CaltechAUTHORS
  A Caltech Library Service

Measurement of the B^0_s → µ^+µ^- Branching Fraction and Search for B^0 → µ^+µ^- with the CMS Experiment

Chatrchyan, S. and Apresyan, A. and Bornheim, A. and Bunn, J. and Chen, Y. and Di Marco, E. and Duarte, J. and Kcira, D. and Ma, Y. and Mott, A. and Newman, H. B. and Pena, C. and Rogan, C. and Spiropulu, M. and Timciuc, V. and Veverka, J. and Wilkinson, R. and Xie, S. and Zhu, R. Y. and Dias, F. A. and Dubinin, M. (2013) Measurement of the B^0_s → µ^+µ^- Branching Fraction and Search for B^0 → µ^+µ^- with the CMS Experiment. Physical Review Letters, 111 (10). Art. No. 101804. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:20131021-150338537

[img]
Preview
PDF - Published Version
Creative Commons Attribution.

555Kb
[img]
Preview
PDF - Submitted Version
See Usage Policy.

677Kb
[img] Plain Text - Supplemental Material
See Usage Policy.

28Kb
[img]
Preview
PDF - Supplemental Material
See Usage Policy.

253Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20131021-150338537

Abstract

Results are presented from a search for the rare decays B_s^0→μ^+μ^- and B^0→μ^+μ^- in pp collisions at √s=7 and 8 TeV, with data samples corresponding to integrated luminosities of 5 and 20  fb^(-1), respectively, collected by the CMS experiment at the LHC. An unbinned maximum-likelihood fit to the dimuon invariant mass distribution gives a branching fraction B(B_s^0→μ^+μ^-)=(3.0_(-0.9)^(+1.0))×10^(-9), where the uncertainty includes both statistical and systematic contributions. An excess of B_s^0→μ^+μ^- events with respect to background is observed with a significance of 4.3 standard deviations. For the decay B^0→μ^+μ^- an upper limit of B(B^0→μ^+μ^-)<1.1×10^(-9) at the 95% confidence level is determined. Both results are in agreement with the expectations from the standard model.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevLett.111.101804DOIArticle
http://prl.aps.org/abstract/PRL/v111/i10/e101804PublisherArticle
http://link.aps.org/doi/10.1103/PhysRevLett.111.101804PublisherArticle
http://arxiv.org/abs/1307.5025arXivDiscussion Paper
Additional Information:© 2013 CERN, for the CMS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Received 18 July 2013; published 5 September 2013. We congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centers and personnel of the Worldwide LHC Computing Grid for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: BMWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus); MoER, SF0690030s09 and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NKTH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF and WCU (Republic of Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS and RFBR (Russia); MESTD (Serbia); SEIDI and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); ThEPCenter, IPST, STAR and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU (Ukraine); STFC (United Kingdom); DOE and NSF (U.S.).
Group:CMS@Caltech
Funders:
Funding AgencyGrant Number
BMWF and FWF (Austria)UNSPECIFIED
FNRS and FWO (Belgium) UNSPECIFIED
CNPq (Brazil)UNSPECIFIED
CAPES (Brazil)UNSPECIFIED
FAPERJ (Brazil)UNSPECIFIED
FAPESP (Brazil)UNSPECIFIED
MES (Bulgaria)UNSPECIFIED
CERNUNSPECIFIED
CASUNSPECIFIED
MoST (China)UNSPECIFIED
NSFC (China)UNSPECIFIED
COLCIENCIAS (Colombia)UNSPECIFIED
MSES (Croatia)UNSPECIFIED
RPF (Cyprus) UNSPECIFIED
MoERSF0690030s09
ERDF (Estonia)UNSPECIFIED
Academy of FinlandUNSPECIFIED
MEC (Finland)UNSPECIFIED
HIP (Finland)UNSPECIFIED
CEA and CNRS/IN2P3 (France)UNSPECIFIED
BMBF (Germany)UNSPECIFIED
DFG (Germany)UNSPECIFIED
HGF (Germany)UNSPECIFIED
GSRT (Greece)UNSPECIFIED
OTKA and NKTH (Hungary) UNSPECIFIED
DAE and DST (India) UNSPECIFIED
IPM (Iran)UNSPECIFIED
SFI (Ireland)UNSPECIFIED
INFN (Italy)UNSPECIFIED
NRF and WCU (Korea)UNSPECIFIED
LAS (Lithuania)UNSPECIFIED
CINVESTAV (Mexico)UNSPECIFIED
CONACyT (Mexico)UNSPECIFIED
SEP (Mexico)UNSPECIFIED
UASLP-FAI (Mexico)UNSPECIFIED
MBIE (New Zealand)UNSPECIFIED
PAEC (Pakistan)UNSPECIFIED
MSHE and NSC (Poland)UNSPECIFIED
FCT (Portugal)UNSPECIFIED
JINR (Dubna)UNSPECIFIED
MONUNSPECIFIED
RosAtom UNSPECIFIED
RAS and RFBR (Russia)UNSPECIFIED
MESTD (Serbia)UNSPECIFIED
SEIDI and CPAN (Spain)UNSPECIFIED
Swiss Funding Agencies (Switzerland)UNSPECIFIED
NSC (Taipei)UNSPECIFIED
ThEPCenterUNSPECIFIED
IPST (Thailand)UNSPECIFIED
STAR and NSTDA (Thailand)UNSPECIFIED
TUBITAK and TAEK (Turkey) UNSPECIFIED
NASU (Ukraine)UNSPECIFIED
STFC (United Kingdom)UNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
NSFUNSPECIFIED
Classification Code:PACS: 13.20.He, 12.15.Mm
Record Number:CaltechAUTHORS:20131021-150338537
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20131021-150338537
Official Citation:Measurement of the Bs0→μ+μ- Branching Fraction and Search for B0→μ+μ- with the CMS Experiment S. Chatrchyan et al. (CMS Collaboration) Published 5 September 2013 (17 pages) 101804
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:41997
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:22 Oct 2013 15:05
Last Modified:22 Oct 2013 15:05

Repository Staff Only: item control page