Header

UZH-Logo

Maintenance Infos

First observation of CP violation in the decays of Bs mesons


LHCb Collaboration; et al; Bernet, R; Steinkamp, O; Müller, K; Straumann, U; Vollhardt, A (2013). First observation of CP violation in the decays of Bs mesons. Physical Review Letters, 110:221601.

Abstract

Using pp collision data corresponding to an integrated luminosity of 1.0  fb−1 and collected by LHCb in 2011 at a center-of-mass energy of 7 TeV, we report the measurement of direct CP violation in B0s→K−π+ decays, ACP(B0s→K−π+)=0.27±0.04 (stat)±0.01 (syst), with significance exceeding 5 standard deviations. This is the first observation of CP violation in the decays of B0s mesons. Furthermore, we provide an improved determination of direct CP violation in B0→K+π− decays, ACP(B0→K+π−)=−0.080±0.007 (stat)±0.003 (syst), which is the most precise measurement of this quantity to date.

Abstract

Using pp collision data corresponding to an integrated luminosity of 1.0  fb−1 and collected by LHCb in 2011 at a center-of-mass energy of 7 TeV, we report the measurement of direct CP violation in B0s→K−π+ decays, ACP(B0s→K−π+)=0.27±0.04 (stat)±0.01 (syst), with significance exceeding 5 standard deviations. This is the first observation of CP violation in the decays of B0s mesons. Furthermore, we provide an improved determination of direct CP violation in B0→K+π− decays, ACP(B0→K+π−)=−0.080±0.007 (stat)±0.003 (syst), which is the most precise measurement of this quantity to date.

Statistics

Citations

67 citations in Web of Science®
71 citations in Scopus®
Google Scholar™

Altmetrics

Downloads

37 downloads since deposited on 21 Feb 2014
13 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2013
Deposited On:21 Feb 2014 09:37
Last Modified:08 Dec 2017 08:13
Publisher:American Physical Society
ISSN:0031-9007
Publisher DOI:https://doi.org/10.1103/PhysRevLett.110.221601

Download

Download PDF  'First observation of CP violation in the decays of Bs mesons'.
Preview
Content: Published Version
Filetype: PDF
Size: 297kB
View at publisher