Opposite-side flavour tagging of B mesons at the LHCb experiment

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• 作者：The LHCb Collaboration (1) marta.calvi@mib.infn.it
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• 刊名：The European Physical Journal C - Particles and Fields
• 出版年：2012
• 出版时间：June 2012
• 年：2012
• 卷：72
• 期：6
• 页码：DOI: 10.1140/epjc/s1
• 全文大小：1,021.8 KB
• 参考文献：1. R. Aaij et al. (LHCb collaboration), Measurement of the oscillation frequency Δm s in decays. arXiv:1112.4311. Submitted to Phys. Lett. B. doi:10.1016/j.physletb.2012.02.031
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  3. R. Aaij et al. (LHCb collaboration), Measurement of the CP violating phase ? s in the decay . arXiv:1112.3183. Submitted to Phys. Rev. Lett. doi:10.1103/PhysRevLett.108.101803
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• 作者单位：1. CERN, 1211 Geneva 23, Switzerland2. Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil3. Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil4. Center for High Energy Physics, Tsinghua University, Beijing, China5. LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France6. Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France7. CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France8. LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France9. LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France10. Fakult?t Physik, Technische Universit?t Dortmund, Dortmund, Germany11. Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany12. Physikalisches Institut, Ruprecht-Karls-Universit?t Heidelberg, Heidelberg, Germany13. School of Physics, University College Dublin, Dublin, Ireland14. Sezione INFN di Bari, Bari, Italy15. Sezione INFN di Bologna, Bologna, Italy16. Sezione INFN di Cagliari, Cagliari, Italy17. Sezione INFN di Ferrara, Ferrara, Italy18. Sezione INFN di Firenze, Firenze, Italy19. Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy20. Sezione INFN di Genova, Genova, Italy21. Sezione INFN di Milano Bicocca, Milano, Italy22. Sezione INFN di Roma Tor Vergata, Roma, Italy23. Sezione INFN di Roma La Sapienza, Roma, Italy24. Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland25. AGH University of Science and Technology, Kraków, Poland26. Soltan Institute for Nuclear Studies, Warsaw, Poland27. Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania28. Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia29. Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia30. Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia31. Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia32. Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia33. Institute for High Energy Physics (IHEP), Protvino, Russia34. Universitat de Barcelona, Barcelona, Spain35. Universidad de Santiago de Compostela, Santiago de Compostela, Spain36. European Organization for Nuclear Research (CERN), Geneva, Switzerland37. Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland38. Physik-Institut, Universit?t Zürich, Zürich, Switzerland39. Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands40. Nikhef National Institute for Subatomic Physics and Vrije Universiteit, Amsterdam, The Netherlands41. NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine42. Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine43. University of Birmingham, Birmingham, United Kingdom44. H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom45. Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom46. Department of Physics, University of Warwick, Coventry, United Kingdom47. STFC Rutherford Appleton Laboratory, Didcot, United Kingdom48. School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom49. School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom50. Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom51. Imperial College London, London, United Kingdom52. School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom53. Department of Physics, University of Oxford, Oxford, United Kingdom54. Syracuse University, Syracuse, NY, United States55. Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil56. CC-IN2P3, CNRS/IN2P3, Lyon-Villeurbanne, France57. Physikalisches Institut, Universit?t Rostock, Rostock, Germany
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Elementary Particles and Quantum Field Theory
  Nuclear Physics, Heavy Ions and Hadrons
  Physics beyond the Standard Model
  Measurement Science and Instrumentation
  Astronomy, Astrophysics and Cosmology
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1434-6052

文摘

The calibration and performance of the opposite-side flavour tagging algorithms used for the measurements of time-dependent asymmetries at the LHCb experiment are described. The algorithms have been developed using simulated events and optimized and calibrated with B +→J/ψK +, B 0→J/ψK ?0 and B 0→D ?? μ + ν _μ decay modes with 0.37 fb?1 of data collected in pp collisions at ?s = 7 TeV\sqrt{s} = 7\mbox{~TeV} during the 2011 physics run. The opposite-side tagging power is determined in the B +→J/ψK + channel to be (2.10±0.08±0.24) %, where the first uncertainty is statistical and the second is systematic.