Measurement of the anomalous like-sign dimuon charge asymmetry with 9 fb^-1 of p pbar collisions - Université Clermont Auvergne Accéder directement au contenu
Article Dans Une Revue Physical Review D Année : 2011

Measurement of the anomalous like-sign dimuon charge asymmetry with 9 fb^-1 of p pbar collisions

V. Abazov
  • Fonction : Auteur
E. Kajfasz
P. Verdier

Résumé

We present an updated measurement of the anomalous like-sign dimuon charge asymmetry Aslb for semi-leptonic $b$-hadron decays in 9.0 fb^-1 of p pbar collisions recorded with the D0 detector at a center-of-mass energy of sqrt{s} = 1.96 TeV at the Fermilab Tevatron collider. We obtain Aslb = (-0.787 +- 0.172(stat) +- 0.093 (syst))%. This result differs by 3.9 standard deviations from the prediction of the standard model and provides evidence for anomalously large CP violation in semi-leptonic neutral B decay. The dependence of the asymmetry on the muon impact parameter is consistent with the hypothesis that it originates from semi-leptonic b-hadron decays.
Fichier principal
Vignette du fichier
1106.6308.pdf (469.85 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

in2p3-00605336 , version 1 (20-09-2023)

Identifiants

Citer

V. Abazov, G. Bernardi, D. Brown, J. Brown, Y. Enari, et al.. Measurement of the anomalous like-sign dimuon charge asymmetry with 9 fb^-1 of p pbar collisions. Physical Review D, 2011, 84, pp.052007. ⟨10.1103/PhysRevD.84.052007⟩. ⟨in2p3-00605336⟩
25 Consultations
1 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More