Journal article
Measurements of the branching fractions of B → pp K decays
R Aaij, CA Beteta, A Adametz, B Adeva, M Adinolfi, C Adrover, A Affolder, Z Ajaltouni, J Albrecht, F Alessio, M Alexander, S Ali, G Alkhazov, PA Cartelle, AA Alves, S Amato, Y Amhis, L Anderlini, J Anderson, R Andreassen Show all
European Physical Journal C | SPRINGER | Published : 2013
Abstract
The branching fractions of the decay B+ → pp K+ for different intermediate states are measured using data, corresponding to an integrated luminosity of 1.0 fb−1, collected by the LHCb experiment. The total branching fraction, its charmless component (Mpp < 2.85 GeV/c2) and the branching fractions via the resonant cc states ηc(1S) and ψ(2S) relative to the decay via a J/ψ intermediate state are B(B+ → pp K+) total/B(B+ → J/ψK+ →pp K+) = 4.91 ± 0.19 (stat) ± 0.14 (syst), B(B+ → pp K+)Mpp < 2.85 GeV/c2/B(B+ → J/ψK+ → pp K+) = 2.02 ± 0.10 (stat) ± 0.08 (syst), B(B+ → ηc(1S)K+ → pp K+)/B(B+ → J/ψK+ → pp K+) = 0.578 ± 0.035 (stat) ± 0.027 (syst), B(B+ → ψ(2S)K+ → pp K+)/B(B+ → J/ψK+ → pp K+) = 0.0..
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Awarded by National Science Foundation
Funding Acknowledgements
We express our gratitude to our colleagues in the CERN accelerator departments for the excellent performance of the LHC. We thank the technical and administrative staff at the LHCb institutes. We acknowledge support from CERN and from the national agencies: CAPES, CNPq, FAPERJ and FINEP (Brazil); NSFC (China); CNRS/IN2P3 and Region Auvergne (France); BMBF, DFG, HGF and MPG (Germany); SFI (Ireland); INFN (Italy); FOM and NWO (The Netherlands); SCSR (Poland); ANCS/IFA (Romania); MinES, Rosatom, RFBR and NRC "Kurchatov Institute" (Russia); MinECo, XuntaGal and GENCAT (Spain); SNSF and SER (Switzerland); NAS Ukraine (Ukraine); STFC (United Kingdom); NSF (USA). We also acknowledge the support received from the ERC under FP7. The Tier1 computing centres are supported by IN2P3 (France), KIT and BMBF (Germany), INFN (Italy), NWO and SURF (The Netherlands), PIC (Spain), GridPP (United Kingdom). We are thankful for the computing resources put at our disposal by Yandex LLC (Russia), as well as to the communities behind the multiple open source software packages that we depend on.