High pT Production of bb at LHC and New SU(3) Bosons

الأصل · EN

We discuss the potential of measurements of σ(p p -> bb) to constrain new bosonic degrees of freedom at the LHC when pT > √s/11 TeV for a pseudorapidity cut |η| < 2.4. By suppressing the NLO QCD production of bb pairs through simple kinematic constraints we show how to more efficiently exploit CMS's reach out to 1.5 TeV in pT for B mesons in searches for new physics. Using this technique we investigate the potential for discovery of new massive spin one and spin zero SUc(3) octet bosons by analyzing their effect on the dσ(p p -> bb)/d pT² distribution. In some cases, the tree level contributions are small and the largest effect of new physics on the pT tail of the distribution is due to one-loop resonant s-channel production or interference effects with the LO standard model production mechanisms qq, g g -> bb. We explore this possibility in some detail when the standard model is extended with an (8,2)₁/₂ scalar motivated by Minimal Flavor Violation.