility is suggested by the observation that the
up-down splitting within quark families increases with the family number: $
m_u\sim m_d$, $m_c>m_s$, $m_t\gg m_b$. We construct a model that realizes this
feature of the ... | 1992-12-10 | 2008-11-26 | [
"hep-ph"
] | Z. G. Berezhiani and R. Rattazzi |
hep-ph/9212244 | Consistent Quantum Expansion Around Soliton Solutions | I show that a standard application of the semiclassical techniques to 1+1
dimensional field theories, as originally discussed by Dashen, Hasslacher and
Neveu, explicitly violates the Poincare algebra. This problem is traced to the
incorrect regularization of the ultraviolet divergences and can be resolved by
using a di... | 1992-12-10 | 2007-05-23 | [
"hep-ph"
] | Pankaj Jain |
hep-ph/9212249 | Radiative $W$ and $Z$ Decays and Spontaneous R-Parity Violation | We point out that in a class of supersymmetric models where R-parity
violation is induced by the spontaneous breaking of local $B-L$ symmetry, the
R-parity violating $W$ decay $W\rightarrow\slep\gamma$ and $Z$ decay
$Z\rightarrow\snu\gamma$, forbidden in the minimal supersymmetric standard
model (MSSM), occur at an enh... | 1992-12-10 | 2007-05-23 | [
"hep-ph"
] | R.N. Mohapatra and T.G. Rizzo |
hep-ph/9212243 | High Energy Hadronic Helicity Violation: What Helicity Flip Form Factors
Measure | Orbital angular momentum is crucial for the description of several process at
large momentum transfer in the impulse approximation in perturbative QCD. We
review the mechanism of independent scattering which makes violation of the
helicity conservation rule possible at leading order - and without any need to
flip a qua... | 1992-12-10 | 2007-05-23 | [
"hep-ph"
] | Pankaj Jain, John P. Ralston and Bernard Pire |
hep-ph/9212242 | Polarization and Handedness in Tau -> 3 Pi + Neutrino Decay Produced in
e+e- Annihilations | We discuss the concept of handedness applied to $\tau$ production in $e^+e^-$
annihilations with $\tau$ decaying into $a_1\nu_\tau \to 3\pi\nu_\tau$. The
$a_1\to 3\pi$ decay is particularly interesting since it (together with $h_1\to
3\pi$) is the lightest hadronic decay in which the helicity of the initial
state can b... | 1992-12-09 | 2007-05-23 | [
"hep-ph"
] | N.A. Tornqvist |
hep-ph/9212237 | The Five Gluon Amplitude and One-Loop Integrals | We review the conventional field theory description of the string motivated
technique. This technique is applied to the one-loop five-gluon amplitude. To
evaluate the amplitude a general method for computing dimensionally regulated
one-loop integrals is outlined including results for one-loop integrals
required for the... | 1992-12-09 | 2007-05-23 | [
"hep-ph"
] | Z. Bern, L. Dixon and D.A. Kosower |
hep-ph/9212236 | Exotic QQ\qbar\qbar States in QCD | We show that QCD contains stable four-quark QQ\qbar\qbar hadronic states in
the limit where the heavy quark mass goes to infinity. (Here Q denotes a heavy
quark, \qbar a light antiquark and the stability refers only to the strong
interactions.) The long range binding potential is due to one pion exchange
between ground... | 1992-12-08 | 2010-11-01 | [
"hep-ph"
] | Aneesh V. Manohar and Mark B. Wise |
hep-ph/9212241 | Theoretical Implications of the Combined Solar Neutrino Observations | Constraints on the core temperature of the Sun and on neutrino-oscillation
parameters are obtained by comparing the combined Homestake, Kamiokande, SAGE
and GALLEX solar neutrino data with Standard Solar Models (SSM) and with
non-standard solar models parameterized by a phenomenological central
temperature ($T_c$). If ... | 1992-12-08 | 2009-04-13 | [
"hep-ph"
] | S.A. Bludman, N. Hata, D.C. Kennedy, P.G. Langacker |
