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Measurement of the B-s(0) ->mu(+)mu(-) Branching Fraction and Search for B-0 -> mu(+)mu(-) with the CMS Experiment

Title:	Measurement of the B-s(0) ->mu(+)mu(-) Branching Fraction and Search for B-0 -> mu(+)mu(-) with the CMS Experiment
Authors:	Chatrchyan, S.; Collaboration, C. M. S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Eroe, J.; Fabjan, C.; Friedl, M.; Fruehwirth, R.; Ghete, V. M.; Hoermann, N.; Hrubec, J.; Jeitler, M.; Kiesenhofer, W.; Knuenz, V.; Krammer, M.; Kraetschmer, I.; Liko, D.; Mikulec, I.; Rabady, D.; Rahbaran, B.; Rohringer, C.; Rohringer, H.; Schoefbeck, R.; Strauss, J.; Taurok, A.; Treberer-Treberspurg, W.; Waltenberger, W.; Wulz, C.E.; Mossolov, V.; Shumeiko, N.; Gonzalez, J. Suarez; Alderweireldt, S.; Bansal, M.; Ba
Contributors:	Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.; Yerevan Phys Inst, Yerevan 375036, Armenia.; Inst Hochenergiephys OeAW, Vienna, Austria.; Natl Ctr Particle & High Energy Phys, Minsk, Byelarus.; Univ Antwerp, Antwerp, Belgium.; Vrije Univ Brussel, Brussels, Belgium.; Univ Libre Bruxelles, Brussels, Belgium.; Univ Ghent, B-9000 Ghent, Belgium.; Catholic Univ Louvain, B-1348 Louvain, Belgium.; Univ Mons, B-7000 Mons, Belgium.; Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil.; Univ Estado Rio de Janeiro, BR-20550011 Rio De Janeiro, Brazil.; Univ Estadual Paulista, Sao Paulo, Brazil.; Univ Fed ABC, Sao Paulo, Brazil.; Inst Nucl Energy Res, Sofia, Bulgaria.; Univ Sofia, BU-1126 Sofia, Bulgaria.; Inst High Energy Phys, Beijing 100039, Peoples R China.; Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China.; Univ Los Andes, Bogota, Colombia.; Tech Univ Split, Split, Croatia.; Univ Split, Split, Croatia.; Rudjer Boskovic Inst, Zagreb, Croatia.; Univ Cyprus, Nicosia, Cyprus.; Charles Univ Prague, Prague, Czech Republic.; Acad Sci Res & Technol Arab Republ Egypt, Egyptian Network High Energy Phys, Cairo, Egypt.; NICPB, Tallinn, Estonia.; Univ Helsinki, Dept Phys, Helsinki, Finland.; Helsinki Inst Phys, Helsinki, Finland.; Lappeenranta Univ Technol, Lappeenranta, Finland.; CEA Saclay, DSM IRFU, F-91191 Gif Sur Yvette, France.; Ecole Polytech, CNRS IN2P3, Lab Leprince Ringuet, Palaiseau, France.; Univ Strasbourg, Univ Haute Alsace Mulhouse, Inst Pluridisciplinaire Hubert Curien, CNRS IN2P3, Strasbourg, France.; Instt Natl Phys Nucl & Phys Particules, Ctr Calcul, CNRS IN2P3, Villeurbanne, France.; Univ Lyon 1, CNRS IN2P3, Inst Phys Nucl Lyon, Villeurbanne, France.; Tbilisi State Univ, Inst High Energy Phys & Informatizat, GE-380086 Tbilisi, Rep of Georgia.; Rhein Westfal TH Aachen, Inst Phys 1, Aachen, Germany.; Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany.; Rhein Westfal TH Aachen, Phys Inst B 3, Aachen, Germany.; DESY, Hamburg, Germany.; Univ Hamburg, Hamburg, Germany.; Univ Karlsruhe, Inst Expt Kernphys, Karlsruhe, Germany.; NCSR Demokritos, INPP, Aghia Paraskevi, Greece.; Univ Athens, Athens, Greece.; Univ Ioannina, GR-45110 Ioannina, Greece.; KFKI Res Inst Particle & Nucl Phys, Budapest, Hungary.; Inst Nucl Res ATOMKI, Debrecen, Hungary.; Debrecen Univ Med, H-4012 Debrecen, Hungary.; Natl Inst Sci Educ & Res, Bhubaneswar, Orissa, India.; Panjab Univ, Chandigarh 160014, India.; Univ Delhi, Delhi 110007, India.; Saha Inst Nucl Phys, Kolkata, India.; Bhabha Atom Res Ctr, Mumbai 400085, Maharashtra, India.; Tata Inst Fundamental Research EHEP, Mumbai, Maharashtra, India.; Tata