Accès ouvert déclaré
2012
article
Measurement of branching fractions and rate asymmetries in the rare decays B→K( *)- +- -
Jp Lees, V Poireau, V Tisserand, J Garra Tico, E Grauges, A Palano, G Eigen, B Stugu, DN Brown, LT Kerth, YG Kolomensky, G Lynch, H Koch, T Schroeder, Dj Asgeirsson, C Hearty, Ts Mattison, JA McKenna, A Khan, VE Blinov, AR Buzykaev, VP Druzhinin, VB Golubev, EA Kravchenko, AP Onuchin, SI Serednyakov, YI Skovpen, Ep Solodov, KY Todyshev, AN Yushkov, M Bondioli, D Kirkby, AJ Lankford, M Mandelkern, H Atmacan, JW Gary, F Liu, O Long, G. Vitug, C Campagnari, TM Hong, D Kovalskyi, JD Richman, CA West, AM Eisner, J Kroseberg, WS Lockman, AJ Martinez, BA Schumm, A Seiden, DS Chao, CH Cheng, B Echenard, KT Flood, DG Hitlin, P Ongmongkolkul, FC Porter, AY Rakitin, R Andreassen, Z Huard, BT Meadows, MD Sokoloff, L Sun, Pc Bloom, WT Ford, A Gaz, U Nauenberg, JG Smith, SR Wagner, R Ayad, WH Toki, B Spaan, KR Schubert, R Schwierz, D Bernard, M Verderi, PJ Clark, S Playfer, D Bettoni, C Bozzi, R Calabrese, G Cibinetto, E Fioravanti, I Garzia, E Luppi, M Munerato, M Negrini, L Piemontese, V Santoro, R Baldini-Ferroli, A Calcaterra, R De Sangro, G Finocchiaro, P Patteri, Im Peruzzi, M Piccolo, M Rama, A Zallo, R Contri, E Guido
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Le résumé fourni par la source
In a sample of 471×106 BB̄ events collected with the BABAR detector at the PEP-II e +e - collider we study the rare decays B→K( *) -+ -, where - +- - is either e +e - or μ +μ -. We report results on partial branching fractions and isospin asymmetries in seven bins of dilepton mass-squared. We further present CP and lepton-flavor asymmetries for dilepton masses below and above the J/ψ resonance. We find no evidence for CP or lepton-flavor violation. The partial branching fractions and isospin asymmetries are consistent with the Standard Model predictions and with results from other experiments. © 2012 American Physical Society.
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Les sujets associés
Particle physics theoretical and experimental studiesQuantum Chromodynamics and Particle InteractionsComputational Physics and Python Applications