Study of the fragmentation of b quarks into B mesons at the Z peak

Autor: Heister A, Schael S, Barate R, De Bonis I, Decamp D, Goy C, Lees JP, Merle E, Minard MN, Pietrzyk B, Bravo S, Casado MP, Chmeissani M, Crespo JM, Fernandez E, Fernandez Bosman M, Garrido L, Grauges E, Martinez M, Merino G, Miquel R, Mir LM, Pacheco A, Ruiz H, Colaleo A, Creanza D, de Palma M, Iaselli G, Maggi G, Maggi M, Nuzzo S, Ranieri A, Raso C, Ruggieri E, Selvaggi G, Silvestris L, Tempesta P, Tricomi A, Zito G, Huang X, Lin J, Ouyang Q, Wang T, Xie Y, Xu R, Xue S, Zhang J, Zhang L, Zhao W, Abbaneo D, Azzurri P, Boix G, Buchmuller O, Cattaneo M, Cerutti F, Clerbaux B, Dissertori G, Drevermann H, Forty RW, Frank M, Greening TC, Hansen JB, Harvey J, Janot P, Jost B, Kado M, Mato P, Moutoussi A, Ranjard F, Schlatter D, Schneider O, Spagnolo P, Tejessy W, Teubert F, Tournefier E, Ward J, Ajaltouni Z, Badaud F, Falvard A, Gay P, Henrard P, Jousset J, Michel B, Monteil S, Montret JC, Pallin D, Perret P, Podlyski F, Hansen PD, Hansen JR, Hansen PH, Nilsson BS, Waananen A, Kyriakis A, Markou C, Simopoulou E, Vayaki A, Zachariadou K, Blondel A, Bonneaud G, Brient JC, Rouge A, Rumpf M, Swynghedauw M, Verderi M, Videau H, Ciulli V, Focardi E, Parrini G, Antonelli A, Antonelli M, Bencivenni G, Bologna G, Bossi F, Campana P, Capon G, Chiarella V, Laurelli P, Mannocchi G, Murtas F, Murtas GP, Passalacqua L, Pepe Altarelli M, Halley AW, Lynch JG, Negus P, O'Shea V, Raine C, Thompson AS, Wasserbaech S, Cavanaugh R, Dhamotharan S, Geweniger C, Hanke P, Hansper G, Hepp V, Kluge EE, Putzer A, Sommer J, Tittel K, Werner S, Wunsch M, Beuselinck R, Binnie DM, Cameron W, Dornan PJ, Girone M, Marinelli N, Sedgbeer JK, Thompson JC, Ghete VM, Girtler P, Kneringer E, Kuhn D, Rudolph G, Bouhova Thacker E, Bowdery CK, Finch AJ, Foster F, Hughes G, Jones RWL, Pearson MR, Robertson NA, Giehl I, Jakobs K, Kleinknecht K, Quast G, Renk B, Rohne E, Sander HG, Wachsmuth H, Zeitnitz C, Bonissent A, Carr J, Coyle P, Leroy O, Payre P, Rousseau D, Talby M, Aleppo M, Ragusa F, David A, Dietl H, Ganis G, Huttmann K, Lutjens G, Mannert C, Manner W, Moser HG, Settles R, Stenzel H, Wiedenmann W, Wolf G, Boucrot J, Callot O, Davier M, Duflot L, Grivaz JF, Heusse P, Jacholkowska A, Lefrancois J, Veillet JJ, Videau I, Yuan C, Bagliesi G, Boccali T, Calderini G, Foa L, Giammanco A, Giassi A, Messineo A, Palla F, Sanguinetti G, Sciaba A, Sguazzoni G, Tenchini R, Venturi A, Verdini PG, Blair GA, Cowan G, Green MG, Medcalf T, Misiejuk A, Strong JA, Teixeira Dias P, von Wimmersperg Toeller JH, Clifft RW, Edgecock TR, Norton PR, Tomalin IR, Bloch Devaux B, Colas P, Emery S, Kozanecki W, Lancon E, Lemaire MC, Locci E, Perez P, Rander J, Renardy JF, Roussarie A, Schuller JP, Schwindling J, Trabelsi