Measurement of the Semileptonic Decays B $\to D \tau \bar{\nu}$ and B $\to D* \tau \bar\{\nu}$

D tau nubar and B --> D* tau nubar, which are potentially sensitive to non--Standard Model amplitudes. The data sample comprises 232x10^6 Upsilon(4S) --> BBbar decays collected with the BaBar detector at the PEP-II e+e- storage ring. We obtain B(B- --> D0 tau nubar) = (0.63 +/- 0.38 +/- 0.10 +/- 0.06)%, B(B- --> D*0 tau nubar) = (2.35 +/- 0.49 +/- 0.22 +/- 0.18)%, B(B0bar --> D+ tau nubar) = (1.03 +/- 0.35 +/- 0.14 +/- 0.10)%, and B(B0bar --> D*+ tau nubar) = (1.15 +/- 0.33 +/- 0.04 +/- 0.04)%, where the uncertainties are statistical, systematic, and normalization, respectively. By combining B- and B0bar results, we also obtain the branching fractions B(B --> D tau nubar) = (0.90 +/- 0.26 +/- 0.11 +/- 0.06)% and B(B --> D* tau nubar) = (1.81 +/- 0.33 +/- 0.11 +/- 0.06)% (quoted for the B- lifetime), with significances of 3.5 sigma and 6.2 sigma. -->
Jazyk: English
Přístupová URL adresa: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::8df1753c84c169bb150211700e29dcd0
https://hal.in2p3.fr/in2p3-00165259
Přírůstkové číslo: edsair.dedup.wf.001..8df1753c84c169bb150211700e29dcd0
Autor: Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J.P., Poireau, V., Prudent, X., Tisserand, V., Zghiche, A., Garra Tico, J., Grauges, E., Lopez, L., Palano, A., Eigen, G., Stugu, B., Sun, Luyan, S. Abrams, G., Battaglia, M., N. Brown, D., Button-Shafer, J., N. Cahn, R., Groysman, Y., G. Jacobsen, R., A. Kadyk, J., T. Kerth, L., G. Kolomensky, Yu., Kukartsev, G., Lopes Pegna, D., Lynch, G., M. Mir, L., J. Orimoto, T., T. Ronan, M., K. Tackmann,, Wenzel, W.A., Del Amo Sanchez, P., M. Hawkes, C., T. Watson, A., Held, T., Koch, H., Lewandowski, B., Pelizaeus, M., Schroeder, T., Steinke, M., Walker, D., J. Asgeirsson, D., Cuhadar-Donszelmann, T., G. Fulsom, B., Hearty, C., S. Mattison, T., A. Mckenna, J., Khan, A., Saleem, M., Teodorescu, L., E. Blinov, V., D. Bukin, A., P. Druzhinin, V., B. Golubev, V., P. Onuchin, A., I. Serednyakov, S., I. Skovpen, Yu., P. Solodov, E., Yu. Todyshev, K., Bondioli, M., Curry, S., Eschrich, I., Kirkby, D., J. Lankford, A., Lund, P., Mandelkern, M., C. Martin, E., P. Stoker, D., Abachi, S., Buchanan, C., D. Foulkes, S., W. Gary, J., Liu, Franklin, Long, O., C. Shen, B., Zhang, L., P. Paar, H., Rahatlou, S., Sharma, V., W. Berryhill, J., Campagnari, C., Cunha, A., Dahmes, B., M. Hong, T., Kovalskyi, D., D. Richman, J., W. Beck, T., M. Eisner, A., J. Flacco, C., Heusch, C.A., Kroseberg, J., S. Lockman, W., Schalk, T., A. Schumm, B., Seiden, A., C. Williams, D., G. Wilson, M., O. Winstrom, L., Chen, E., H. Cheng, C., Fang, F., G. Hitlin, D., Narsky, I., Piatenko, T., C. Porter, F., Andreassen, R., Mancinelli, G., T. Meadows, B., Mishra, K., D. Sokoloff, M., Blanc, F., C. Bloom, P., Chen, Si, T. Ford, W., F. Hirschauer, J., Kreisel, A., Nagel, M., Nauenberg, U., Olivas, A., G. Smith, J., A. Ulmer, K., R. Wagner, S., Zhang, J., M. Gabareen, A., Soffer, A., H. Toki, W., J. Wilson, R., Winklmeier, F., Zeng, Q., D. Altenburg, D., Feltresi, E., Hauke, A., Jasper, H., Merkel, J., Petzold, A., Spaan, B., Wacker, K., Brandt, T., Klose, V., J. Kobel, M., M. Lacker, H., F. Mader, W., Nogowski, R., Schubert, J., R. Schubert, K., Schwierz, R., E. Sundermann, J., Volk, A., Bernard , D., Bonneaud, G.R., Latour, E., Lombardo, V., Thiebaux, C., Verderi, M., J. Clark, P., Gradl, W., Muheim, F., Playfer, S., I. Robertson, A., Xie, Y., Andreotti, M., Bettoni, D., Bozzi, C., Calabrese, R., Cecchi, A., Cibinetto, G., Franchini, P., Luppi, E., Negrini, M., Petrella, A., Piemontese, L., Prencipe, E., Santoro, V., Anulli, F., Baldini-Ferroli, R., Calcaterra, A., De