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33 papers · 1 filter
N-point matrix elements of dynamical vertex operators of the higher spin XXZ model
A. H. Bougourzi
We extend the concept of conjugate vertex operators, first introduced by Dotsenko in the case of the bosonization of the conformal field theory, to the bosonization of the…
A Note on the QCD Corrections to Forward--Backward Asymmetries of Heavy--Quark Jets in Z Decays
A. Djouadi, B. Lampe, P. M. Zerwas
The measurement of the forward-backward asymmetries of heavy quarks provides one of the most precise determinations of in decays. We discuss in detail the one--loop…
Higgs and Z boson decays into light gluinos
A. Djouadi, M. Drees
We calculate the decay rate of scalar and pseudoscalar Higgs bosons into a pair of gluinos, within the Minimal Supersymmetric Standard Model. In the theoretically and experimentall…
Free-Field Representation of Group Element for Simple Quantum Group
Alexei Morozov, Luc Vinet
A representation of the group element (also known as ``universal -matrix'') which satisfies , is given in the form $$ g = \left(\prod_{s=1}^{d_B}\phant…
Extracting the Intermediate-Mass Higgs Resonance at Photon-Photon Colliders
M. Baillargeon, G. Belanger, F. Boudjema
We address the problem of how to extract the signal of a Higgs within the intermediate mass range at a photon-photon collider that has a wide energy spectrum. All backgrounds from…
Implications of the Top Quark Mass Measurement for the CKM Parameters, and CP Asymmetries
A. Ali, D. London
Motivated by the recent determination of the top quark mass by the CDF collaboration, $\mt =174 \pm 10 ^{+13}_{-12}$ GeV, we review and update the constraints on the parameters of…
On the Coleman-Hill Theorem
Avinash Khare, R. MacKenzie, M. B. Paranjape
The Coleman-Hill theorem prohibits the appearance of radiative corrections to the topological mass (more precisely, to the parity-odd part of the vacuum polarization tensor at zero…
On a Bosonic-Parafermionic Realization of
A. Hamid Bougourzi, Luc Vinet
We realize the current algebra at arbitrary level in terms of one deformed free bosonic field and a pair of deformed parafermionic fields. It is shown that t…
The Conformal Group SU(2,2) and Integrable Systems on a Lorentzian Hyperboloid
M. A. del Olmo, M. A. Rodriguez, P. Winternitz
Eleven different types of "maximally superintegrable" Hamiltonian systems on the real hyperboloid are obtained. All of them correspond to a free…
The Dynamical Correlation Function of the XXZ Model
Robert A. Weston, A. H. Bougourzi
We perform a spectral decomposition of the dynamical correlation function of the spin XXZ model into an infinite sum of products of form factors. Beneath the four-particle th…
Leading electroweak correction to Higgs boson production at proton colliders
A. Djouadi, P. Gambino
At proton colliders, Higgs particles are dominantly produced in the gluon--gluon fusion mechanism. The Higgs--gluons coupling is mediated by heavy quark loops, and the process can…
QCD corrections to Higgs boson self--energies and fermionic decay widths
A. Djouadi, P. Gambino
We present the QCD corrections to Higgs boson self-energies for arbitrary momentum transfer and for different internal quark masses, to treat the case of CP--even, CP--odd and char…
Higgs particles at future hadron and electron-positron colliders
A. Djouadi
The prospects for discovering Higgs particles and studying their fundamental properties at future high-energy electron-positron and hadron colliders are reviewed. Both the Standard…
Effective potential for nonrelativistic non-Abelian Chern-Simons matter system in constant background fields
D. Caenepeel, M. Leblanc
We present the effective potential for nonrelativistic matter coupled to non-Abelian Chern-Simons gauge fields. We perform the calculation using a functional method in constant bac…
CP Violation in the B System: What's Old, What's New?
David London
I review the many ways of obtaining information about the CKM matrix through CP violation in the system. I include direct and indirect CP violation, the role of penguins and is…
--Matrix Construction of Electromagnetic Models for the Painlevé Transcendents
J. Harnad, M. Routhier
The Painlevé transcendents $P_{\rom{I}}$--$P_{\rom{V}}$ and their representations as isomonodromic deformation equations are derived as nonautonomous Hamiltonian systems from the c…
A Quantum Analogue of the Boson-Fermion Correspondence
A. Hamid Bougourzi, Luc Vinet
We review the classical boson-fermion correspondence in the context of the current algebra at level 2. This particular algebra is ideal to exhibit this correspond…
Hyperspherical Harmonics, Separation of Variables and the Bethe Ansatz
J. Harnad, P. Winternitz
The relation between solutions to Helmholtz's equation on the sphere and the $[{\gr sl}(2)]^n$ Gaudin spin chain is clarified. The joint eigenfuctions of the Laplacian an…
Parity violation, anyon scattering and the mean field approximation
D. Caenepeel, R. MacKenzie
Some general features of the scattering of boson-based anyons with an added non-statistical interaction are discussed. Periodicity requirements of the phase shifts are derived, and…
Low Energy Nucleon-Nucleon Scattering with the Skyrme Model in the Geodetic Approximation
T. Gisiger, M. B. Paranjape
We calculate nucleon-nucleon scattering at low energies and large impact parameter in the Skyrme model within the framework for soliton scattering proposed by Manton. This correspo…
Weak Coupling Phase from Decays of Charged B Mesons to and
Michael Gronau, Jonathan L. Rosner, David London
The theory of violation based on phases in weak couplings in the Cabibbo-Kobayashi-Maskawa (CKM) matrix requires the phase (in a standard convent…
Measuring Strong and Weak Phases in Time-Independent B Decays
Oscar F. Hernandez, David London, Michael Gronau +1
Flavor SU(3) symmetry implies certain relations among -decay amplitudes to , and final states, when annihilation-like diagrams are neglected. Using three t…
Dynamical Mass Generation for Non-Abelian Gauge Fields without the Higgs
Didier Caenepeel, Martin Leblanc
We present an alternative to the Higgs mechanism to generate masses for non-abelian gauge fields in (3+1)-dimensions. The initial Lagrangian is composed of a fermion with current-c…
From Multiloop Spinor Helicity Technique to String Reorganization
C. S. Lam
The success of the spinor helicity technique for tree processes is reviewed. To apply it to multiloop diagrams one is naturally led to the Schwinger proper-time representation, who…