Title: | Observation of time-reversal violation in the B0 meson system |
Authors: | Poireau, V Tisserand, V Garra Tico, J Grauges, E Palano, A Eigen, G Stugu, B Brown, DN Kerth, LT Kolomensky, YG Lo Vetere, M Monge, MR Passaggio, S Patrignani, C Robutti, E Bhuyan, B Prasad, V Lee, CL Morii, M Edwards, AJ Lynch, G Adametz, A Uwer, U Lacker, HM Lueck, T Dauncey, PD Mallik, U Chen, C Cochran, J Meyer, WT Prell, S Koch, H Rubin, AE Gritsan, AV Guo, ZJ Arnaud, N Davier, M Derkach, D Grosdidier, G Le Diberder, F Lutz, AM Malaescu, B Schroeder, T Roudeau, P Schune, MH Stocchi, A Wormser, G Lange, DJ Wright, DM Chavez, CA Coleman, JP Fry, JR Gabathuler, E Asgeirsson, DJ Hutchcroft, DE Payne, DJ Touramanis, C Bevan, AJ Di Lodovico, F Sacco, R Sigamani, M Cowan, G Brown, DN Davis, CL Hearty, C Denig, AG Fritsch, M Gradl, W Griessinger, K Hafner, A Prencipe, E Barlow, RJ Jackson, G Lafferty, GD Behn, E Mattison, TS Cenci, R Hamilton, B Jawahery, A Roberts, DA Dallapiccola, C Cowan, R Dujmic, D Sciolla, G Cheaib, R Lindemann, D McKenna, JA Patel, PM Robertson, SH Biassoni, P Neri, N Palombo, F Stracka, S Cremaldi, L Godang, R Kroeger, R Sonnek, P So, RY Summers, DJ Nguyen, X Simard, M Taras, P De Nardo, G Monorchio, D Onorato, G Sciacca, C Martinelli, M Raven, G Khan, A Jessop, CP LoSecco, JM Wang, WF Honscheid, K Kass, R Brau, J Frey, R Sinev, NB Strom, D Torrence, E Blinov, VE Feltresi, E Gagliardi, N Margoni, M Morandin, M Pompili, A Posocco, M Rotondo, M Simi, G Simonetto, F Stroili, R Buzykaev, AR Akar, S Ben-Haim, E Bomben, M Bonneaud, GR Briand, H Calderini, G Chauveau, J Hamon, O Leruste, P Marchiori, G Druzhinin, VP Ocariz, J Sitt, S Biasini, M Manoni, E Pacetti, S Rossi, A Angelini, C Batignani, G Bettarini, S Carpinelli, M Golubev, VB Casarosa, G Cervelli, A Forti, F Giorgi, MA Lusiani, A Oberhof, B Paoloni, E Perez, A Rizzo, G Walsh, JJ Kravchenko, EA Pegna, DL Olsen, J Smith, AJS Telnov, AV Anulli, F Faccini, R Ferrarotto, F Ferroni, F Gaspero, M Gioi, LL Onuchin, AP Mazzoni, MA Piredda, G Buenger, C Gruenberg, O Hartmann, T Leddig, T Schroeder, H Voss, C Waldi, R Adye, T Serednyakov, SI Olaiya, EO Wilson, FF Emery, S de Monchenault, GH Vasseur, G Yeche, C Aston, D Bard, DJ Bartoldus, R Benitez, JF Skovpen, YI Cartaro, C Convery, MR Dorfan, J Dubois-Felsmann, GP Dunwoodie, W Ebert, M Field, RC Sevilla, MF Fulsom, BG Gabareen, AM Solodov, EP Graham, MT Grenier, P Hast, C Innes, WR Kelsey, MH Kim, P Kocian, ML Leith, DWGS Lewis, P Lindquist, B Todyshev, KY Luitz, S Luth, V Lynch, HL MacFarlane, DB Muller, DR Neal, H Nelson, S Perl, M Pulliam, T Ratcliff, BN Yushkov, AN Roodman, A Salnikov, AA Schindler, RH Snyder, A Su, D Sullivan, MK Va'vra, J Wagner, AP Wisniewski, WJ Wittgen, M Bondioli, M Wright, DH Wulsin, HW Young, CC Ziegler, V Park, W Purohit, MV White, RM Wilson, JR Randle-Conde, A Sekula, SJ Kirkby, D Bellis, M