scispace - formally typeset
Open AccessJournal ArticleDOI

Measurement of the anomalous like-sign dimuon charge asymmetry with 9 fb(-1) of p(p)over-bar collisions

V. M. Abazov, +435 more
- 16 Sep 2011 - 
- Vol. 84, Iss: 5, pp 052007
Reads0
Chats0
TLDR
In this article, the anomalous like-sign dimuon charge asymmetry for semileptonic b-hadron decays in 9.0 fb(-1) of p (p) over bar collisions recorded with the D0 detector at a center-of-mass energy of root s = 1.96 TeV at the Fermilab Tevatron collider.
Abstract
We present an updated measurement of the anomalous like-sign dimuon charge asymmetry A(sl)(b) for semileptonic b-hadron decays in 9.0 fb(-1) of p (p) over bar collisions recorded with the D0 detector at a center-of-mass energy of root s = 1.96 TeV at the Fermilab Tevatron collider. We obtain A(sl)(b) = (-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 semileptonic neutral B decay. The dependence of the asymmetry on the muon impact parameter is consistent with the hypothesis that it originates from semileptonic b-hadron decays.

read more

Content maybe subject to copyright    Report

Citations
More filters
Journal ArticleDOI

Implications of LHCb measurements and future prospects

A. Bharucha, +761 more
TL;DR: The first results from LHCb have made a significant impact on the flavour physics landscape and have definitively proved the concept of a dedicated experiment in the forward region at a hadron collider.
Journal ArticleDOI

Electroweak baryogenesis in two Higgs doublet models and B meson anomalies

TL;DR: In this article, the authors examined the potential for two Higgs doublet models (2HDMs) to achieve successful electroweak baryogenesis (EWBG) while explaining the dimuon anomaly.
Journal ArticleDOI

Implications of LHCb measurements and future prospects

A. Bharucha, +766 more
TL;DR: The first results from LHCb have made a significant impact on the flavour physics landscape and have definitively proved the concept of a dedicated experiment in the forward region at a hadron collider as mentioned in this paper.
Journal ArticleDOI

CPviolation in theBs0system

TL;DR: In this article, the authors review the many studies of $C\phantom{\rule{0}{0ex}}P$ violation beyond those of the standard model of particle physics.
Journal ArticleDOI

C P violation in the B s 0 system

TL;DR: In this paper, experimental and theoretical studies of CP violation in the B0s system are reviewed and updated predictions for the mixing parameters of the B 0s mesons expected in the standard model (SM) are given, namely, the mass difference ΔMSMs=18.3±2.7, the decay rate difference ΔΓSMs=0.085± 0.015, and the flavor-specific CP asymmetry as,SMfs=(2.22±0.27)×10−5).
References
More filters
Related Papers (5)