Measurement of the Bs0 lifetime and production rate with Ds−ℓ+ combinations in Z decays

6533b82efe1ef96bd1293c5f

RESEARCH PRODUCT

Measurement of the Bs0 lifetime and production rate with Ds−ℓ+ combinations in Z decays

D Buskulic D Casper I De Bonis D Decamp P Ghez C Goy J.-p Lees A Lucotte M.-n Minard P Odier B Pietrzyk F Ariztizabal M Chmeissani J.m Crespo I Efthymiopoulos E Fernandez M Fernandez-bosman V Gaitan Ll Garrido M Martinez S Orteu A Pacheco C Padilla F Palla A Pascual J.a Perlas F Sanchez F Teubert A Colaleo D Creanza M De Palma A Farilla G Gelao M Girone G Iaselli G Maggi M Maggi N Marinelli S Natali S Nuzzo A Ranieri G Raso F Romano F Ruggieri G Selvaggi L Silvestris P Tempesta G Zito X Huang J Lin Q Ouyang T Wang Y Xie R Xu S Xue J Zhang L Zhang W Zhao G Bonvicini M Cattaneo P Comas P Coyle H Drevermann A Engelhardt R.w Forty M Frank R Hagelberg J Harvey R Jacobsen P Janot B Jost J Knobloch I Lehraus C Markou E.b Martin P Mato H Meinhard A Minten R Miquel T Oest P Palazzi J.r Pater J.-f Pusztaszeri F Ranjard P Rensing L Rolandi D Schlatter M Schmelling O Schneider W Tejessy I.r Tomalin A Venturi H Wachsmuth W Wiedenmann T Wildish W Witzeling J Wotschack Z Ajaltouni M Bardadin-otwinowska A Barres C Boyer A Falvard P Gay C Guicheney P Henrard J Jousset B Michel S Monteil J-c Montret D Pallin P Perret F Podlyski J Proriol J.-m Rossignol F Saadi T Fearnley J.b Hansen J.d Hansen J.r Hansen P.h Hansen B.s Nilsson A Kyriakis E Simopoulou I Siotis A Vayaki K Zachariadou A Blondel G Bonneaud J.c Brient P Bourdon L Passalacqua A Rougé M Rumpf R Tanaka A Valassi M Verderi H Videau D.j Candlin M.i Parsons E Focardi G Parrini M Corden M Delfino C Georgiopoulos D.e Jaffe A Antonelli G Bencivenni G Bologna F Bossi P Campana G Capon V Chiarella G Felici P Laurelli G Mannocchi F Murtas G.p Murtas M Pepe-altarelli S.j Dorris A.w Halley I Ten Have I.g Knowles J.g Lynch W.t Morton V O'shea C Raine P Reeves J.m Scarr K Smith M.g Smith A.s Thompson F Thomson S Thorn R.m Turnbull U Becker O Braun C Geweniger G Graefe P Hanke V Hepp E.e Kluge A Putzer B Rensch M Schmidt J Sommer H Stenzel K Tittel S Werner M Wunsch R Beuselinck D.m Binnie W Cameron D.j Colling P.j Dornan N Konstantinidis L Moneta A Moutoussi J Nash G San Martin J.k Sedgbeer A.m Stacey G Dissertori P Girler E Kneringer D Kuhn G Rudolph C.k Bowdery T.j Brodbeck P Colrain G Crawford A.j Finch F Foster G Hughes T Sloan E.p Whelan M.i Williams A Galla A.m Greene K Kleinknecht G Quast J Raab B Renk H.-g Sander R Wanke P Van Gemmeren C Zeitnitz J.j Aubert A.m Bencheikh C Benchouk A Bonissent G Bujosa D Calvet J Carr C Diaconu F Etienne M Thulasidas D Nicod P Payre D Rousseau M Talby I Abt R Assmann C Bauer W Blum D Brown H Dietl F Dydak G Ganis C Gotzhein K Jakobs H Kroha G Lütjens G Lutz W Männer H.-g Moser R Richter A Rosado-schlosser S Schael R Settles H Seywerd U Stierlin R.st Denis G Wolf R Alemany J Boucrot O Callot A Cordier F Courault M Davier L Duflot J.-f Grivaz Ph Heusse M Jacquet D.w Kim F Le Diberder J Lefrançois A.-m Lutz G Musolino I Nikolic H.j Park I.c Park M.-h Schune S Simion J.-j Veillet I Videau D Abbaneo P Azzurri G Bagliesi G Batignani S Bettarini C Bozzi G Calderini M Carpinelli M.a Ciocci V Ciulli R Dell'orso R Fantechi I Ferrante L Foà F Forti A Giassi M.a Giorgi A Gregorio F Ligabue A Lusiani P.s Marrocchesi A Messineo G Rizzo G Sanguinetti A Sciabà P Spagnolo J Steinberger R Tenchini G Tonelli G Triggiani C Vannini P.g Verdini J Walsh A.p Betteridge G.a Blair L.m Bryant F Cerutti Y Gao M.g Green D.l Johnson T Medcalf Ll.m Mir P Perrodo J.a Strong V Bertin D.r Botterill R.w Clifft T.r Edgecock S Haywood M Edwards P Maley P.r Norton J.c Thompson B Bloch-devaux P Colas H Duarte S Emery W Kozanecki E Lançon M.c Lemaire E Locci B Marz P Perez J Rander J.-f Renardy A Rosowsky A Roussarie J.-p Schuller J Schwindling D Si Mohand A. Trabelsi B Vallage R.p Johnson H.y Kim A.m Litke M.a Mcneil G Taylor A Beddall C.n Booth R Boswell S Cartwright F Combley I Dawson A Koksal M Letho W.m Newton C Rankin L.f Thompson A Böhrer S Brandt G Cowan E Feigl C Grupen G Lutters J Minguet-rodriguez F Rivera P Saraiva L Smolik F Stephan M Apollonio L Bosisio R Della Marina G Giannini B Gobbo F Ragusa J Rothberg S Wasserbaech S.r Armstrong L Bellantoni P Elmer Z Feng D.p.s Ferguson Y.s Gao S González J Grahl J.l Harton O.j Hayes H Hu P.a Mcnamara J.m Nachtman W Orejudos Y.b Pan Y Saadi M Schmitt I.j Scott V Sharma J.d Turk A.m Walsh Sau Lan Wu X Wu J.m Yamartino M Zheng G Zobernig

