Home > Research > Publications & Outputs > Measurement of the forward-backward asymmetry i...

Electronic data

  • PhysRevLett.114.051803

    Rights statement: © 2015 American Physical Society

    Final published version, 318 KB, PDF document


Text available via DOI:


View graph of relations

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

Research output: Contribution to Journal/MagazineJournal articlepeer-review

  • D0 Collaboration
Article number051803
<mark>Journal publication date</mark>4/02/2015
<mark>Journal</mark>Physical review letters
Issue number5
Number of pages8
Publication StatusPublished
<mark>Original language</mark>English


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)]%.

Bibliographic note

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