Measurement of the b hadron lifetime with the dipole method

6533b855fe1ef96bd12b0ac8

RESEARCH PRODUCT

Measurement of the b hadron lifetime with the dipole method

Damir Buskulic I De Bonis D Décamp P Ghez C Goy J P Lees M N Minard B Pietrzyk F Ariztizabal P Comas J M Crespo M C Delfino I Efthymiopoulos E Fernández M Fernández-bosman V Gaitan L Garrido T S Mattison A Pacheco C Padilla A Pascual D Creanza M De Palma A Farilla Giuseppe Iaselli G Maggi S Natali S Nuzzo M Quattromini A Ranieri G Raso F Romano F Ruggieri G Selvaggi L Silvestris P Tempesta G Zito Y Chai H Hu D Huang X Huang J Lin T Wang Y Xie D Xu R Xu J Zhang L Zhang W Zhao E Blucher G Bonvicini J Boudreau David William Casper H Drevermann Roger W Forty G Ganis C Gay R Hagelberg J Harvey J M Hilgart R Jacobsen B Jost J Knobloch Ivan Lehraus T Lohse M Maggi C Markou M Martínez P Mato H Meinhard Adolf G Minten A Miotto R Miquel H G Moser P Palazzi J R Pater J A Perlas J F Pusztaszeri F Ranjard G Redlinger Luigi Rolandi J E Rothberg T Ruan M Saich W D Schlatter M Schmelling F Sefkow W Tejessy I R Tomalin R Veenhof H W Wachsmuth S R Wasserbaech W Wiedenmann T Wildish W Witzeling J Wotschack Ziad J Ajaltouni F Badaud Maria Bardadin-otwinowska R El-fellous A Falvard P Gay C Guicheney P Henrard J Jousset B Michel J C Montret D Pallin P Perret F Podlyski J Proriol F Prulhière F Saadi Tom Fearnley J B Hansen J D Hansen J R Hansen P H Hansen R Møllerud B S Nilsson A Kyriakis Errietta Simopoulou I Siotis Anna Vayaki K Zachariadou J Badier A Blondel G R Bonneaud J C Brient G Fouque S Orteu A Rougé M Rumpf R Tanaka M Verderi H L Videau D J Candlin M I Parsons E Veitch E Focardi L Moneta G Parrini M Corden C H Georgiopoulos M Ikeda D A Levinthal A Antonelli R Baldini G Bencivenni G Bologna F Bossi 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 P Colrain I Ten Have J G Lynch W J Maitland W T Morton C Raine P Reeves J M Scarr K Smith M G Smith A S Thompson R M Turnbull B Brandl O Braun C Geweniger P Hanke V Hepp E E Kluge Y Maumary A Putzer B Rensch A Stahl K Tittel M Wunsch R Beuselinck David M Binnie W Cameron M Cattaneo D J Colling Peter J Dornan A M Greene J F Hassard N M Lieske A Moutoussi J Nash S Patton D G Payne M J Phillips G San Martin J K Sedgbeer A G Wright P Girtler D Kuhn G Rudolph R K Vogl 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 R Wanke B Wolf A M Bencheikh C Benchouk A Bonissent J Carr P Coyle J Drinkard F Etienne D Nicod S Papalexiou P Payre L Roos D Rousseau P Schwemling M Talby S Adlung R W Assmann C Bauer Walter Blum D Brown Paolo Walter Cattaneo Bernd Dehning H Dietl Friedrich Dydak M Frank A W Halley K Jakobs J Lauber G Lütjens Gerhard Lutz W Männer R H Richter J Schröder A S Schwarz Ronald Settles H C J Seywerd U Stierlin U Stiegler R Saint-denis G Wolf R Alemany J Boucrot O Callot A Cordier M Davier L Duflot J F Grivaz P Heusse D E Jaffe P Janot D W Kim F R Le Diberder J Lefrançois A M Lutz M H Schune J J Veillet I Videau Z Zhang D Abbaneo G Bagliesi G Batignani U Bottigli C Bozzi G Calderini M Carpinelli M A Ciocci R Dell'orso I Ferrante F Fidecaro L Foà F Forti A Giassi M A Giorgi A Gregorio F Ligabue A Lusiani E B Mannelli P S Marrocchesi A Messineo Fabrizio Palla G Rizzo G Sanguinetti P Spagnolo Jack Steinberger Roberto Tenchini G Tonelli G Triggiani C Vannini A Venturi P G Verdini J Walsh A P Betteridge Y Gao 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 S Haywood P R Norton J C Thompson B Bloch-devaux P Colas H Duarte S Emery Witold Kozanecki E Lançon M C Lemaire E Locci B Marx P Pérez J Rander J F Renardy A Rosowsky 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 S L Cartwright F Combley I Dawson L F Thompson E Barbiero A Böhrer S Brandt G D Cowan Claus Grupen G Lutters F Rivera U Schäfer L Smolik L Bosisio R Della Marina G Giannini B Gobbo F Ragusa L Bellantoni W Chen J S Conway Z Feng D P S Ferguson Y S Gao J Grahl J L Harton O J Hayes J M Nachtman Pan Yi Bin Y Saadi M Schmitt I Scott V Sharma Z H Shi J Turk A M Walsh F V Weber Wu Sau Lan X Wu M Zheng G Zobernig

subject

Nuclear and High Energy Physics [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex]Calibration curve Electron–positron annihilation Monte Carlo method Hadron Elementary particle Discrete dipole approximation 01 natural sciences information Nuclear physics ALEPH Experiment 0103 physical sciences [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]mutualisation.010306 general physics ALEPH experiment Physics 010308 nuclear & particles physics Physics mediology territory Dipole High Energy Physics::Experiment territorial intelligence Particle Physics - Experiment

description

A measurement of the average lifetime of b hadrons has been performed with the dipole method on a sample of 260000 hadronic Z decays recorded with the ALEPH detector during 1991. The dipole is the distance between the vertices built in the opposite hemispheres. The mean dipole is extracted from all the events without attempting b enrichment. Comparing the average of the data dipole distribution with a Monte Carlo calibration curve obtained with different b lifetimes, an average b hadron lifetime of 1.51 +/- 0.08 ps is extracted. RI 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; St.Denis, Richard/C-8997-2012; Forti, Francesco/H-3035-2011; Ferrante, Isidoro/F-1017-2012

year	journal	country	edition	language
1993-01-01

10.1016/0370-2693(93)91265-o https://hdl.handle.net/11368/2563430