Header

UZH-Logo

Maintenance Infos

Measurement of the B0s→μ+μ− branching fraction and search for B0→μ+μ− decays at the LHCb experiment


LHCb Collaboration; et al; Bernet, R; Müller, K; Steinkamp, O; Straumann, U; Vollhardt, A (2013). Measurement of the B0s→μ+μ− branching fraction and search for B0→μ+μ− decays at the LHCb experiment. Physical Review Letters, 11:101805.

Abstract

A search for the rare decays B0s→μ+μ− and B0→μ+μ− is performed at the LHCb experiment. The data analyzed correspond to an integrated luminosity of 1  fb−1 of pp collisions at a center-of-mass energy of 7 TeV and 2  fb−1 at 8 TeV. An excess of B0s→μ+μ− signal candidates with respect to the background expectation is seen with a significance of 4.0 standard deviations. A time-integrated branching fraction of B(B0s→μ+μ−)=(2.9+1.1−1.0)×10−9 is obtained and an upper limit of B(B0→μ+μ−)<7.4×10−10 at 95% confidence level is set. These results are consistent with the standard model expectations.

Abstract

A search for the rare decays B0s→μ+μ− and B0→μ+μ− is performed at the LHCb experiment. The data analyzed correspond to an integrated luminosity of 1  fb−1 of pp collisions at a center-of-mass energy of 7 TeV and 2  fb−1 at 8 TeV. An excess of B0s→μ+μ− signal candidates with respect to the background expectation is seen with a significance of 4.0 standard deviations. A time-integrated branching fraction of B(B0s→μ+μ−)=(2.9+1.1−1.0)×10−9 is obtained and an upper limit of B(B0→μ+μ−)<7.4×10−10 at 95% confidence level is set. These results are consistent with the standard model expectations.

Statistics

Citations

157 citations in Scopus®
Google Scholar™

Altmetrics

Downloads

20 downloads since deposited on 21 Feb 2014
7 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 08:19
Last Modified:08 Dec 2017 08:11
Publisher:American Physical Society
ISSN:0031-9007
Publisher DOI:https://doi.org/10.1103/PhysRevLett.111.101805

Download

Download PDF  'Measurement of the B0s→μ+μ− branching fraction and search for B0→μ+μ− decays at the LHCb experiment'.
Preview
Content: Published Version
Filetype: PDF
Size: 284kB
View at publisher