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24 papers · 2 filters
Lepton Flavor Violation and Fermion Masses
Stuart Raby
Lepton flavor violation may be a signature of "GUT scale" physics, if the messenger scale for SUSY breaking is above the "GUT scale." We elaborate on the details of this simple sta…
Gauge-mediated SUSY Breaking with a Gluino LSP
S. Raby
In gauge-mediated SUSY breaking models, messengers transmit SUSY breaking from a partially hidden sector to the standard model sector via common standard model gauge interactions.…
A Gauge Mediation Model of Dynamical Supersymmetry Breaking without Color Instability
Yasunori Nomura, K. Tobe, T. Yanagida
We construct a gauge mediation model of dynamical supersymmetry breaking (DSB) based on a vector-like gauge theory, in which there is a unique color-preserving true vacuum. The DSB…
Renormalons in Electromagnetic Annihilation Decays of Quarkonium
Eric Braaten, Yu-Qi Chen
We study the large-order asymptotic behavior of the perturbation series for short-distance coefficients in the NRQCD factorization formulas for the decays J/psi --> e^+e^- and eta_…
Measurement of the form-factor ratios for D^+ -> \overline K^{*0}e^+ν_e
Fermilab E791 Collaboration, E. M. Aitala
We present a measurement of the form-factor ratios r_V=V(0)/A_1(0) and r_2=A_2(0)/A_1(0) for the decay D^+ -> \overline K^{*0} e^+ ν_e. The measurement is based on a signal of appr…
Effects of Massive Gluons on Quarkonia in Light-Front QCD
Martina M. Brisudova, Sergio Szpigel, Robert J. Perry
A constituent parton picture of hadrons with logarithmic confinement arises naturally in light-front QCD when the hamiltonian is computed using a perturbative renormalization group…