We study the Higgs boson effects on third-generation squark-pair production in proton-proton collision at the CERN Large Hadron Collider (LHC), including \Stop\Stop∗, \Stop\Sbot∗, and \Sbot\Sbot∗. We found that substantial enhancement can be obtained through s-channel exchanges of Higgs bosons at large tanβ, at which the enhancement mainly comes from bbˉ, bcˉ, and cbˉ initial states. We compute the complete set of electroweak (EW) contributions to all production channels. This completes previous computations in the literature. We found that the EW contributions can be significant and can reach up to 25% in more general scenarios and at the resonance of the heavy Higgs boson. The size of Higgs enhancement is comparable or even higher than the PDF uncertainties and so must be included in any reliable analysis. A full analytical computation of all the EW contributions is presented.
@article{arxiv.0911.1820,
title = {Higgs boson enhancement effects on squark-pair production at the LHC},
author = {Abdesslam Arhrib and Rachid Benbrik and Kingman Cheung and Tzu-Chiang Yuan},
journal= {arXiv preprint arXiv:0911.1820},
year = {2014}
}