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

6533b7d1fe1ef96bd125d72f

RESEARCH PRODUCT

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

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 A. Trabelsi 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 Luigi Rolandi Franco Ligabue

subject

Quark Nuclear and High Energy Physics Particle physics Meson Electron–positron annihilation Nuclear Theory Hadron FOS: Physical sciences 7. Clean energy 01 natural sciences High Energy Physics - Experiment Nuclear physics High Energy Physics - Experiment (hep-ex)0103 physical sciences [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]B meson Nuclear Experiment 010306 general physics ALEPH experiment Physics Missing energy 010308 nuclear & particles physics High Energy Physics::Phenomenology High Energy Physics::Experiment Particle Physics - Experiment Lepton

description

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.

year	journal	country	edition	language
2001-06-13	Physics Letters B

https://doi.org/10.1016/s0370-2693(01)00690-6