A, Vallage B, Konstantinidis N, Litke AM, Taylor G, Booth CN, Cartwright S, Combley F, Lehto M, Thompson LF, Affholderbach K, Bohrer A, Brandt S, Grupen C, Ngac A, Prange G, Sieler U, Giannini G, Rothberg J, Armstrong SR, Cranmer K, Elmer P, Ferguson DPS, Gao Y, Gonzalez S, Hayes OJ, Hu H, Jin S, Kile J, McNamara PA, Nielsen J, Orejudos W, Pan YB, Saadi Y, Scott IJ, Walsh J, Wu SL, Wu X, Zobernig G, RI ANTONELLI ANTONELLA/C 6238 2011 Jones Roger/H 5578 2011 Passalacqua Luca/F 5127 2011 Murtas Fabrizio/B 5729 2012 O'Shea Val/G 1279 2010, ROLANDI, LUIGI, LIGABUE, FRANCO
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 de Physique Corpusculaire - Clermont-Ferrand (LPC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-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), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), ALEPH, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), 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), Heister, A, Schael, S, Barate, R, De Bonis, I, Decamp, D, Goy, C, Lees, Jp, Merle, E, Minard, Mn, Pietrzyk, B, Bravo, S, Casado, Mp, Chmeissani, M, Crespo, Jm, Fernandez, E, Fernandez Bosman, M, Garrido, L, Grauges, E, Martinez, M, Merino, G, Miquel, R, Mir, Lm, Pacheco, A, Ruiz, H, Colaleo, A, Creanza, D, de Palma, M, Iaselli, G, Maggi, G, Maggi, M, Nuzzo, S, Ranieri, A, Raso, C, Ruggieri, E, Selvaggi, G, Silvestris, L, Tempesta, P, Tricomi, A, Zito, G, Huang, X, Lin, J, Ouyang, Q, Wang, T, Xie, Y, Xu, R, Xue, S, Zhang, J, Zhang, L, Zhao, W, Abbaneo, D, Azzurri, P, Boix, G, Buchmuller, O, Cattaneo, M, Cerutti, F, Clerbaux, B, Dissertori, G, Drevermann, H, Forty, Rw, Frank, M, Greening, Tc, Hansen, Jb, Harvey, J, Janot, P, Jost, B, Kado, M, Mato, P, Moutoussi, A, Ranjard, F, Rolandi, Luigi, Schlatter, D, Schneider, O, Spagnolo, P, Tejessy, W, Teubert, F, Tournefier, E, Ward, J, Ajaltouni, Z, Badaud, F, Falvard, A, Gay, P, Henrard, P, Jousset, J, Michel, B, Monteil, S, Montret, Jc, Pallin, D, Perret, P, Podlyski, F, Hansen, Pd, Hansen, Jr, Hansen, Ph, Nilsson, B, Waananen, A, Kyriakis, A, Markou, C, Simopoulou, E, Vayaki, A, Zachariadou, K, Blondel, A, Bonneaud, G, Brient, Jc, Rouge, A, Rumpf, M, Swynghedauw, M, Verderi, M, Videau, H, Ciulli, V, Focardi, E, Parrini, G, Antonelli, A, Antonelli, M, Bencivenni, G, Bologna, G, Bossi, F, Campana, P, Capon, G, Chiarella, V, Laurelli, P, Mannocchi, G, Murtas, F, Murtas, Gp, Passalacqua, L, Pepe Altarelli, M, Halley, Aw, Lynch, Jg, Negus, P, O'Shea, V, Raine, C, Thompson, A, Wasserbaech, S, Cavanaugh, R, Dhamotharan, S, Geweniger, C, Hanke, P, Hansper, G, Hepp, V, Kluge, Ee, Putzer, A, Sommer, J, Tittel, K, Werner, S, Wunsch, M, Beuselinck, R, Binnie, Dm, Cameron, W, Dornan, Pj, Girone, M, Marinelli, N, Sedgbeer, Jk, Thompson, Jc, Ghete, Vm, Girtler, P, Kneringer, E, Kuhn, D, Rudolph, G, Bouhova