hep-ph/9212240 | Cosmological and Astrophysical Bounds on Neutrino Masses and Lifetimes | The best upper bounds on the masses of stable and unstable light neutrinos
derive from the upper bound on the total mass density, as inferred from the
lower limit $t_0> 13$ Gyr on the dynamical age of the Universe: If the Universe
is matter-dominated, $m_\nu<35(23)\times$ max$ [1, (t_0/\tau_\nu)^{1/2}]$ eV,
according a... | 1992-12-08 | 2007-05-23 | [
"hep-ph"
] | Sidney A. Bludman |
hep-ph/9212238 | The chiral anomaly and electromagnetic pion decay in effective quark
models | Within renormalizable theories the triangle diagram correctly reproduces the
lifetime of the neutral pion $\pi ^0$. However, effective relativistic quark
models which contain a second scale besides the quark mass seem unable to give
the correct value for this quantity. In the Instanton Liquid Model this second
scale is... | 1992-12-08 | 2007-05-23 | [
"hep-ph"
] | R. Alkofer and H. Reinhardt |
hep-ph/9212234 | P and T Violation From Certain Dimension Eight Weinberg Operators | Dimension eight operators of the Weinberg type have been shown to give
important contributions to CP violating phenomena, such as the electric dipole
moment of the neutron. In this note we show how operators related to these (and
expected to occur on equal footing) can give rise to time-reversal violating
phenomena suc... | 1992-12-08 | 2009-12-30 | [
"hep-ph"
] | Michael J. Booth and Gerard Jungman |
hep-ph/9212239 | Minkowski Space Non-Abelian Classical Solutions with Non-Integer Winding
Number Change | Working in a spherically symmetric ansatz in Minkowski space we discover new
solutions to the classical equations of motion of pure $SU(2)$ gauge theory.
These solutions represent spherical shells of energy which at early times move
inward near the speed of light, excite the region of space around the origin at
interme... | 1992-12-08 | 2010-11-19 | [
"hep-ph",
"hep-th"
] | Edward Farhi, Valentin V. Khoze and Robert Singleton Jr |
hep-ph/9212235 | The Effective Potential and First-Order Phase Transitions: Beyond
Leading Order | Scenarios for electroweak baryogenesis require an understanding of the
effective potential at finite temperature near a first-order electroweak phase
transition. Working in Landau gauge, we present a calculation of the dominant
two-loop corrections to the ring-improved one-loop potential in the formal
limit $g^4 \ll \l... | 1992-12-08 | 2014-11-17 | [
"hep-ph"
] | Peter Arnold and Olivier Espinosa |
hep-ph/9212232 | The First Gauge Theory of Weak Interactions and the Prediction of Weak
Neutral Currents | The three theoretical and historical components of the Standard Model are the
exact chiral gauge theory of weak interactions, electroweak unification, and
the Higgs mechanism for spontaneous symmetry breaking. I put into historical
perspective my 1958 invention of the first gauge theory of weak interactions,
predicting... | 1992-12-07 | 2008-02-03 | [
"hep-ph"
] | S. A. Bludman |
hep-ph/9212233 | FSI phases and CP asymmetries in beauty: QCD point of view | Inclusive and exclusive decays of heavy flavours look quite different from a
theoretical viewpoint. We argue that inclusive decays can be treated
quantitatively and report on the calculation of the perturbative corrections to
the Final State Interaction phases in connection to their impact on effects of
CP violation. | 1992-12-07 | 2007-05-23 | [
"hep-ph"
] | N.G.Uraltsev |
hep-ph/9212231 | Applying Optimized Perturbation Theory to QCD at Low Energies | We discuss the use of the optimization procedure based on the Principle of
Minimal Sensitivity to the third-order calculation of {\mbox{${R_{e^+e^-}}$}}.