Inst Fundamental Res HECR, Mumbai, Maharashtra, India.; Inst Res Fundamental Sci IPM, Tehran, Iran.; Univ Coll Dublin, Dublin 2, Ireland.; Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.; Univ Bari, Bari, Italy.; Politecn Bari, Bari, Italy.; Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy.; Univ Bologna, Bologna, Italy.; Ist Nazl Fis Nucl, Sez Catania, I-95129 Catania, Italy.; Univ Catania, Catania, Italy.; Ist Nazl Fis Nucl, Sez Firenze, I-50125 Florence, Italy.; Univ Florence, Florence, Italy.; Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.; Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy.; Univ Genoa, Genoa, Italy.; Ist Nazl Fis Nucl, Sez Milano Bicocca, I-20133 Milan, Italy.; Univ Milano Bicocca, Milan, Italy.; Ist Nazl Fis Nucl, Sez Napoli, I-80125 Naples, Italy.; Univ Naples Federico II, Naples, Italy.; Univ Basilicata Potenza, Naples, Italy.; Univ G Marconi Roma, Naples, Italy.; Ist Nazl Fis Nucl, Sez Padova, Padua, Italy.; Univ Padua, Padua, Italy.; Univ Trent, Padua, Italy.; Ist Nazl Fis Nucl, Sez Pavia, I-27100 Pavia, Italy.; Univ Pavia, I-27100 Pavia, Italy.; Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy.; Univ Perugia, I-06100 Perugia, Italy.; Ist Nazl Fis Nucl, Sez Pisa, Pisa, Italy.; Univ Pisa, Pisa, Italy.; Scuola Normale Super Pisa, Pisa, Italy.; Ist Nazl Fis Nucl, Sez Roma, Rome, Italy.; Univ Rome, Rome, Italy.; Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy.; Univ Turin, Turin, Italy.; Univ Piemonte Orientale Novara, Turin, Italy.; Ist Nazl Fis Nucl, Sez Trieste, Trieste, Italy.; Univ Trieste, Trieste, Italy.; Kangwon Natl Univ, Chunchon, South Korea.; Kyungpook Natl Univ, Taegu 702701, South Korea.; Chonnam Natl Univ, Inst Universe & Elementary Particles, Kwangju, South Korea.; Korea Univ, Seoul, South Korea.; Univ Seoul, Seoul, South Korea.; Sungkyunkwan Univ, Suwon, South Korea.; Vilnius Univ, Vilnius, Lithuania.; Ctr Invest & Estudios Avanzados IPN, Mexico City, DF, Mexico.; Univ Iberoamer, Mexico City, DF, Mexico.
Source:	SCI ; EI
Publisher Information:	物理评论快报
Publication Year:	2013
Collection:	Peking University Institutional Repository (PKU IR) / 北京大学机构知识库
Subject Terms:	B-MESON DECAYS; DENSITY-FUNCTION; SIMULATION
Description:	Results are presented from a search for the rare decays B-s(0) -> mu(+) mu(-) and B-0 -> mu(+) mu(-) in pp collisions at root 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) -> mu(+)mu(-)) = (3.0(-0.9)(+1.0)) x 10(-9), where the uncertainty includes both statistical and systematic contributions. An excess of B-s(0) -> mu(+)mu(-) events with respect to background is observed with a significance of 4.3 standard deviations. For the decay B-0 -> mu(+)mu(-) an upper limit of 'B(B-0 -> mu(+) mu(-)) < 1.1 x 10(-9) at the 95% confidence level is determined. Both results are in agreement with the expectations from the standard model. ; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000324232600007&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Physics, Multidisciplinary ; SCI(E) ; EI ; 186 ; ARTICLE ; 10 ; null ; 111
Document Type:	journal/newspaper
Language:	English
Relation:	PHYSICAL REVIEW LETTERS.2013,111,(10).; 813203; http://hdl.handle.net/20.500.11897/391118; WOS:000324232600007
DOI:	10.1103/PhysRevLett.111.101804
Availability:	https://hdl.handle.net/20.500.11897/391118; https://doi.org/10.1103/PhysRevLett.111.101804
Accession Number:	edsbas.52DAA603
Database:	BASE