subject

Physics Nuclear and High Energy Physics Particle physics Meson 010308 nuclear & particles physics Branching fraction Physics Electron–positron annihilation High Energy Physics::Phenomenology Hadron 01 natural sciences ALEPH Experiment Nuclear physics Yield (chemistry)0103 physical sciences [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]High Energy Physics::Experiment 010306 general physics ALEPH experiment Particle Physics - Experiment Lepton Production rate

description

Abstract The lifetime of the Bs0 meson is measured in approximately 3 million hadronic Z decays accumulated using the ALEPH detector at LEP from 1991 to 1994. Seven different Ds− decay modes were reconstructed and combined with an opposite sign lepton as evidence of semileptonic Bs0 decays. Two hundred and eight Ds−l+ candidates satisfy selection criteria designed to ensure precise proper time reconstruction and yield a measured Bs0 lifetime of τ(Bs0) = 1.59−0.15+0.17 (stat) ±0.03 (syst) ps. Using a larger, less constrained sample of events, the product branching ratio is measured to be Br ( b → B s 0 ) · Br(B s 0 → D s − l + νX) = 0.82 ± 0.09 (stat) −0.14+0.13 (syst) %.

year	journal	country	edition	language
1995-01-01	Physics Letters B

https://doi.org/10.1016/0370-2693(95)01173-n