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Bounds from $t \bar t$ production on R-parity violating models of supersymmetry

Dilip Kumar Ghosh·Sreerup Raychaudhuri·K. Sridhar
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Abstract

We study $t \bar t$ production in R-parity violating supersymmetry. The annihilation channel $q \bar q \rightarrow t \bar t$ gets new contributions from $t$-channel exchange of squarks or sleptons. With the data from Tevatron on $t \bar t$ production, we find that the squark- or slepton-exchange processes constrain the $B$-violating $λ''$ couplings or the $L$-violating $λ'$ couplings, respectively. Our bounds are already comparable to the few existing constraints on third-generation $R$-parity violating couplings, and will improve when more precise measurements of the $t \bar t$ production cross-section become available. We also discuss the effects of these couplings for top production at the LHC.

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Dilip Kumar Ghosh, Sreerup Raychaudhuri, K. Sridhar. 1996-08-17. Bounds from $t \bar t$ production on R-parity violating models of supersymmetry. https://doi.org/10.1016/s0370-2693(97)00117-2

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