The effective coupling constant remains finite allowing us to apply the
Poggio-Quinn-Weinberg smearing method down to energies below 1 GeV, where we
find good agreeme... | 1992-12-07 | 2007-05-23 | [
"hep-ph"
] | A. C. Mattingly and P. M. Stevenson |
hep-ph/9212229 | One Loop Effects of Non-Standard Triple Gauge Boson Vertices | Low energy effects of generic extensions of the Standard Model can be
comprehensively parametrized in terms of higher dimensional effective
operators. After the success of all the recent precission tests on the Standard
Model, we argue that any sensible description of these extensions at the
Z-scale must be stable unde... | 1992-12-07 | 2014-11-17 | [
"hep-ph"
] | P. Hernandez and F.J. Vegas |
hep-ph/9212230 | Electromagnetic Mass Splittings in Heavy Mesons | The electromagnetic contribution to the isomultiplet mass splittings of heavy
mesons is reanalyzed within the framework of the heavy mass expansion.
It is shown that the leading term in the expansion is given to a good
approximation by the elastic term. $1/m_{Q}$-corrections can only be estimated,
the main source of ... | 1992-12-07 | 2014-11-17 | [
"hep-ph"
] | J. L. Goity |
hep-ph/9212228 | On the Statistics of CMB Fluctuations Induced by Topological Defects | We use the analytical model recently introduced in Ref. \cite{lp92}, to
investigate the statistics of temperature fluctuations on the cosmic microwave
background (CMB), induced by topological defects. The cases of cosmic strings
and textures are studied. We derive analytically the characteristic function of
the probabi... | 1992-12-07 | 2010-11-01 | [
"hep-ph",
"astro-ph"
] | Leandros Perivolaropoulos |
hep-ph/9212227 | A QCD ``Manifesto'' on Inclusive Decays of Beauty and Charm | A selfconsistent treatment of nonperturbative effects in inclusive
nonleptonic and semileptonic decays of beauty and charm hadrons is presented.
It is illustrated by calculating semileptonic branching ratios, lifetime
ratios, radiative decay rates and the lepton spectra in semileptonic decays. | 1992-12-06 | 2008-02-03 | [
"hep-ph"
] | I.I.Bigi, B.Blok, M.Shifman, N.G.Uraltsev and A.Vainshtein |
hep-ph/9212224 | Hydrodynamic Stability Analysis of Burning Bubbles in Electroweak Theory
and in QCD | Assuming that the electroweak and QCD phase transitions are first order, upon
supercooling, bubbles of the new phase appear. These bubbles grow to
macroscopic sizes compared to the natural scales associated with the Compton
wavelengths of particle excitations. They propagate by burning the old phase
into the new phase ... | 1992-12-05 | 2009-10-22 | [
"hep-ph"
] | P. Huet, K. Kajantie, R. G. Leigh, B.-H. Liu and L. McLerran |
hep-ph/9212225 | The Pion Cloud in Quenched QCD | Diagrammatic methods and Large $N_c$ QCD are used to argue that the nucleon
as calculated in quenched QCD contains physics which can be ascribed to the
pion cloud of the nucleon. In particular, it is argued that the physics
corresponding to one-pion loops in chiral perturbation theory are included in
the quenched appro... | 1992-12-05 | 2007-05-23 | [
"hep-ph",
"hep-lat"
] | Thomas D. Cohen and Derek B. Leinweber |
hep-ph/9212226 | Chiral Perturbation Theory Analysis of the Baryon Magnetic Moments | Nonanalytic $m_q^{1/2}$ and $m_q\ln m_q$ chiral corrections to the baryon
magnetic moments are computed. The calculation includes contributions from both
intermediate octet and decuplet baryon states. Unlike the one-loop
contributions to the baryon axial currents and masses, the contribution from
decuplet intermediate ... | 1992-12-05 | 2010-04-06 | [
"hep-ph"
] | Elizabeth Jenkins, Michael Luke, Aneesh V. Manohar and M.J. Savage |
hep-ph/9212223 | \cl{\bf $\tau\rightarrow\mu\mu{\bar\mu}$ and $\tau\rightarrow\mu e{\bar
