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Measurement of the Branching Fraction and CP Content for the Decay $B^0 \to D^{*+}D^{*-}$
Authors :
Aubert, B. Boutigny, D. Gaillard, J.M. Hicheur, A. Karyotakis, Y. Lees, J.P. Robbe, P. Tisserand, V. Zghiche, A. Palano, A. Pompili, A Chen, G.P. Chen, J.C. Qi, N.D. Rong, G. Wang, P. Zhu, Y.S. Eigen, G. Stugu, B. Abrams, G.S. Borgland, A.W. Breon, A.B. Brown, D.N. Button-Shafer, J. Cahn, R.N. Gill, M.S. Gritsan, A.V. Groysman, Y. Jacobsen, R.G. Kadel, R.W. Kadyk, J. Kerth, L.T. Kolomensky, Yu.G. Kral, J.F. Leclerc, C. Levi, M.E. Lynch, G. Oddone, P.J. Pripstein, M. Roe, N.A. Romosan, A. Ronan, M.T. Shelkov, V.G. Telnov, A.V. Wenzel, W.A. Harrison, T.J. Hawkes, C.M. Knowles, D.J. O'Neale, S.W. Penny, R.C. Watson, A.T. Watson, N.K. Deppermann, T. Goetzen, K. Koch, H. Kunze, M. Lewandowski, B. Peters, K. Schmuecker, H. Steinke, M. Barlow, N.R. Bhimji, W. Chevalier, N. Clark, P.J. Cottingham, W.N. Foster, B. Mackay, C. Wilson, F.F. Abe, K. Hearty, C. Mattison, T.S. McKenna, J.A. Thiessen, D. Jolly, S. McKemey, A.K. Blinov, V.E. Bukin, A.D. Bukin, D.A. Buzykaev, A.R. Golubev, V.B. Ivanchenko, V.N. Korol, A.A. Kravchenko, E.A. Onuchin, A.P. Serednyakov, S.I. Skovpen, Yu.I. Telnov, V.I. Yushkov, A.N. Best, D. Chao, M. Kirkby, D. Lankford, A.J. Mandelkern, M. McMahon, S. Stoker, D.P. Arisaka, K. Buchanan, C. Chun, S. MacFarlane, D.B. Prell, S. Rahatlou, S. Raven, G. Sharma, V. Campagnari, C. Dahmes, B. Hart, P.A. Kuznetsova, N. Levy, S.L. Long, O. Lu, A. Mazur, M.A. Richman, J.D. Verkerke, W. Beringer, J. Eisner, A.M. Grothe, M. Heusch, C.A. Lockman, W.S. Pulliam, T. Schalk, T. Schmitz, R.E. Schumm, B.A. Seiden, A. Turri, M. Walkowiak, W. Williams, D.C. Wilson, M.G. Chen, E. Dubois-Felsmann, G.P. Dvoretskii, A. Hitlin, D.G. Metzler, S. Oyang, J. Porter, F.C. Ryd, A. Samuel, A. Yang, S. Zhu, R.Y. Devmal, S. Jayatilleke, S. Mancinelli, G. Meadows, B.T. Sokoloff, M.D. Barillari, T. Bloom, P. Ford, W.T. Nauenberg, U. Olivas, A. Rankin, P. Roy, J. Smith, J.G. Van Hoek, W.C. Zhang, L. Blouw, J. Harton, J.L. Krishnamurthy, M. Soffer, A. Toki, W.H. Wilson, R.J. Zhang, J. Brandt, T. Brose, J. Colberg, T. Dickopp, M. Dubitzky, R.S. Hauke, A. Maly, E. Muller-Pfefferkorn, R. Otto, S. Schubert, K.R. Schwierz, R. Spaan, B. Wilden, L. Bernard, D. Bonneaud, G.R. Brochard, F. Cohen-Tanugi, J. Ferrag, S. T'Jampens, S. Thiebaux, C. Vasileiadis, G. Verderi, M. Anjomshoaa, A. Bernet, R. Khan, A. Lavin, D. Muheim, F. Playfer, S. Swain, J.E. Tinslay, J. Falbo, M. Borean, C. Bozzi, C. Piemontese, L. Treadwell, E. Anulli, F. Baldini-Ferroli, R. Calcaterra, A. De Sangro, R. Falciai, D. Finocchiaro, G. Patteri, P. Peruzzi, I.M. Piccolo, M. Xie, Y. Zallo, A. Bagnasco, S. Buzzo, A. Contri, R. Crosetti, G. Lo