Thacker, E, Bowdery, Ck, Finch, Aj, Foster, F, Hughes, G, Jones, Rwl, Pearson, Mr, Robertson, Na, Giehl, I, Jakobs, K, Kleinknecht, K, Quast, G, Renk, B, Rohne, E, Sander, Hg, Wachsmuth, H, Zeitnitz, C, Bonissent, A, Carr, J, Coyle, P, Leroy, O, Payre, P, Rousseau, D, Talby, M, Aleppo, M, Ragusa, F, David, A, Dietl, H, Ganis, G, Huttmann, K, Lutjens, G, Mannert, C, Manner, W, Moser, Hg, Settles, R, Stenzel, H, Wiedenmann, W, Wolf, G, Boucrot, J, Callot, O, Davier, M, Duflot, L, Grivaz, Jf, Heusse, P, Jacholkowska, A, Lefrancois, J, Veillet, Jj, Videau, I, Yuan, C, Bagliesi, G, Boccali, T, Calderini, G, Foa, L, Giammanco, A, Giassi, A, Ligabue, Franco, Messineo, A, Palla, F, Sanguinetti, G, Sciaba, A, Sguazzoni, G, Tenchini, R, Venturi, A, Verdini, Pg, Blair, Ga, Cowan, G, Green, Mg, Medcalf, T, Misiejuk, A, Strong, Ja, Teixeira Dias, P, von Wimmersperg Toeller, Jh, Clifft, Rw, Edgecock, Tr, Norton, Pr, Tomalin, Ir, Bloch Devaux, B, Colas, P, Emery, S, Kozanecki, W, Lancon, E, Lemaire, Mc, Locci, E, Perez, P, Rander, J, Renardy, Jf, Roussarie, A, Schuller, Jp, Schwindling, J, Trabelsi, A, Vallage, B, Konstantinidis, N, Litke, Am, Taylor, G, Booth, Cn, Cartwright, S, Combley, F, Lehto, M, Thompson, Lf, Affholderbach, K, Bohrer, A, Brandt, S, Grupen, C, Ngac, A, Prange, G, Sieler, U, Giannini, G, Rothberg, J, Armstrong, Sr, Cranmer, K, Elmer, P, Ferguson, Dp, Gao, Y, Gonzalez, S, Hayes, Oj, Hu, H, Jin, S, Kile, J, Mcnamara, Pa, Nielsen, J, Orejudos, W, Pan, Yb, Saadi, Y, Scott, Ij, Walsh, J, Wu, Sl, Wu, X, Zobernig, G, RI ANTONELLI ANTONELLA/C 6238 2011 Jones Roger/H 5578 2011 Passalacqua Luca/F 5127 2011 Murtas Fabrizio/B 5729 2012 O'Shea Val/G 1279, 2010
Rok vydání: 2001
Předmět:
Zdroj: Physics Letters B
Physics Letters B, Elsevier, 2001, 512, pp.30-48
Physics Letters B, 2001, 512, pp.30-48
ISSN: 0370-2693
DOI: 10.1016/s0370-2693(01)00690-6
Popis: The fragmentation of b quarks into B mesons is studied with four million hadronic Z decays collected by the ALEPH experiment during the years 1991-1995. A semi-exclusive reconstruction of B->l nu D(*) decays is performed, by combining lepton candidates with fully reconstructed D(*) mesons while the neutrino energy is estimated from the missing energy of the event. The mean value of xewd, the energy of the weakly-decaying B meson normalised to the beam energy, is found to be mxewd = 0.716 +- 0.006 (stat) +- 0.006 (syst) using a model-independent method; the corresponding value for the energy of the leading B meson is mxel = 0.736 +- 0.006 (stat) +- 0.006 (syst). The reconstructed spectra are compared with different fragmentation models.
21 pages, 5 figures
Databáze: OpenAIRE
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