Details

Autor(en) / Beteiligte

• Kumar Ghosh, Dilip
• Raychaudhuri, Sreerup
• Sridhar, K.

Titel

Bounds from [formula omitted] production on R-parity violating models of supersymmetry

Ist Teil von

• Physics letters. B, , Vol.396 (1), p.177-182

Ort / Verlag

Elsevier B.V

Link zum Volltext

Quelle

Elsevier Journal Backfiles on ScienceDirect (DFG Nationallizenzen)

Beschreibungen/Notizen

• We study t t production in R-parity violating supersymmetry. The annihilation channel q q → t t gets new contributions from t-channel exchange of squarks or sleptons. With the data from Tevatron on t t production, we find that the squarkor slepton-exchange processes constrain the B-violating λ″ couplings or the L-violating λ′ couplings, respectively. In the relevant region of the MSSM parameter space, 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 t production cross-section become available. We also discuss the effects of these couplings for top production at the LHC.