Bounds from t t production on R-parity violating models of supersymmetry · arXivDeskhep-ph/9608352Aug 17, 199612 pages, Latex, 3 postscript figures
Bounds from ttˉ production on R-parity violating models of supersymmetry
Dilip Kumar Ghosh, Sreerup Raychaudhuri, K. Sridhar
Abstract
We study ttˉ production in R-parity violating supersymmetry. The annihilation channel qqˉ→ttˉ
gets new contributions from
-channel exchange of squarks or sleptons. With the data from Tevatron on
production, we find that the squark- or slepton-exchange processes constrain the
-violating
couplings or the
-violating
couplings, respectively. Our bounds are already comparable to the few existing constraints on third-generation
-parity violating couplings, and will improve when more precise measurements of the
production cross-section become available. We also discuss the effects of these couplings for top production at the LHC.