Measurements of mean lifetime and branching fractions of b hadrons decaying to J/ψ

6533b7d3fe1ef96bd1261466

RESEARCH PRODUCT

Measurements of mean lifetime and branching fractions of b hadrons decaying to J/ψ

Buskulic D Decamp D Goy C Lees Jp Minard Mn Mours B Alemany R Ariztizabal F Comas P Crespo Jm Delfino M Fernandez E Gaitan V Garrido L Pacheco A Pascual A Creanza D Depalma M Farilla A Iaselli G Maggi G Maggi M Natali S Nuzzo S Quattromini M Ranieri A Raso G Romano F Ruggieri F Selvaggi G Silvestris L Tempesta P Zito G Hu H Huang D Huang X Lin J Lou J Qiao C Wang T Xie Y Xu D Xu R Zhang J Zhao W Atwood Wb Bauerdick Lat Blucher E Bonvicini G Bossi F Boudreau J Burnett Th Drevermann H Forty Rw Hagelberg R Harvey J Haywood S Hilgart J Jacobsen R Jost B Knobloch J Lancon E Lehraus I Lohse T Alberto Lusiani Martinez M Mato P Mattison T Meinhard H Menary S Meyer T Minten A Miquel R Moser Hg Palazzi P Perlas Ja Pusztaszeri Jf Ranjard F Redlinger G Roth A Rothberg J Ruan T Saich M Schlatter D Schmelling M Sefkow F Tejessy W Wachsmuth H Wiedenmann W Wildish T Witzeling W Wotschack J Ajaltouni Z Badaud F Bardadinotwinowska M Bencheikh Am Elfellous R Falvard A Gay P Guicheney C Henrard P Jousset J Michel B Montret Jc Pallin D Perret P Pietrzyk B Proriol J Prulhiere F Stimpfl G Fearnley T Hansen Jd Hansen Jr Hansen Ph Mollerud R Nilsson Bs Efthymiopoulos I Kyriakis A Simopoulou E Vayaki A Zachariadou K Badier J Blondel A Bonneaud G Brient Jc Fouque G Orteu S Rosowsky A Rouge A Rumpf M Tanaka R Verderi M Videau H Candlin Dj Parsons Mi Veitch E Moneta L Parrini G Corden M Georgiopoulos C Ikeda M Lannutti J Levinthal D Mermikides M Sawyer L Wasserbaech S Antonelli A Baldini R Bencivenni G Bologna G Campana P Capon G Cerutti F Chiarella V Dettorrepiazzoli B Felici G Laurelli P Mannocchi G Murtas F Murtas Gp Passalacqua L Pepealtarelli M Picchi P Altoon B Boyle O Colrain P Tenhave I Lynch Jg Maitland W Morton Wt Raine C Scarr Jm Smith K Thompson As Turnbull Rm Brandl B Braun O Geiges R Geweniger C Hanke P Hepp V Kluge Ee Maumary Y Putzer A Rensch B Stahl A Tittel K Wunsch M Belk At Beuselinck R Binnie Dm Cameron W Cattaneo M Colling Dj Dornan Pj Dugeay S Greene Am Hassard Jf Lieske Nm Nash J Patton Sj Payne Dg Phillips Mj Sedgbeer Jk Tomalin Ir Wright Ag Kneringer E Kuhn D Rudolph G Bowdery Ck Brodbeck Tj Finch Aj Foster F Hughes G Jackson D Keemer Nr Nuttall M Patel A Sloan T Snow Sw Whelan Ep Kleinknecht K Raab J Renk B Sander Hg Schmidt H Steeg F Walther Sm Wolf B Aubert Jj Benchouk C Bernard V Bonissent A Carr J Coyle P Drinkard J Etienne F Papalexiou S Payre P Qian Z Rousseau D Schwemling P Talby M Adlung S Bauer C Blum W Brown D Cowan G Dehning B Dietl H Dydak F Fernandezbosman M Frank M Halley Aw Lauber J Lutjens G Lutz G Manner W Richter R Rotscheidt H Schroder J Schwarz As Settles R Seywerd