e}$ Decays in String Models with $\e6$ Symmetry | A detailed analysis on the rare $\tau$ decay {\it via} $\taumue$ and
$\taumus$ in the string models with $\e6$ symmetry is reported. It is found
that $\Gamma(\taumue)\sim(6-7)\Gamma(\taumus)$ and these rates are in general
about 1000 times less than that of $\Gamma(\mu\rightarrow e\gamma)$. It is also
found that the ou... | 1992-12-04 | 2016-09-01 | [
"hep-ph"
] | Jizhi Wu, Shinichi Urano and Richard Arnowitt |
hep-ph/9212219 | Family Symmetry, Gravity, and the Strong CP Problem | We show how in a class of models Peccei--Quinn symmetry can be realized as an
automatic consequence of a gauged $U(1)$ family symmetry. These models provide
a solution to the strong CP problem either via a massless $u$--quark or via the
DFSZ invisible axion. The local family symmetry protects against potentially
large ... | 1992-12-04 | 2008-11-26 | [
"hep-ph"
] | K.S. Babu and S.M. Barr |
hep-ph/9212222 | Numerical study of radiative corrections in the low $Q^2$ region at HERA | A detailed numerical study of radiative corrections in the low $Q^2$ region
at the HERA $ep$ collider was performed. The specific case of the total
photoproduction cross section measurement was taken as an example. Two
different programs, TERAD91 and HERACLES4.2, were used to get an estimation of
the size of radiative ... | 1992-12-04 | 2015-06-25 | [
"hep-ph"
] | K.Charchula and J.Gajewski |
hep-ph/9212214 | Dynamics of the Cosmological Quark-Hadron Transition in a Matter
Dominated Universe: Distribution and Evolution of Baryon Inhomogeneities | We study the dynamics of the quark-hadron transition for a scenario in which
the Universe is matter dominated and a large amount of entropy is generated by
decaying particles of mass 1--10 TeV, as suggested by a large class of
superstring--inspired models. We estimate the nucleation rate and compute the
mean separation... | 1992-12-03 | 2009-10-22 | [
"hep-ph"
] | Ornella Pantano and Antonio Riotto |
hep-ph/9212215 | Constrained Instanton and Baryon Number Non--Conservation at High
Energies | Constrained Instanton and Baryon Number Non--Conservation at High Energies,
P.G.Silvestrov, BUDKERINP 92--92. The total cross-section for baryon number
violating processes at high energies is usually parametrized as
$\sigma_{total}\propto\exp(\frac{4\pi}{\alpha} F(\varepsilon))$, where
$\varepsilon =\sqrt{s}/E_0 , \,\,... | 1992-12-03 | 2009-10-22 | [
"hep-ph"
] | P.G.Silvestrov |
hep-ph/9212221 | Hamiltonian Effective Potential | A Hamiltonian effective potential (the logarithm of the square of the wave
functional) is defined and calculated at the tree and one loop levels in a
$\phi^4$ scalar field theory. The loop expansion for eigenfunctionals is
equivalent to the combination of WKB expansion and an expansion around constant
field configurati... | 1992-12-03 | 2009-10-22 | [
"hep-ph"
] | Beth Basista and Peter Suranyi (University of Cincinnati, Cincinnati,
OH, USA) |
hep-ph/9212217 | Recent Progress in Lattice QCD | I give a brief overview of the status of lattice QCD, concentrating on topics
relevant to phenomenology. I discuss the calculation of the light quark
spectrum, the lattice prediction of $\alpha_\MS(M_Z)$, and the calculation of
$f_B$. | 1992-12-03 | 2007-05-23 | [
"hep-ph",
"hep-lat"
] | Stephen Sharpe |
hep-ph/9212216 | Aspects of the Electroweak Phase Transition | Presented at the 1992 Meeting of the DPF, Fermilab. The electroweak phase
transition is reviewed in light of some recent developments. Emphasis is on the
issue whether the transition is first or second order and its possible role in
the generation of the baryon asymmetry of the universe. | 1992-12-03 | 2008-02-03 | [
"hep-ph"
] | Patrick Huet |
