A measurement of |Vcb| from

6533b7ddfe1ef96bd127482f

RESEARCH PRODUCT

A measurement of |Vcb| from

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 D.g Cassel 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 K Moffeit 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 Girtler 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 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 Marx 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 P Van Gemmeren 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 ALEPH Experiment Nuclear and High Energy Physics Particle physics Muon Meson Branching fraction Cabibbo–Kobayashi–Maskawa matrix Electron–positron annihilation Hadron Form factor (quantum field theory)ALEPH experiment

description

Abstract From approximately 3 million hadronic decays of Z bosons recorded with the aleph detector at lep , a sample of 410 ± 32 B 0 → D ∗+ l − ν l candidates is selected, where l is either an electron or a muon. The differential decay rate dΓ ( B 0 → D ∗+ l − ν l ) dω from this sample is fitted, yielding a value for the product of the CKM matrix element |Vcb| and the normalisation of the decay form factor at the point of zero recoil of the D∗+ meson F (ω = 1)|Vcb| = (31.4 ± 2.3stat ± 2.5syst) × 10−3. A value for |Vcb| is extracted using theoretical calculations of the form factor normalisation, with the result |Vcb| = (34.5 ± 2.5stat ± 2.7syst ± 1.5theory) × 10−3. From the integrated s the measured branching fraction is Br( B 0 → D ∗+ l − ν l ) = (5.18 ± 0.30 stat ± 0.62 syst ) %.

year	journal	country	edition	language
1995-10-01

10.1016/0370-2693(95)01021-h http://hdl.handle.net/11368/2563355