Updated measurement of the average b hadron lifetime

6533b85ffe1ef96bd12c1108

RESEARCH PRODUCT

Updated measurement of the average b hadron lifetime

Damir Buskulic D Décamp C Goy J P Lees M N Minard B Mours R Alemany F Ariztizabal P Comas-illas J M Crespo M C Delfino E Fernández V Gaitan L Garrido A Pacheco A Pascual D Creanza M De Palma A Farilla Giuseppe Iaselli G Maggi M Maggi S Natali S Nuzzo M Quattromini A Ranieri G Raso F Romano F Ruggieri G Selvaggi L Silvestris P Tempesta G Zito H Hu D Huang X Huang J Lin J Lou C Qiao T Wang Y Xie D Xu R Xu J Zhang W Zhao W B Atwood L A T Bauerdick E Blucher G Bonvicini F Bossi J Boudreau T H Burnett H Drevermann Roger W Forty R Hagelberg J Harvey S Haywood J M Hilgart R Jacobsen B Jost J Knobloch E Lançon Ivan Lehraus T Lohse A Lusiani M Martínez P Mato T S Mattison H Meinhard S R Menary T Meyer Adolf G Minten R Miquel H G Moser P Palazzi J A Perlas J F Pusztaszeri F Ranjard G Redlinger Luigi Rolandi A E Roth J E Rothberg T Ruan M Saich W D Schlatter M Schmelling F Sefkow W Tejessy H W Wachsmuth W Wiedenmann T Wildish W Witzeling J Wotschack Ziad J Ajaltouni F Badaud Maria Bardadin-otwinowska A M Bencheikh R El-fellous A Falvard P Gay C Guicheney P Henrard J Jousset B Michel J C Montret D Pallin P Perret B Pietrzyk J Proriol F Prulhière G Stimpfl Tom Fearnley J D Hansen J R Hansen P H Hansen R Møllerud B S Nilsson I Efthymiopoulos A Kyriakis Errietta Simopoulou Anna Vayaki K Zachariadou J Badier A Blondel G R Bonneaud J C Brient G Fouque S Orteu A Rosowsky A Rougé M Rumpf R Tanaka M Verderi H L Videau D J Candlin M I Parsons E Veitch L Moneta G Parrini M Corden C H Georgiopoulos M Ikeda J E Lannutti D A Levinthal Michael E Mermikides L Sawyer S R Wasserbaech A Antonelli R Baldini G Bencivenni G Bologna P Campana G Capon F Cerutti V Chiarella B D'ettorre-piazzoli G Felici P Laurelli G Mannocchi F Murtas G P Murtas L Passalacqua M Pepé-altarelli P Picchi B Altoon O Boyle P Colrain I Ten Have J G Lynch W J Maitland W T Morton C Raine J M Scarr K Smith A S Thompson R M Turnbull B Brandl O Braun R Geiges C Geweniger P Hanke V Hepp E E Kluge Y Maumary A Putzer B Rensch A Stahl K Tittel M Wunsch A T Belk R Beuselinck David M Binnie W Cameron M Cattaneo D J Colling Peter J Dornan S Dugeay A M Greene J F Hassard N M Lieske J Nash S J Patton D G Payne M J Phillips J K Sedgbeer I R Tomalin A G Wright E Kneringer D Kuhn G Rudolph C K Bowdery T J Brodbeck A J Finch F Foster G Hughes D Jackson N R Keemer M Nuttall A D Patel Terence Sloan S W Snow E P Whelan K Kleinknecht J Raab B Renk H G Sander H Schmidt F Steeg S M Walther B Wolf Jean-jacques Aubert C Benchouk V Bernard A Bonissent J Carr P Coyle J Drinkard F Etienne S Papalexiou P Payre Z Qian D Rousseau P Schwemling M Talby S Adlung C Bauer Walter Blum D Brown G D Cowan Bernd Dehning H Dietl Friedrich Dydak M Fernández-bosman M Frank A W Halley J Lauber G Lütjens Gerhard Lutz W Männer R H Richter Herbert Rotscheidt J Schröder A S Schwarz Ronald Settles H C J Seywerd U Stierlin U Stiegler R Saint-denis M Takashima J Thomas G Wolf V Bertin J Boucrot O Callot X Chen A Cordier M Davier J F Grivaz P Heusse P Janot D W Kim F R Le Diberder J Lefrançois A M Lutz M H Schune J J Veillet I Videau Z Zhang F Zomer D Abbaneo S R Amendolia G Bagliesi G Batignani L Bosisio U Bottigli C Bradaschia M Carpinelli M A Ciocci R Dell'orso I Ferrante F Fidecaro L Foà E Focardi F Forti A Giassi M A Giorgi F Ligabue E B Mannelli P S Marrocchesi A Messineo Fabrizio Palla G Rizzo G Sanguinetti Jack Steinberger Roberto Tenchini G Tonelli G Triggiani C Vannini A Venturi P G Verdini J Walsh J M Carter M G Green P V March L M Mir T Medcalf I S Quazi J A Strong L R West David R Botterill R W Clifft T R Edgecock M Edwards S M Fisher T J Jones P R Norton D P Salmon J C Thompson B Bloch-devaux P Colas H Duarte Witold Kozanecki M C Lemaire E Locci Sotirios S Loucatos E Monnier P Pérez F Perrier J Rander J F Renardy A Roussarie J P Schuller J Schwindling D Si Mohand B Vallage R P Johnson A M Litke G Taylor J Wear John Gavin Ashman W Babbage C N Booth C M Buttar R E Carney S L Cartwright F Combley F Hatfield P Reeves L F Thompson E Barbiero A Böhrer S Brandt Claus Grupen L Mirabito F Rivera U Schäfer G Ganis G Giannini B Gobbo F Ragusa L Bellantoni W Chen D Cinabro J S Conway D F Cowen Z Feng D P S Ferguson Y S Gao J Grahl J L Harton R C Jared B W Leclaire C Lishka Pan Yi Bin J R Pater Y Saadi V Sharma M Schmitt Z H Shi A M Walsh F V Weber M H Whitney Wu Sau Lan X Wu G Zobernig

subject

Physics Nuclear and High Energy Physics Aleph Particle physics Electron–positron annihilation Detector Hadron High Energy Physics::Phenomenology Silicon vertex detector ALEPH detector Nuclear physics High Energy Physics::Experiment Impact parameter Particle Physics - Experiment Lepton

description

An improved measurement of the average lifetime of b hadrons has been performed with the ALEPH detector. From a sample of 260000 hadronic Z0 decays, recorded during the 1991 LEP run with the silicon vertex detector fully operational, a fit to the impact parameter distribution of lepton tracks coming from semileptonic decays yields an average b hadron lifetime of 1.49 +/- 0.03 +/- 0.06 ps.

year	journal	country	edition	language
1992-01-01

10.1016/0370-2693(92)90108-g http://hdl.handle.net/11589/938