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Measurement of the Forward-Backward Asymmetry in the Production of B± Mesons in pp¯ Collisions at s√=1.96 TeV
D0 Collaboration Abazov, V. M. Abbott, B. Acharya, B. S. Adams, M. Adams, T. Baringer, Philip S. Bean, Alice Chen, G. Clutter, Justace Randall
D0 Collaboration
Abazov, V. M.
Abbott, B.
Acharya, B. S.
Adams, M.
Adams, T.
Baringer, Philip S.
Bean, Alice
Chen, G.
Clutter, Justace Randall
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Abstract
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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2015-02-04
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American Physical Society (APS)
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Abazov_2015_APS.pdf
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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