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Measurement of the Forward-Backward Asymmetry in the Production lof B-+/- Mesons in p(p)over-bar Collisions at root s=1.96 TeV
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2015 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 114, no 5Article in journal (Refereed) Published
Abstract [en]

We present a measurement of the forward-backward asymmetry in the production of B-+/- mesons, A(FB)(B-+/-) using B-+/- -> J/ Psi K-+/- decays in 10.4 fb(-1) of p (p) over bar collisions at root 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) over bar antiquark, to be produced in the direction of the proton beam. We extract A(FB) (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: A(FB) (B-+/-) = [-0.24 +/- 0.41 (stat) +/- 0.19 (syst)] %.

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2015. Vol. 114, no 5
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URN: urn:nbn:se:uu:diva-246803DOI: 10.1103/PhysRevLett.114.051803ISI: 000349249500007PubMedID: 25699435OAI: oai:DiVA.org:uu-246803DiVA: diva2:797155
Available from: 2015-03-23 Created: 2015-03-10 Last updated: 2015-03-23Bibliographically approved

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