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Search for a dark photon in e(+)e(-) collisions at BABAR.
Lees, J P; Poireau, V; Tisserand, V; Grauges, E; Palano, A; Eigen, G; Stugu, B; Brown, D N; Feng, M; Kerth, L T; Kolomensky, Yu G; Lee, M J; Lynch, G; Koch, H; Schroeder, T; Hearty, C; Mattison, T S; McKenna, J A; So, R Y; Khan, A; Blinov, V E; Buzykaev, A R; Druzhinin, V P; Golubev, V B; Kravchenko, E A; Onuchin, A P; Serednyakov, S I; Skovpen, Yu I; Solodov, E P; Todyshev, K Yu; Lankford, A J; Mandelkern, M; Dey, B; Gary, J W; Long, O; Campagnari, C; Franco Sevilla, M; Hong, T M; Kovalskyi, D; Richman, J D; West, C A; Eisner, A M; Lockman, W S; Panduro Vazquez, W; Schumm, B A; Seiden, A; Chao, D S; Cheng, C H; Echenard, B; Flood, K T.
Afiliação
  • Lees JP; Laboratoire d'Annecy-le-Vieux de Physique des Particules (LAPP), Université de Savoie, CNRS/IN2P3, F-74941 Annecy-Le-Vieux, France.
  • Poireau V; Laboratoire d'Annecy-le-Vieux de Physique des Particules (LAPP), Université de Savoie, CNRS/IN2P3, F-74941 Annecy-Le-Vieux, France.
  • Tisserand V; Laboratoire d'Annecy-le-Vieux de Physique des Particules (LAPP), Université de Savoie, CNRS/IN2P3, F-74941 Annecy-Le-Vieux, France.
  • Grauges E; Universitat de Barcelona, Facultat de Fisica, Departament ECM, E-08028 Barcelona, Spain.
  • Palano A; INFN Sezione di Bari, I-70126 Bari, Italy and Dipartimento di Fisica, Università di Bari, I-70126 Bari, Italy.
  • Eigen G; University of Bergen, Institute of Physics, N-5007 Bergen, Norway.
  • Stugu B; University of Bergen, Institute of Physics, N-5007 Bergen, Norway.
  • Brown DN; Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720, USA.
  • Feng M; Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720, USA.
  • Kerth LT; Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720, USA.
  • Kolomensky YG; Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720, USA.
  • Lee MJ; Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720, USA.
  • Lynch G; Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720, USA.
  • Koch H; Ruhr Universität Bochum, Institut für Experimentalphysik 1, D-44780 Bochum, Germany.
  • Schroeder T; Ruhr Universität Bochum, Institut für Experimentalphysik 1, D-44780 Bochum, Germany.
  • Hearty C; University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1.
  • Mattison TS; University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1.
  • McKenna JA; University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1.
  • So RY; University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1.
  • Khan A; Brunel University, Uxbridge, Middlesex UB8 3PH, United Kingdom.
  • Blinov VE; Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia and Novosibirsk State University, Novosibirsk 630090, Russia and Novosibirsk State Technical University, Novosibirsk 630092, Russia.
  • Buzykaev AR; Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia.
  • Druzhinin VP; Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia and Novosibirsk State University, Novosibirsk 630090, Russia.
  • Golubev VB; Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia and Novosibirsk State University, Novosibirsk 630090, Russia.
  • Kravchenko EA; Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia and Novosibirsk State University, Novosibirsk 630090, Russia.
  • Onuchin AP; Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia and Novosibirsk State University, Novosibirsk 630090, Russia and Novosibirsk State Technical University, Novosibirsk 630092, Russia.
  • Serednyakov SI; Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia and Novosibirsk State University, Novosibirsk 630090, Russia.
  • Skovpen YI; Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia and Novosibirsk State University, Novosibirsk 630090, Russia.
  • Solodov EP; Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia and Novosibirsk State University, Novosibirsk 630090, Russia.
  • Todyshev KY; Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia and Novosibirsk State University, Novosibirsk 630090, Russia.
  • Lankford AJ; University of California at Irvine, Irvine, California 92697, USA.
  • Mandelkern M; University of California at Irvine, Irvine, California 92697, USA.
  • Dey B; University of California at Riverside, Riverside, California 92521, USA.
  • Gary JW; University of California at Riverside, Riverside, California 92521, USA.
  • Long O; University of California at Riverside, Riverside, California 92521, USA.
  • Campagnari C; University of California at Santa Barbara, Santa Barbara, California 93106, USA.
  • Franco Sevilla M; University of California at Santa Barbara, Santa Barbara, California 93106, USA.
  • Hong TM; University of California at Santa Barbara, Santa Barbara, California 93106, USA.
  • Kovalskyi D; University of California at Santa Barbara, Santa Barbara, California 93106, USA.
  • Richman JD; University of California at Santa Barbara, Santa Barbara, California 93106, USA.
  • West CA; University of California at Santa Barbara, Santa Barbara, California 93106, USA.
  • Eisner AM; University of California at Santa Cruz, Institute for Particle Physics, Santa Cruz, California 95064, USA.
  • Lockman WS; University of California at Santa Cruz, Institute for Particle Physics, Santa Cruz, California 95064, USA.
  • Panduro Vazquez W; University of California at Santa Cruz, Institute for Particle Physics, Santa Cruz, California 95064, USA.
  • Schumm BA; University of California at Santa Cruz, Institute for Particle Physics, Santa Cruz, California 95064, USA.
  • Seiden A; University of California at Santa Cruz, Institute for Particle Physics, Santa Cruz, California 95064, USA.
  • Chao DS; California Institute of Technology, Pasadena, California 91125, USA.
  • Cheng CH; California Institute of Technology, Pasadena, California 91125, USA.
  • Echenard B; California Institute of Technology, Pasadena, California 91125, USA.
  • Flood KT; California Institute of Technology, Pasadena, California 91125, USA.
Phys Rev Lett ; 113(20): 201801, 2014 Nov 14.
Article em En | MEDLINE | ID: mdl-25432035
ABSTRACT
Dark sectors charged under a new Abelian interaction have recently received much attention in the context of dark matter models. These models introduce a light new mediator, the so-called dark photon (A^{'}), connecting the dark sector to the standard model. We present a search for a dark photon in the reaction e^{+}e^{-}→γA^{'}, A^{'}→e^{+}e^{-}, µ^{+}µ^{-} using 514 fb^{-1} of data collected with the BABAR detector. We observe no statistically significant deviations from the standard model predictions, and we set 90% confidence level upper limits on the mixing strength between the photon and dark photon at the level of 10^{-4}-10^{-3} for dark photon masses in the range 0.02-10.2 GeV. We further constrain the range of the parameter space favored by interpretations of the discrepancy between the calculated and measured anomalous magnetic moment of the muon.
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Base de dados: MEDLINE Idioma: En Ano de publicação: 2014 Tipo de documento: Article
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Base de dados: MEDLINE Idioma: En Ano de publicação: 2014 Tipo de documento: Article