Measurement of the forward-backward asymmetry in the production of B(±) mesons in ppÌ collisions at âs=1.96 TeV.
Phys Rev Lett
; 114(5): 051803, 2015 Feb 06.
Article
em En
| MEDLINE
| ID: mdl-25699435
ABSTRACT
We present a measurement of the forward-backward asymmetry in the production of B(±) mesons, A(FB)(B(±)), using B(±)âJ/ψK(±) decays in 10.4 fb(-1) of ppÌ collisions at sqrt[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 Ìb 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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Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article