Vetere, M. Macri, M. Monge, M.R. Passaggio, S. Pastore, F.C. Patrignani, C. Robutti, E. Santroni, A. Tosi, S. Morii, M. Bartoldus, R. Hamilton, R. Mallik, U. Cochran, J. Crawley, H.B. Fischer, P.A. Lamsa, J. Meyer, W.T. Rosenberg, E.I. Yi, J. Grosdidier, G. Hocker, A. Lacker, H.M. Laplace, S. Le Diberder, F. Lepeltier, V. Lutz, A.M. Plaszczynski, Stéphane Schune, M.H. Trincaz-Duvoid, S. Wormser, G. Bionta, R.M. Brigljevic, V. Lange, D.J. Mugge, M. Van Bibber, K. Wright, D.M. Bevan, A.J. Fry, J.R. Gabathuler, E. Gamet, R. George, M. Kay, M. Payne, D.J. Sloane, R.J. Touramanis, C. Aspinwall, M.L. Bowerman, D.A. Dauncey, P.D. Egede, U. Eschrich, I. Morton, G.W. Nash, J.A. Sanders, P. Smith, D. Back, J.J. Bellodi, G. Dixon, P. Harrison, P.F. Potter, R.J.L. Shorthouse, H.W. Strother, P. Vidal, P.B. Cowan, G. George, S. Green, M.G. Kurup, A. Marker, C.E. McMahon, T.R. Ricciardi, S. Salvatore, F. Vaitsas, G. Brown, D. Davis, C.L. Allison, J. Barlow, R.J. Boyd, J.T. Forti, A.C. Jackson, F. Lafferty, G.D. Savvas, N. Weatherall, J.H. Williams, J.C. Farbin, A. Jawahery, A. Lillard, V. Olsen, J. Roberts, D.A. Schieck, J.R. Blaylock, G. Dallapiccola, C. Flood, K.T. Hertzbach, S.S. Kofler, R. Koptchev, V.B. Moore, T.B. Staengle, H. Willocq, S. Brau, B. Cowan, R. Sciolla, G. Taylor, F. Yamamoto, R.K. Milek, M. Patel, P.M. Palombo, F. Bauer, J.M. Cremaldi, L. Eschenburg, V. Kroeger, R. Reidy, J. Sanders, D.A. Summers, D.J. Hast, C. Nief, J.Y. Taras, P. Nicholson, H. Cartaro, C. Cavallo, N. De Nardo, G. Fabozzi, F. Gatto, C. Lista, L. Paolucci, P. Piccolo, D. Sciacca, C. LoSecco, J.M. Alsmiller, J.R.G. Gabriel, T.A. Brau, J. Frey, R. Grauges, E. Iwasaki, M. Sinev, N.B. Strom, D. Colecchia, F. Dal Corso, F. Dorigo, A. Galeazzi, F. Margoni, M. Michelon, G. Morandin, M. Posocco, M. Rotondo, M. Simonetto, F. Stroili, R. Torassa, E. Voci, C. Benayoun, Maurice. Briand, H. Chauveau, J. David, P. De La Vaissiere, C. Del Buono, L. Hamon, O. Leruste, P. Ocariz, J. Pivk, M. Roos, L. Stark, J. Manfredi, P.F. Re, V. Speziali, V. Frank, E.D. Gladney, L. Guo, Q.H. Panetta, J. Angelini, C. Batignani, G. Bettarini, S. Bondioli, M. Bucci, F. Campagna, E. Carpinelli, M. Forti, F. Giorgi, M.A. Lusiani, A. Marchiori, G. Martinez-Vidal, F. Morganti, M. Neri, N. Paoloni, E. Rama, M. Rizzo, G. Sandrelli, F. Simi, G. Triggiani, G. Walsh, J. Haire, M. Judd, D. Paick, K. Turnbull, L. Wagoner, D.E. Albert, J. Lu, C. Miftakov, V. Schaffner, S.F. Smith, A.J.S. Tumanov, A. Varnes, E.W. Cavoto, G. Del Re, D. Faccini, R. Ferrarotto, F. Ferroni, F. Mazzoni, M.A. Morganti, S. Piredda, G. Serra, M. Voena, C. Christ, S. Waldi, R. Adye, T. De Groot, N. Franek, B. Geddes, N.I. Gopal, G.P. Xella, S.M. Aleksan, R. Emery, S. Gaidot, A. Ganzhur, S.F. Giraud, P.