Asymmetric heavy-quark hadroproduction at LHCb: predictions and applications

Gauld, Rhorry; Haisch, Ulrich; Pecjak, Benjamin D.

Abstract

We present a phenomenological analysis of asymmetric bottom- and charm-quark production within the LHCb acceptance relevant for pp collisions at s√=13 TeV. Predictions are provided for both anti-kt bottom- and charm-jet pairs, which are kept differentially with respect to the invariant mass of the jet pair. It is quantified how data in this region can provide sensitivity to the couplings of the Z boson to heavy quarks, and we investigate what precision is needed to compete with LEP. We also discuss how asymmetry and rate measurements can provide constraints on a particular class of new-physics models, which contains gauge bosons with small/moderate couplings to light/heavy quarks and masses of the order of 100GeV. Predictions are obtained including all relevant QCD and QED/weak contributions up to next-to-leading order, which have been implemented in a Fortran code which allows to directly compute the asymmetric cross sections. We provide all relevant analytic formulas for our computations.

Citation

Gauld, R., Haisch, U., & Pecjak, B. D. (2019). Asymmetric heavy-quark hadroproduction at LHCb: predictions and applications. Journal of High Energy Physics, 2019(3), Article 166. https://doi.org/10.1007/jhep03%282019%29166

• Journal Article Type: Article
• Acceptance Date: Mar 25, 2019
• Online Publication Date: Mar 26, 2019
• Publication Date: Mar 31, 2019
• Deposit Date: Apr 12, 2019
• Publicly Available Date: Apr 12, 2019
• Journal: Journal of High Energy Physics
• Print ISSN: 1126-6708
• Electronic ISSN: 1029-8479
• Publisher: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
• Peer Reviewed: Peer Reviewed
• Volume: 2019
• Issue: 3
• Article Number: 166
• DOI: https://doi.org/10.1007/jhep03%282019%29166
• Public URL: https://durham-repository.worktribe.com/output/1303806