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Beauty-quark and charm-quark pair production asymmetries at LHCb

Gauld, Rhorry; Haisch, Ulrich; Pecjak, Ben D.; Re, Emanuele

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Authors

Rhorry Gauld

Ulrich Haisch

Emanuele Re



Abstract

The LHCb Collaboration has recently performed a first measurement of the angular production asymmetry in the distribution of beauty quarks and antiquarks at a hadron collider. We calculate the corresponding standard model prediction for this asymmetry at fixed order in perturbation theory. Our results show good agreement with the data, which are provided differentially for three bins in the invariant mass of the bb¯ system. We also present similar predictions for both beauty-quark and charm-quark final states within the LHCb acceptance for a collision energy of s√=13  TeV. We finally point out that a measurement of the ratio of the bb¯ and cc¯ cross sections may be useful for experimentally validating charm-tagging efficiencies.

Citation

Gauld, R., Haisch, U., Pecjak, B. D., & Re, E. (2015). Beauty-quark and charm-quark pair production asymmetries at LHCb. Physical Review D, 92(3), Article 034007. https://doi.org/10.1103/physrevd.92.034007

Journal Article Type Article
Publication Date Aug 1, 2015
Deposit Date Dec 9, 2015
Publicly Available Date Feb 19, 2016
Journal Physical Review D
Print ISSN 2470-0010
Electronic ISSN 2470-0029
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 92
Issue 3
Article Number 034007
DOI https://doi.org/10.1103/physrevd.92.034007
Related Public URLs http://arxiv.org/abs/1505.02429

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.





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