-F. Hamel De Monchenault, G. Kozanecki, W. Langer, M. London, G.W. Mayer, B. Serfass, B. Vasseur, G. Yeche, Ch. Zito, M. Purohit, M.V. Singh, H. Weidemann, A.W. Yumiceva, F.X. Adam, I. Aston, D. Berger, N. Boyarski, A.M. Calderini, G. Convery, M.R. Coupal, D.P. Dong, D. Dorfan, J. Dunwoodie, W. Field, R.C. Glanzman, T. Gowdy, S.J. Haas, T. Halyo, V. Himel, T. Hrynova, T. Huffer, M.E. Innes, W.R. Jessop, C.P. Kelsey, M.H. Kim, P. Kocian, M.L. Langenegger, U. Leith, D.W.G.S. Luitz, S. Luth, V. Lynch, H.L. Marsiske, H. Menke, S. Messner, R. Muller, D.R. O'Grady, C.P. Ozcan, V.E. Perazzo, A. Perl, M. Petrak, S. Quinn, H. Ratcliff, B.N. Robertson, S.H. Roodman, A. Salnikov, A.A. Schietinger, T. Schindler, R.H. Schwiening, J. Snyder, A. Soha, A. Spanier, S.M. Stelzer, J. Su, D. Sullivan, M.K. Tanaka, H.A. Vavra, J. Weaver, M. Weinstein, A.J.R. Wisniewski, W.J. Wright, D.H. Young, C.C. Burchat, P.R. Cheng, C.H. Meyer, T.I. Roat, C. Henderson, R. Bugg, W. Cohn, H. Izen, J.M. Kitayama, I. Lou, X.C. Bianchi, F. Bona, M. Gamba, D. Bosisio, L. Ricca, G. Dittongo, S. Lanceri, L. Poropat, P. Vuagnin, G. Panvini, R.S. Brown, C.M. Jackson, P.D. Kowalewski, R. Roney, J.M. Band, H.R. Charles, E. Dasu, S. Datta, M. Eichenbaum, A.M. Hu, H. Johnson, J.R. Liu, R. Di Lodovico, F. Pan, Y. Prepost, R. Scott, I.J. Sekula, S.J. Von Wimmersperg-Toeller, J.H. Wu, S.L. Yu, Z. Kordich, T.M.B. Neal, H. Laboratoire d'Annecy de Physique des Particules (LAPP) Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS) Laboratoire Leprince-Ringuet (LLR) Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3) Laboratoire de l'Accélérateur Linéaire (LAL) Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11) Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS) BABAR
Source :
Physical Review Letters, Physical Review Letters, American Physical Society, 2002, 89, pp.061801
Publication Year :
2002
Publisher :
HAL CCSD, 2002.
Abstract
We report a measurement of the branching fraction of the decay B^0 --> D^{*+} D^{*-} and of the CP-odd component of its final state using the BaBar detector. With data corresponding to an integrated luminosity of 20.4 fb^{-1} collected at the Upsilon(4S) resonance during 1999-2000, we have reconstructed 38 candidate signal events in the mode B^0 --> D^{*+}D^{*-} with an estimated background of 6.2 \pm 0.5 events. From these events, we determine the branching fraction to be BR(B^0 --> D^{*+}D^{*-}) = (8.3 +/- 1.6(stat) +/- 1.2(syst)) x 10^{-4}. The measured CP-odd fraction of the final state is 0.22 +/- 0.18(stat) +/- 0.03(syst).
Details
Language :
English
ISSN :
00319007 and 10797114
Database :
OpenAIRE
Journal :
Physical Review Letters, Physical Review Letters, American Physical Society, 2002, 89, pp.061801
Accession number :
edsair.od.......212..2eee3d3796b3db40c084dbfaaf439a9e