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Determination of the Ratio of b-Quark Fragmentation Fractions f(s)/f(d) in pp Collisions at √s=7 TeV with the ATLAS Detector.
Aad, G; Abbott, B; Abdallah, J; Abdinov, O; Aben, R; Abolins, M; AbouZeid, O S; Abramowicz, H; Abreu, H; Abreu, R; Abulaiti, Y; Acharya, B S; Adamczyk, L; Adams, D L; Adelman, J; Adomeit, S; Adye, T; Affolder, A A; Agatonovic-Jovin, T; Agricola, J; Aguilar-Saavedra, J A; Ahlen, S P; Ahmadov, F; Aielli, G; Akerstedt, H; Åkesson, T P A; Akimov, A V; Alberghi, G L; Albert, J; Albrand, S; Alconada Verzini, M J; Aleksa, M; Aleksandrov, I N; Alexa, C; Alexander, G; Alexopoulos, T; Alhroob, M; Alimonti, G; Alio, L; Alison, J; Alkire, S P; Allbrooke, B M M; Allport, P P; Aloisio, A; Alonso, A; Alonso, F; Alpigiani, C; Altheimer, A; Alvarez Gonzalez, B; Álvarez Piqueras, D.
Afiliación
  • Aad G; CPPM, Aix-Marseille Université and CNRS/IN2P3, Marseille, France.
  • Abbott B; Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma, USA.
  • Abdallah J; Institute of Physics, Academia Sinica, Taipei, Taiwan.
  • Abdinov O; Institute of Physics, Azerbaijan Academy of Sciences, Baku, Azerbaijan.
  • Aben R; Nikhef National Institute for Subatomic Physics and University of Amsterdam, Amsterdam, Netherlands.
  • Abolins M; Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan, USA.
  • AbouZeid OS; Department of Physics, University of Toronto, Toronto ON, Canada.
  • Abramowicz H; Raymond and Beverly Sackler School of Physics and Astronomy, Tel Aviv University, Tel Aviv, Israel.
  • Abreu H; Department of Physics, Technion: Israel Institute of Technology, Haifa, Israel.
  • Abreu R; Center for High Energy Physics, University of Oregon, Eugene, Oregon, USA.
  • Abulaiti Y; Department of Physics, Stockholm University, Stockholm, Sweden.
  • Acharya BS; The Oskar Klein Centre, Stockholm, Sweden.
  • Adamczyk L; INFN Gruppo Collegato di Udine, Sezione di Trieste, Udine, Italy.
  • Adams DL; ICTP, Trieste, Italy.
  • Adelman J; AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Krakow, Poland.
  • Adomeit S; Physics Department, Brookhaven National Laboratory, Upton, New York, USA.
  • Adye T; Department of Physics, Northern Illinois University, DeKalb, Illionois, USA.
  • Affolder AA; Fakultät für Physik, Ludwig-Maximilians-Universität München, München, Germany.
  • Agatonovic-Jovin T; Particle Physics Department, Rutherford Appleton Laboratory, Didcot, United Kingdom.
  • Agricola J; Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom.
  • Aguilar-Saavedra JA; Institute of Physics, University of Belgrade, Belgrade, Serbia.
  • Ahlen SP; II Physikalisches Institut, Georg-August-Universität, Göttingen, Germany.
  • Ahmadov F; Laboratório de Instrumentação e Física Experimental de Partículas - LIP, Lisboa, Portugal.
  • Aielli G; Departamento de Fisica Teorica y del Cosmos and CAFPE, Universidad de Granada, Granada (Spain), Portugal.
  • Akerstedt H; Department of Physics, Boston University, Boston, Massachusetts, USA.
  • Åkesson TP; Joint Institute for Nuclear Research, JINR Dubna, Dubna, Russia.
  • Akimov AV; INFN Sezione di Roma Tor Vergata, Roma, Italy.
  • Alberghi GL; Dipartimento di Fisica, Università di Roma Tor Vergata, Roma, Italy.
  • Albert J; Department of Physics, Stockholm University, Stockholm, Sweden.
  • Albrand S; The Oskar Klein Centre, Stockholm, Sweden.
  • Alconada Verzini MJ; Fysiska institutionen, Lunds universitet, Lund, Sweden.
  • Aleksa M; P.N. Lebedev Institute of Physics, Academy of Sciences, Moscow, Russia.
  • Aleksandrov IN; INFN Sezione di Bologna, Bologna, Italy.
  • Alexa C; Dipartimento di Fisica e Astronomia, Università di Bologna, Bologna, Italy.
  • Alexander G; Department of Physics and Astronomy, University of Victoria, Victoria, British Columbia, Canada.
  • Alexopoulos T; Laboratoire de Physique Subatomique et de Cosmologie, Université Grenoble-Alpes, CNRS/IN2P3, Grenoble, France.
  • Alhroob M; Instituto de Física La Plata, Universidad Nacional de La Plata and CONICET, La Plata, Argentina.
  • Alimonti G; CERN, Geneva, Switzerland.
  • Alio L; Joint Institute for Nuclear Research, JINR Dubna, Dubna, Russia.
  • Alison J; National Institute of Physics and Nuclear Engineering, Bucharest, Romania.
  • Alkire SP; Raymond and Beverly Sackler School of Physics and Astronomy, Tel Aviv University, Tel Aviv, Israel.
  • Allbrooke BM; Physics Department, National Technical University of Athens, Zografou, Greece.
  • Allport PP; Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma, USA.
  • Aloisio A; INFN Sezione di Milano, Milano, Italy.
  • Alonso A; CPPM, Aix-Marseille Université and CNRS/IN2P3, Marseille, France.
  • Alonso F; Enrico Fermi Institute, University of Chicago, Chicago, Illionois, USA.
  • Alpigiani C; Nevis Laboratory, Columbia University, Irvington, New York, USA.
  • Altheimer A; Department of Physics and Astronomy, University of Sussex, Brighton, United Kingdom.
  • Alvarez Gonzalez B; Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom.
  • Álvarez Piqueras D; INFN Sezione di Napoli, Napoli, Italy.
Phys Rev Lett ; 115(26): 262001, 2015 Dec 31.
Article en En | MEDLINE | ID: mdl-26764987
ABSTRACT
With an integrated luminosity of 2.47 fb(-1) recorded by the ATLAS experiment at the LHC, the exclusive decays B(s)(0)→J/ψϕ and B(d)(0)→J/ψK(*0) of B mesons produced in pp collisions at √s=7 TeV are used to determine the ratio of fragmentation fractions f(s)/f(d). From the observed B(s)(0)→J/ψϕ and B(d)(0)→J/ψK(*0) yields, the quantity (f(s)/f(d))[B(B(s)(0)→J/ψϕ)/B(B(d)(0)→J/ψK(*0))] is measured to be 0.199±0.004(stat)±0.008(syst). Using a recent theory prediction for [B(B(s)(0)→J/ψϕ)/B(B(d)(0)→J/ψK(*0))] yields (f(s)/f(d))=0.240±0.004(stat)±0.010(syst)±0.017(th). This result is based on a new approach that provides a significant improvement of the world average.
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2015 Tipo del documento: Article
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2015 Tipo del documento: Article