LHCb Collaboration (Including: Back, J. J., Dossett, D., Gershon, T. J., Harrison, P. F., Latham, Thomas, Pilar, T., Poluektov, Anton, Reid, Matthew M., Whitehead, M. (Mark) and Williams, M. P.). (2011) Determination of fs/fd for 7 TeV pp collisions and measurement of the B0->D-K+ branching fraction. Physical Review Letters, Vol.107 (No.21). p. 211801. ISSN 0031-9007

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Abstract

The relative abundance of the three decay modes B0→D-K+, B0→D-π+, and Bs0→Ds-π+ produced in 7 TeV pp collisions at the LHC is determined from data corresponding to an integrated luminosity of 35  pb-1. The branching fraction of B0→D-K+ is found to be B(B0→D-K+)=(2.01±0.18stat±0.14syst)×10-4. The ratio of fragmentation fractions fs/fd is determined through the relative abundance of Bs0→Ds-π+ to B0→D-K+ and B0→D-π+, leading to fs/fd=0.253±0.017±0.017±0.020, where the uncertainties are statistical, systematic, and theoretical, respectively.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	B mesons -- Decay, Hadron interactions, Large Hadron Collider (France and Switzerland)
Journal or Publication Title:	Physical Review Letters
Publisher:	American Physical Society
ISSN:	0031-9007
Official Date:	18 November 2011
Dates:	Date Event 18 November 2011 Published
Volume:	Vol.107
Number:	No.21
Number of Pages:	8
Page Range:	p. 211801
Identification Number:	10.1103/PhysRevLett.107.211801
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription 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)
References:	[1] R. Aaij et al. (LHCb Collaboration), Phys. Lett. B 699, 330 (2011). [2] R. Fleischer, N. Serra, and N. Tuning, Phys. Rev. D 83, 014017 (2011). [3] R. Fleischer, N. Serra, and N. Tuning, Phys. Rev. D 82, 034038 (2010). [4] D. Asner et al., arXiv:1010.1589. [5] K. Nakamura et al., J. Phys. G 37, 075021 (2010). [6] K. Abe et al. (BELLE Collaboration), Phys. Rev. Lett. 87, 111801 (2001). [7] A. A. Alves, Jr. et al. (LHCb Collaboration), JINST 3, S08005 (2008). [8] A. A. Alves, Jr. et al. (LHCb Detector at the LHC), JINST 3, S08005 (2008). [9] V.V. Gligorov, Report No. LHCb-PUB-2011-003. [10] M. Williams et al., Report No. LHCb-PUB-2011-002. [11] A. Hoecker et al., Proc. Sci., ACAT (2007) 040. [12] T. Skwarnicki, DESY Report No. F31-86-02, 1986. [13] S. Dobbs et al. (CLEO Collaboration), Phys. Rev. D 76, 112001 (2007). [14] J. P. Alexander et al. (CLEO Collaboration), Phys. Rev. Lett. 100, 161804 (2008).
URI:	http://wrap.warwick.ac.uk/id/eprint/44474

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