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  • PhysRevLett.114.051803

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Measurement of the forward-backward asymmetry in the production of B± mesons in pp¯ collisions at s√=1.96  TeV

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  • D0 Collaboration
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Article number051803
<mark>Journal publication date</mark>4/02/2015
<mark>Journal</mark>Physical Review Letters
Issue number5
Volume114
Number of pages8
<mark>State</mark>Published
<mark>Original language</mark>English

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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8 pages, 3 figures, submitted to Phys. Rev. Lett © 2015 American Physical Society