Sangro, R., Finocchiaro, G., Pacetti, S., Patteri, P., M. Peruzzi, I., Piccolo, M., Rama, M., Zallo, A., Buzzo, A., Contri, R., Lo Vetere, M., M. Macri, M., R. Monge, M., Passaggio, S., Patrignani, C., Robutti, E., Santroni, A., Tosi, S., S. Chaisanguanthum, K., Morii, M., Wu, J., S. Dubitzky, R., Marks, J., Schenk, S., Uwer, U., J. Bard, D., D. Dauncey, P., L. Flack, R., A. Nash, J., B. Nikolich, M., Panduro Vazquez, W., Tibbetts, M., K. Behera, P., Chai, X., J. Charles, M., Mallik, U., T. Meyer, N., Ziegler, V., Cochran, J., B. Crawley, H., Dong, L., Eyges, V., T. Meyer, W., Prell, S., I. Rosenberg, E., E. Rubin, A., V. Gritsan, A., J. Guo, Z., K. Lae, C., G. Denig, A., Fritsch, M., Schott, G., Arnaud, N., Bequilleux, J., Davier, M., Grosdidier, G., Höcker, A., Lepeltier, V., Le Diberder, F., Lutz, A.M., Pruvot, S., Rodier, S., Roudeau, P., Schune, M.H., Serrano, J., Sordini, V., Stocchi, A., Wang, W.F., Wormser, G., J. Lange, D., M. Wright, D., Bingham, I., Chavez, C.A., J. Forster, I., R. Fry, J., Gabathuler, E., Gamet, R., E. Hutchcroft, D., J. Payne, D., C. Schofield, K., Touramanis, C., J. Bevan, A., A. George, K., Di Lodovico, F., Menges, W., Sacco, R., Cowan, G., U. Flaecher, H., Hopkins, D.A., Paramesvaran, S., Salvatore, F., C. Wren, A., L. Davis, C., Allison, J., R. Barlow, N., J. Barlow, R., M. Chia, Y., L. Edgar, C., D. Lafferty, G., J. West, T., I. Yi, J., Anderson, J., Chen, C., Jawahery, A., Roberts, D.A., Simi, G., M. Tuggle, J., Blaylock, G., Dallapiccola, C., Hertzbach, S.S., Li, Xiaojian, B. Moore, T., Salvati, E., Saremi, S., Cowan, R., Dujmic, D., H. Fisher, P., Koeneke, K., Sciolla, G., J. Sekula, S., Spitznagel, M., Taylor, F., K. Yamamoto, R., Zhao, M., Zheng, YunLin Jacques, E. Mclachlin, S., M. Patel, P., H. Robertson, S., Lazzaro, A., Palombo, F., M. Bauer, J., Cremaldi, L., Eschenburg, V., Godang, R., Kroeger, R., Sanders, D.A., J. Summers, D., W. Zhao, H., Brunet, S., Cˆot'E, D., Simard, M., Taras, P., B. Viaud, F., Nicholson, H., De Nardo, G., Fabozzi, F., L. Lista, ‡, Monorchio, D., Sciacca, C., A. Baak, M., Raven, G., L. Snoek, H., P. Jessop, C., M. Losecco, J., Benelli, G., Corwin, L.A., Honscheid, K., Kagan, H., Kass, R., P. Morris, J., M. Rahimi, A., Regensburger, J.J., K. Wong, Q., L. Blount, N., Brau, J., Frey, R., Igonkina, O., A. Kolb, J., Lu, M., Rahmat, R., B. Sinev, N., Strom, D., Strube, J., Torrence, E., Gagliardi, N., Gaz, A., Margoni, M., Morandin, M., Pompili, A., Posocco, M., Rotondo, M., Simonetto, F., Stroili, R., Voci, C., Ben-Haim, E., Briand, H., Calderini, G., Chauveau, J., David, P., Del Buono, L., De La Vaissiere, C., Hamon, O., Leruste, P., Malcles, J., Ocariz, J., Perez, A., Gladney, L., Biasini, M., Covarelli, R., Manoni, E., Angelini, C., Batignani, G., Bettarini, S., Carpinelli, M., Cenci, R., Cervelli, A., Forti, F., A. Giorgi, M., Lusiani, A., Marchiori, G., A. Mazur, M., Morganti, M., Neri, N., Paoloni, E., Rizzo, G., J. Walsh, J., Haire, M., Biesiada, J., Elmer, P., P. Lau, Y., Lu, C., Olsen, J., J. S. Smith, A., V. Telnov, A., Baracchini, E., Bellini, F., Cavoto, G., D'Orazio, A., Del Re, D., Di Marco, E., Faccini, R., Ferrarotto, F., Ferroni, F., Gaspero, M., D. Jackson, P., Li