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Asymmetric heavy-quark hadroproduction at LHCb: predictions and applications

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

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Rhorry Gauld

Ulrich Haisch


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.


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.

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
Publisher Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Peer Reviewed Peer Reviewed
Volume 2019
Issue 3
Article Number 166


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Copyright Statement
This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.

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