Journal article
Measurement of b-hadron branching fractions for two-body decays into charmless charged hadrons
R Aaij, CA Beteta, 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, J Anderson, RB Appleby, OA Gutierrez, F Archilli Show all
Journal of High Energy Physics | SPRINGER | Published : 2012
Abstract
Based on data corresponding to an integrated luminosity of 0.37 fb -1 collected by the LHCb experiment in 2011, the following ratios of branching fractions are measured: B(B0 → π+π -) / B(B0 → K+π-) = 0.262 ± 0.009 ± 0.017; (fs/fd) B(Bs0 → K +K-) / B(B0 → K+π -) = 0.316 ± 0.009 ± 0.019; (fs/fd) B(B s0 → π+K-) / B(B0 → K+π-) = 0.074 ± 0.006 ± 0.006; (fd/fs) ± B(B0 → K+K-) / B(B s0 → K+K-) = 0.018 -0.007 +-0.007 ± 0.009; (fs/fd) B(Bs0 → π+π-) / B(B0 → π+π-) = 0.050 -0.009 +0.011 ± 0.004; BΛb0 → pπ-) / BΛb0 → pK-) = 0.86 ± 0.08 ± 0.05; where the πrst uncertainties are statistical and the second systematic. Using the current world average of B(B0 → K +π-π and the ratio of the strange to light ne..
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Awarded by Science and Technology Facilities Council
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 CERN and at the LHCb institutes, and acknowledge support from the National Agencies: CAPES, CNPq, FAPERJ and FINEP (Brazil); CERN; NSFC (China); CNRS/IN2P3 (France); BMBF, DFG, HGF and MPG (Germany); SFI (Ireland); INFN (Italy); FOM and NWO (The Netherlands); SCSR (Poland); ANCS (Romania); MinES of Russia and Rosatom (Russia); MICINN, 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 and the Region Auvergne.