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Observation of B(s)(0) → J/ψ f1(1285) decays and measurement of the f1(1285) mixing angle.
Aaij, R; Adeva, B; Adinolfi, M; Adrover, C; Affolder, A; Ajaltouni, Z; Albrecht, J; Alessio, F; Alexander, M; Ali, S; Alkhazov, G; Alvarez Cartelle, P; Alves, A A; Amato, S; Amerio, S; Amhis, Y; Anderlini, L; Anderson, J; Andreassen, R; Andreotti, M; Andrews, J E; Appleby, R B; Aquines Gutierrez, O; Archilli, F; Artamonov, A; Artuso, M; Aslanides, E; Auriemma, G; Baalouch, M; Bachmann, S; Back, J J; Badalov, A; Baesso, C; Balagura, V; Baldini, W; Barlow, R J; Barschel, C; Barsuk, S; Barter, W; Batozskaya, V; Bauer, Th; Bay, A; Beddow, J; Bedeschi, F; Bediaga, I; Belogurov, S; Belous, K; Belyaev, I; Ben-Haim, E; Bencivenni, G.
Afiliação
  • Aaij R; Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands.
  • Adeva B; Universidad de Santiago de Compostela, Santiago de Compostela, Spain.
  • Adinolfi M; H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom.
  • Adrover C; CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France.
  • Affolder A; Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom.
  • Ajaltouni Z; Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France.
  • Albrecht J; Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany.
  • Alessio F; European Organization for Nuclear Research (CERN), Geneva, Switzerland.
  • Alexander M; School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom.
  • Ali S; Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands.
  • Alkhazov G; Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia.
  • Alvarez Cartelle P; Universidad de Santiago de Compostela, Santiago de Compostela, Spain.
  • Alves AA; Sezione INFN di Roma La Sapienza, Roma, Italy.
  • Amato S; Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
  • Amerio S; Sezione INFN di Padova, Padova, Italy.
  • Amhis Y; LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France.
  • Anderlini L; Sezione INFN di Firenze, Firenze, Italy.
  • Anderson J; Physik-Institut, Universität Zürich, Zürich, Switzerland.
  • Andreassen R; University of Cincinnati, Cincinnati, Ohio, USA.
  • Andreotti M; Sezione INFN di Ferrara, Ferrara, Italy.
  • Andrews JE; University of Maryland, College Park, Maryland, USA.
  • Appleby RB; School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom.
  • Aquines Gutierrez O; Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany.
  • Archilli F; Laboratori Nazionali dell'INFN di Frascati, Frascati, Italy.
  • Artamonov A; Institute for High Energy Physics (IHEP), Protvino, Russia.
  • Artuso M; Syracuse University, Syracuse, New York, USA.
  • Aslanides E; CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France.
  • Auriemma G; Sezione INFN di Roma La Sapienza, Roma, Italy.
  • Baalouch M; Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France.
  • Bachmann S; Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
  • Back JJ; Department of Physics, University of Warwick, Coventry, United Kingdom.
  • Badalov A; Universitat de Barcelona, Barcelona, Spain.
  • Baesso C; Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil, associated with Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
  • Balagura V; Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia.
  • Baldini W; Sezione INFN di Ferrara, Ferrara, Italy.
  • Barlow RJ; School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom.
  • Barschel C; European Organization for Nuclear Research (CERN), Geneva, Switzerland.
  • Barsuk S; LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France.
  • Barter W; Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom.
  • Batozskaya V; National Center for Nuclear Research (NCBJ), Warsaw, Poland.
  • Bauer T; Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands.
  • Bay A; Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
  • Beddow J; School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom.
  • Bedeschi F; Sezione INFN di Pisa, Pisa, Italy.
  • Bediaga I; Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil.
  • Belogurov S; Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia.
  • Belous K; Institute for High Energy Physics (IHEP), Protvino, Russia.
  • Belyaev I; Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia.
  • Ben-Haim E; LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France.
  • Bencivenni G; Laboratori Nazionali dell'INFN di Frascati, Frascati, Italy.
Phys Rev Lett ; 112(9): 091802, 2014 Mar 07.
Article em En | MEDLINE | ID: mdl-24655242
ABSTRACT
Decays of B(s)(0) and B(0) mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the LHC, are investigated using data corresponding to an integrated luminosity of 3 fb-1 collected with the LHCb detector. B(s)(0) → J/ψ f1(1285) decays are seen for the first time, and the branching fractions are measured. Using these rates, the f1(1285) mixing angle between strange and nonstrange components of its wave function in the qq structure model is determined to be ±(24.0-2.6-0.8+3.1+0.6)°. Implications on the possible tetraquark nature of the f1(1285) are discussed.
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Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Rev Lett Ano de publicação: 2014 Tipo de documento: Article País de afiliação: Holanda
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Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Rev Lett Ano de publicação: 2014 Tipo de documento: Article País de afiliação: Holanda