Gioi, L., A. Mazzoni, M., Morganti, S., Piredda, G., Polci, F., Renga, F., Voena, C., Ebert, M., Hartmann, T., Schr¨oder, H., Waldi, R., Adye, T., Castelli, G., Franek, B., O. Olaiya, E., Ricciardi, S., Roethel, W., F. Wilson, F., Aleksan, R., Emery, S., Escalier, M., Gaidot, A., Ganzhur, S.F., Hamel De Monchenault, G., Kozanecki, W., Vasseur, G., Yeche, C., Zito, M., R. Chen, X., Liu, Hong, Park, W., V. Purohit, M., R. Wilson, J., T. Allen, M., Aston, D., Bartoldus, R., Bechtle, P., Berger, N., Claus, R., P. Coleman, J., R. Convery, M., C. Dingfelder, J., Dorfan, J., P. Dubois-Felsmann, G., Dunwoodie, W., C. Field, R., Glanzman, T., J. Gowdy, S., T. Graham, M., Grenier, P., Hast, C., Hryn'Ova, T., R. Innes, W., Kaminski, J., H. Kelsey, M., Kim, H., Kim, P., L. Kocian, M., W. G. S. Leith, D., Li, S., Luitz, S., Luth, V., L. Lynch, H., B. Macfarlane, D., Marsiske, H., Messner, R., R. Muller, D., P. O'Grady, C., Ofte, I., Perazzo, A., Perl, M., Pulliam, T., N. Ratcliff, B., Roodman, A., A. Salnikov, A., H. Schindler, R., Schwiening, J., Snyder, A., Stelzer, J., Su, D., K. Sullivan, M., Suzuki, K., K. Swain, S., M. Thompson, J., Va'Vra, J., Van Bakel, N., P. Wagner, A., Weaver, M., J. Wisniewski, W., Wittgen, M., H. Wright, D., K. Yarritu, A., Yi, K., C. Young, C., R. Burchat, P., J. Edwards, A., Majewski, S.A., A. Petersen, B., Wilden, L., Ahmed, Mohamed-Salem, S. Alam, M., Bula, R., A. Ernst, J., Jain, V., Pan, B., A. Saeed, M., R. Wappler, F., B. Zain, S., Bugg, W., Krishnamurthy, M., M. Spanier, S., Eckmann, R., L. Ritchie, J., M. Ruland, A., J. Schilling, C., F. Schwitters, R., M. Izen, J., C. Lou, X., Ye, S., Bianchi, F., Gallo, F., Gamba, D., Pelliccioni, M., Bomben, M., Bosisio, L., Cartaro, C., Cossutti, F., Della Ricca, G., Lanceri, L., Vitale, L., Azzolini, V., Lopez-March, N., Martinez-Vidal, F., Milanes, D.A., Oyanguren, A., Albert, J., Banerjee, Sw., Bhuyan, B., Hamano, K., Kowalewski, R., M. Nugent, I., M. Roney, J., J. Sobie, R., Back, J.J., F. Harrison, P., Ilic, J., E. Latham, T., B. Mohanty, G., Pappagallo, M., Band, H.R., Chen, X., Dasu, S., T. Flood, K., Hollar, J.J., E. Kutter, P., Pan, Y., Pierini, M., Prepost, R., L. Wu, S., Neal, H.
Přispěvatelé: 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), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), BABAR, Girod, Dominique, Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)
Jazyk: angličtina
Rok vydání: 2007
Předmět:
Zdroj: 2007 Europhysics Conference on High Energy Physics
2007 Europhysics Conference on High Energy Physics, Jul 2007, Manchester, United Kingdom
Popis: 7 pages, 1 postscript figures, submitted to EPS 2007; We present preliminary measurements of branching fractions for the semileptonic decays B --> D tau nubar and B --> D* tau nubar, which are potentially sensitive to non--Standard Model amplitudes. The data sample comprises 232x10^6 Upsilon(4S) --> BBbar decays collected with the BaBar detector at the PEP-II e+e- storage ring. We obtain B(B- --> D0 tau nubar) = (0.63 +/- 0.38 +/- 0.10 +/- 0.06)%, B(B- --> D*0 tau nubar) = (2.35 +/- 0.49 +/- 0.22 +/- 0.18)%, B(B0bar --> D+ tau nubar) = (1.03 +/- 0.35 +/- 0.14 +/- 0.10)%, and B(B0bar --> D*+ tau nubar) = (1.15 +/- 0.33 +/- 0.04 +/- 0.04)%, where the uncertainties are statistical, systematic, and normalization, respectively. By combining B- and B0bar results, we also obtain the branching fractions B(B --> D tau nubar) = (0.90 +/- 0.26 +/- 0.11 +/- 0.06)% and B(B --> D* tau nubar) = (1.81 +/- 0.33 +/- 0.11 +/- 0.06)% (quoted for the B- lifetime), with significances of 3.5 sigma and 6.2 sigma.
Databáze: OpenAIRE
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