Burchat, PR Miyashita, TS Puccio, EMT Alam, MS Ernst, JA Gorodeisky, R Guttman, N Peimer, DR Soffer, A Lankford, AJ Lund, P Spanier, SM Ritchie, JL Ruland, AM Schwitters, RF Wray, BC Izen, JM Lou, XC Bianchi, F Gamba, D Mandelkern, M Zambito, S Lanceri, L Vitale, L Bernabeu, J Martinez-Vidal, F Oyanguren, A Villanueva-Perez, P Ahmed, H Albert, J Banerjee, S Atmacan, H Bernlochner, FU Choi, HHF King, GJ Kowalewski, R Lewczuk, MJ Nugent, IM Roney, JM Sobie, RJ Tasneem, N Gershon, TJ Gary, JW Harrison, PF Latham, TE Band, HR Dasu, S Pan, Y Prepost, R Wu, SL Liu, F Long, O Vitug, GM Campagnari, C Hong, TM Kovalskyi, D Richman, JD West, CA Eisner, AM Kroseberg, J Lockman, WS Martinez, AJ Schumm, BA Seiden, A Chao, DS Cheng, CH Echenard, B Flood, KT Hitlin, DG Ongmongkolkul, P Porter, FC Rakitin, AY Andreassen, R Huard, Z Meadows, BT Sokoloff, MD Sun, L Bloom, PC Ford, WT Gaz, A Nauenberg, U Smith, JG Wagner, SR Ayad, R Toki, WH Spaan, B Schubert, KR Schwierz, R Bernard, D Verderi, M Clark, PJ Playfer, S Bettoni, D Bozzi, C Calabrese, R Cibinetto, G Fioravanti, E Garzia, I Luppi, E Munerato, M Piemontese, L Santoro, V Baldini-Ferroli, R Calcaterra, A de Sangro, R Finocchiaro, G Patteri, P Peruzzi, IM Piccolo, M Rama, M Zallo, A Contri, R Guido, E |
Issue Date: | 2012 |
Publisher: | American Physical Society |
Citation: | Physical Review Letters, 109, Article no. 211801, 2012 |
Abstract: | Although CP violation in the B meson system has been well established by the B factories, there has been no direct observation of time-reversal violation. The decays of entangled neutral B mesons into definite flavor states (B0 or B¯¯¯0), and J/ψK0L or cc¯K0S final states (referred to as B+ or B−), allow comparisons between the probabilities of four pairs of T-conjugated transitions, for example, B¯¯¯0→B− and B−→B¯¯¯0, as a function of the time difference between the two B decays. Using 468×106 BB¯¯¯ pairs produced in Υ(4S) decays collected by the BABAR detector at SLAC, we measure T-violating parameters in the time evolution of neutral B mesons, yielding ΔS+T=−1.37±0.14(stat)±0.06(syst) and ΔS−T=1.17±0.18(stat)±0.11(syst). These nonzero results represent the first direct observation of T violation through the exchange of initial and final states in transitions that can only be connected by a T-symmetry transformation. |
Description: | The individually named authors work collectively as The BABAR Collaboration. Copyright @ 2012 American Physical Society. |
URI: | http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.109.211801 http://bura.brunel.ac.uk/handle/2438/8575 |
DOI: | http://dx.doi.org/10.1103/PhysRevLett.109.211801 |
ISSN: | 0031-9007 |
Appears in Collections: | Electronic and Electrical Engineering Publications Dept of Electronic and Electrical Engineering Research Papers
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