Measurement of the Forward-Backward Asymmetry in the Production of B± Mesons in pp¯ Collisions at s√=1.96 TeV

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Issue Date
2015-02-04Author
D0 Collaboration
Abazov, V. M.
Abbott, B.
Acharya, B. S.
Adams, M.
Adams, T.
Baringer, Philip S.
Bean, Alice
Chen, G.
Clutter, Justace Randall
Sekaric, Jadranka
Wilson, Graham Wallace
Publisher
American Physical Society (APS)
Type
Article
Article Version
Scholarly/refereed, publisher version
Rights
© 2015 American Physical Society
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Show full item recordAbstract
We present a measurement of the forward-backward asymmetry in the production of B± mesons, AFB(B±), using B±→J/ψK± decays in 10.4 fb−1 of pp¯ collisions at s√=1.96 TeV collected by the D0 experiment during Run II of the Tevatron collider. A nonzero asymmetry would indicate a preference for a particular flavor, i.e., b quark or b¯ antiquark, to be produced in the direction of the proton beam. We extract AFB(B±) from a maximum likelihood fit to the difference between the numbers of forward- and backward-produced B± mesons. We measure an asymmetry consistent with zero: AFB(B±)=[−0.24±0.41 (stat)±0.19 (syst)]%.
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Citation
Abazov, V. M., Abbott, B., Acharya, B. S., Adams, M., Adams, T., Agnew, J. P., … Askew, A. (2015). Measurement of the Forward-Backward Asymmetry in the Production of B ± Mesons in p p ¯ Collisions at s = 1.96 TeV . Physical Review Letters, 114(5). doi:10.1103/physrevlett.114.051803
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