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Measurement of the ratio of branching fractions B(B0→K*0γ)/B(Bs0→ϕγ)

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LHCb Collaboration (Including: Back, J. J., Dossett, D., Gershon, T. J., Harrison, P. F., Kreps, Michal, Latham, Thomas, Pilar, T., Poluektov, Anton, Reid, Matthew M., Silva Coutinho, R., Whitehead, M. (Mark) and Williams, M. P.). (2012) Measurement of the ratio of branching fractions B(B0→K*0γ)/B(Bs0→ϕγ). Physical Review D, Vol.85 (No.11). Article Number 112013 . ISSN 1550-7998

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Official URL: http://dx.doi.org/10.1103/PhysRevD.85.112013

Abstract

The ratio of branching fractions of the radiative B decays B0→K*0γ and B0s→ϕγ has been measured using 0.37 fb-1 of pp collisions at a center of mass energy of √s=7 TeV, collected by the LHCb experiment. The value obtained is B(B0→K*0γ)/B(B0s→ϕγ)=1.12±0.08-0.04-0.08+0.06+0.09, where the first uncertainty is statistical, the second systematic, and the third is associated with the ratio of fragmentation fractions fs/fd. Using the world average for B(B0→K*0γ)=(4.33±0.15)×10-5, the branching fraction B(B0s→ϕγ) is measured to be (3.9±0.5)×10-5, which is the most precise measurement to date.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	B mesons -- Decay, Large Hadron Collider (France and Switzerland)
Journal or Publication Title:	Physical Review D
Publisher:	American Physical Society
ISSN:	1550-7998
Volume:	Vol.85
Number:	No.11
Article Number:	Article Number 112013
Identification Number:	10.1103/PhysRevD.85.112013
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Open Access
Funder:	Brazil. Coordenação do Aperfeiçoamento de Pessoal de Nível Superior (CAPES), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ), Financiadora de Estudos e Projetos (Brazil) (FINEP), European Organization for Nuclear Research (CERN), Guo jia zi ran ke xue ji jin wei yuan hui (China) [National Natural Science Foundation of China] (NSFC), Centre national de la recherche scientifique (France) (CNRS), Institut national de physique nucléaire et de physique des particules, Germany. Bundesministerium für Bildung und Forschung (BMBF), Deutsche Forschungsgemeinschaft (DFG), Hermann von Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF), Max-Planck-Gesellschaft zur Förderung der Wissenschaften [Max Planck Society for the Advancement of Science], Science Foundation Ireland (SFI), Istituto nazionale di fisica nucleare (INFN), Stichting voor Fundamenteel Onderzoek der Materie (FOM) [Foundation for Fundamental Research on Matter], Nederlandse Organisatie voor Wetenschappelijk Onderzoek [Netherlands Organisation for Scientific Research] (NWO), SCSR (Poland), Autoritatea Nationala pentru Cercetare Stiintifica (ANCS), Russia (Federation). Ministerstvo obrazovanii︠a︡ i nauki [Ministry of Education and Science], Federalʹnoe agentstvo po atomnoĭ ėnergii (Russia), Spain. Ministerio de Ciencia e Innovación (MICINN), Galicia (Spain : Region). Xunta, Catalonia (Spain), Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung [Swiss National Science Foundation] (SNSF), Switzerland. Staatssekretariat für Ausbildung und Forschung (SER), Nat︠s︡ionalʹna akademii︠a︡ nauk Ukraïny (NAS), Science and Technology Facilities Council (Great Britain) (STFC), National Science Foundation (U.S.) (NSF), Seventh Framework Programme (European Commission) (FP7), Auvergne (France)
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URI:	http://wrap.warwick.ac.uk/id/eprint/48567