H Stierlin U Stiegler U Stdenis R Takashima M Thomas J Wolf G Bertin V Boucrot J Callot O Chen X Cordier A Davier M Grivaz Jf Heusse P Janot P Kim Dw Lediberder F Lefrancois J Lutz Am Schune Mh Veillet Jj Videau I Zhang Z Zomer F Abbaneo D Amendolia Sr Bagliesi G Batignani G Bosisio L Bottigli U Bradaschia C Carpinelli M Ciocci Ma Dellorso R Ferrante I Fidecaro F Foa L Focardi E Forti F Giassi A Giorgi Ma Mannelli Eb Marrocchesi Ps Messineo A Palla F Rizzo G Sanguinetti G Spagnolo P Steinberger J Tenchini R Tonelli G Triggiani G Vannini C Venturi A Verdini Pg Walsh J Carter Jm Green Mg March Pv Mir Lm Medcalf T Quazi Is Strong Ja West Lr Botterill Dr Clifft Rw Edgecock Tr Edwards M Fisher Sm Jones Tj Norton Pr Salmon Dp Thompson Jc Blochdevaux B Colas P Duarte H Kozanecki W Lemaire Mc Locci E Loucatos S Monnier E Perez P Perrier F Rander J Renardy Jf Roussarie A Schuller Jp Schwindling J Mohand Ds Vallage B Johnson Rp Litke Am Taylor G Wear J Ashman Jg Babbage W Booth Cn Buttar C Carney Re Cartwright S Combley F Hatfield F Reeves P Thompson Lf Barberio E Bohrer A Brandt S Grupen C Mirabito L Rivera F Schafer U Ganis G Giannini G Gobbo B Ragusa F Bellantoni L Chen W Cinabro D Conway Js Cowen Df Feng Z Ferguson Dps Gao Ys Grahl J Harton Jl Jared Rc Leclaire Bw Lishka C Pan Yb Pater Jr Saadi Y Sharma V Schmitt M Shi Zh Walsh Am Weber Fv Whitney Mh Wu Sl Wu X Zobernig G Ri Perrier Frederic/a 5953 2011 Antonelli Antonella/c 6238 2011 Buttar Craig/d 3706 2011 Stahl Achim/e 8846 2011 Passalacqua Luca/f 5127 2011 Murtas Fabrizio/b 5729 2012 S.t. Denis Richard/c 8997 2012 Forti Francesco/h 3035 2011 Ferrante Isidoro/f 1017 2012 Luigi Rolandi Franco Ligabue

subject

Physics Nuclear and High Energy Physics Particle physics Meson Branching fraction Electron–positron annihilation Hadron BOSON LEP Branching (polymer chemistry)Nuclear physics Mass spectrum High Energy Physics::Experiment Astrophysics::Earth and Planetary Astrophysics ANNIHILATION Particle Physics - Experiment

description

From a data sample of 450 000 hadronic events recorded with the ALEPH detector at LEP, 92 +/- 10 events are observed containing a J/psi meson decaying to mu+mu- or e+e-. From these data the measured inclusive branching fraction for a b flavoured hadron to decay to a J/psi is BR(b --> J/psiX) = (1.21 +/- 0.13 (stat.) +/- 0.08 (syst.))%, and the average b hadron lifetime in the events tagged with a J/psi is tau(b) = 1.35(-0.17)+0.19 +/- 0.05 ps. Five events are observed consistent with the exclusive decay B+/- --> J/psiK+/- and from these events the exclusive branching fraction is measured to be BR(B+/- --> J/psiK+/-) = (0.22 +/- 0.10 +/- 0.02)%. Upper limits for other exclusive branching ratios are given.

year	journal	country	edition	language
1992-01-01

10.1016/0370-2693(92)91581-s http://hdl.handle.net/10281/390430