hep-ph/9212220 | Radiative Decays of the P-Wave Charmed Mesons | Minor (mainly numerical) corrections. | 1992-12-03 | 2009-10-22 | [
"hep-ph"
] | J.G.Korner, D.Pirjol and K.Schilcher |
hep-ph/9212218 | Non-Standard Physics and Nucleon Strangeness in Low-Energy PV Electron
Scattering | Contributions from physics beyond the Standard Model, strange quarks in the
nucleon, and nuclear structure effects to the left-right asymmetry measured in
parity-violating (PV) electron scattering from $\nuc{12}{C}$ and the proton are
discussed. It is shown how lack of knowledge of the distribution of strange
quarks in... | 1992-12-03 | 2014-11-17 | [
"hep-ph",
"nucl-th"
] | M. J. Musolf and T. W. Donnelly |
hep-ph/9212210 | Strangeness Conservation in Hot Nuclear Fireballs | A constraint between thermal fireball parameters arises from the requirement
that the balance of strangeness in a fireball is (nearly) zero. We study the
impact of this constraint on (multi-)strange (anti-)baryon multiplicities and
compare the hadron gas and quark-gluon plasma predictions. We explore the
relation betwe... | 1992-12-02 | 2009-10-09 | [
"hep-ph",
"hep-lat"
] | J. Letessier, A. Tounsi, U. Heinz, J. Sollfrank and J. Rafelski |
hep-ph/9212208 | Renormalization in the Gauged Nambu--Jona-Lasinio Model | Based on the Cornwall-Jackiw-Tomboulis effective potential, we extensively
study nonperturbative renormalization of the gauged Nambu-Jona-Lasinio model in
the ladder approximation with standing gauge coupling. Although the pure
Nambu-Jona-Lasinio model is not renormalizable, presence of the gauge
interaction makes it p... | 1992-12-02 | 2017-02-01 | [
"hep-ph"
] | Kei-ichi Kondo, Masaharu Tanabashi and Koichi Yamawaki |
hep-ph/9212213 | Electroweak Symmetry Breaking at the SSC and LHC | In this talk we survey the SSC and LHC signals and backgrounds for the
physics of electroweak symmetry breaking. We study the process $pp \rightarrow
WWX$ and compute the rate for the ``gold-plated'' signals $W^\pm \rightarrow
\ell^\pm \nu$ and $Z \rightarrow \ell^+\ell^-$ $(\ell = e,\mu)$ for a wide
variety of models.... | 1992-12-02 | 2007-05-23 | [
"hep-ph"
] | Jonathan A. Bagger |
hep-ph/9212212 | Diffractive Hard Scattering with a Coherent Pomeron | Diffractive scattering involves exchange of a Pomeron to make a rapidity gap.
It is normally assumed that to get a hard scattering in diffraction, one may
treat the Pomeron as an ordinary particle, which has distributions of gluons
and quarks. We show that this is not so: When we use perturbative QCD, there is
a breakd... | 1992-12-02 | 2009-10-22 | [
"hep-ph"
] | John C. Collins, Leonid Frankfurt, Mark Strikman |
hep-ph/9212211 | Non Linear Realizations of $SU(2)\times U(1)$ in the MSSM: Model
Independent Analysis and $g-2$ of $W$ Bosons | We perform a model-independent analysis of the spontaneously broken phase of
an $SU(2)\times U(1)$ supersymmetric gauge theory, by using a non-linear
parametrization of the Goldstone sector of the theory. The non-linear variables
correspond to an $SL(2,C)$ superfield matrix in terms of which a non-linear
Lagrangian can... | 1992-12-02 | 2009-10-22 | [
"hep-ph"
] | Sergio Ferrara, Antonio Masiero, Massimo Porrati |
hep-ph/9212209 | A Non-Commutative Geometric Approach to Left-Right Symmetric Weak
Interactions | By combining the generalized exterior algebra of forms over a noncommutative
algebra with the gauging of discrete directions and the associated Higgs
fields, we consider the construction of the bosonic sector of left-right
symmetric models of the form $SU(2)_{L}\otimes SU(2)_{R}\otimes U(1)$. We see
that within this fo... | 1992-12-02 | 2009-10-22 | [
"hep-ph"
] | B. E. Hanlon and G. C. Joshi |
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