MEASUREMENT OF THE B-S(0) LIFETIME AND PRODUCTION-RATE WITH D-S(-)L(+) COMBINATIONS IN Z-DECAYS

Buskulic, D; Casper, D; Debonis, I; Decamp, D; Ghez, P; Goy, C; Lees, Jp; Lucotte, A; Minard, Mn; Odier, P; Pietrzyk, B; Ariztizabal, F; Chmeissani, M; Crespo, Jm; Efthymiopoulos, I; Fernandez, E; Fernandezbosman, M; Gaitan, V; Garrido, L; Martinez, M; Orteu, S; Pacheco, A; Padilla, C; Palla, F; Pascual, A; Perlas, Ja; Sanchez, F; Teubert, F; Colaleo, A; Creanza, D; Depalma, M; Farilla, A; Gelao, G; Girone, M; Iaselli, G; Maggi, G; Maggi, M; Marinelli, N; Natali, S; Nuzzo, S; Ranieri, A; Raso, G; Romano, F; Ruggieri, F; Selvaggi, G; Silvestris, L; Tempesta, P; Zito, G; Huang, X; Lin, J; Ouyang, Q; Wang, T; Xie, Y; Xu, R; Xue, S; Zhang, J; Zhang, L; Zhao, W; Bonvicini, G; Comas, Mcp; Coyle, P; Drevermann, H; Engelhardt, A; Forty, Rw; Frank, M; Hagelberg, R; Harvey, J; Jacobsen, R; Janot, P; Jost, B; Knobloch, J; Lehraus, I; Markou, C; Martin, Eb; Mato, P; Meinhard, H; Minten, A; Miquel, R; Oest, T; Palazzi, Top; Pater, Jr; Pusztaszeri, Jf; Ranjard, F; Rensing, P; Rolandi, Luigi; Schlatter, D; 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doi:10.1016/0370-2693(95)01173-N

The lifetime of the B-s(0) meson is measured in approximately 3 million hadronic Z decays accumulated using the ALEPH detector at LEP from 1991 to 1994. Seven different D-s(-) decay modes were reconstructed and combined with an opposite sign lepton as evidence of semileptonic B-s(0) decays. Two hundred and eight D(s)(-)l(+) candidates satisfy selection criteria designed to ensure precise proper time reconstruction and yield a measured B-s(0) lifetime of tau(B-s(0)) = 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) over bar --> B-s(0)) . Br(B-s(0) --> D(s)(-)l(+)nu X) = 0.82 +/- 0.09 (stat)(-0.14)(+0.13) (syst) %.

Titolo:	MEASUREMENT OF THE B-S(0) LIFETIME AND PRODUCTION-RATE WITH D-S(-)L(+) COMBINATIONS IN Z-DECAYS
Autori:	BUSKULIC D CASPER D DEBONIS I DECAMP D GHEZ P GOY C LEES JP LUCOTTE A MINARD MN ODIER P PIETRZYK B ARIZTIZABAL F CHMEISSANI M CRESPO JM EFTHYMIOPOULOS I FERNANDEZ E FERNANDEZBOSMAN M GAITAN V GARRIDO L MARTINEZ M ORTEU S PACHECO A PADILLA C PALLA F PASCUAL A PERLAS JA SANCHEZ F TEUBERT F COLALEO A CREANZA D DEPALMA M FARILLA A GELAO G GIRONE M IASELLI G MAGGI G MAGGI M MARINELLI N NATALI S NUZZO S RANIERI A RASO G ROMANO F RUGGIERI F SELVAGGI G SILVESTRIS L TEMPESTA P ZITO G HUANG X LIN J OUYANG Q WANG T XIE Y XU R XUE S ZHANG J ZHANG L ZHAO W BONVICINI G COMAS MCP COYLE P DREVERMANN H ENGELHARDT A FORTY RW FRANK M HAGELBERG R HARVEY J JACOBSEN R JANOT P JOST B KNOBLOCH J LEHRAUS I MARKOU C MARTIN EB MATO P MEINHARD H MINTEN A MIQUEL R OEST T PALAZZI TOP PATER JR PUSZTASZERI JF RANJARD F RENSING P ROLANDI, LUIGI SCHLATTER D SCHMELLING M SCHNEIDER O TEJESSY W TOMALIN IR VENTURI A WACHSMUTH H WIEDENMANN W WILDISH T WITZELING W WOTSCHACK J AJALTOUNI Z BARDADINOTWINOWSKA M BARRES A BOYER C FALVARD A GAY P GUICHENEY C HENRARD P JOUSSET J MICHEL B MONTEIL S MONTRET JC PALLIN D PERRET P PODLYSKI F PRORIOL J ROSSIGNOL JM SAADI F FEARNLEY T HANSEN JB HANSEN JD HANSEN JR HANSEN PH NILSSON BS KYRIAKIS A SIMOPOULOU E SIOTIS I VAYAKI A ZACHARIADOU K BLONDEL A BONNEAUD G BRIENT JC BOURDON P PASSALACQUA L ROUGE A RUMPF M TANAKA R VALASSI A VERDERI M VIDEAU H CANDLIN DJ PARSONS MI FOCARDI E PARRINI G CORDEN M DELFINO M GEORGIOPOULOS C JAFFE DE ANTONELLI A BENCIVENNI G BOLOGNA G BOSSI F CAMPANA P CAPON G CHIARELLA V FELICI G LAURELLI P MANNOCCHI G MURTAS F MURTAS GP PEPEALTARELLI M DORRIS DJ HALLEY AW TENHAVE I KNOWLES IG LYNCH JG MORTON WT OSHEA V RAINE C REEVES P SCARR JM SMITH K SMITH MG THOMPSON AS THOMSON F THORN S TURNBULL RM BECKER U BRAUN O GEWENIGER C GRAEFE G HANKE P HEPP V KLUGE EE PUTZER A RENSCH B SCHMIDT M SOMMER J STENZEL H TITTEL K WERNER S WUNSCH M BEUSELINCK R BINNIE DM CAMERON W COLLING DJ DORNAN PJ KONSTANTINIDIS N MONETA L MOUTOUSSI A NASH J SANMARTIN G SEDGBEER JK STACEY AM DISSERTORI G GIRTLER P KNERINGER E KUHN D RUDOLPH G BOWDERY CK BRODBECK TJ COLRAIN P CRAWFORD G FINCH AJ FOSTER F HUGHES G SLOAN T WHELAN EP WILLIAMS MI GALLA A GREENE AM KLEINKNECHT K QUAST G RAAB J RENK B SANDER HG WANKE R VANGEMMEREN P ZEITNITZ C AUBERT JJ BENCHEIKH AM BENCHOUK C BONISSENT A BUJOSA G CALVET D CARR J DIACONU C ETIENNE F THULASIDAS M NICOD D PAYRE P ROUSSEAU D TALBY M ABT I ASSMANN R BAUER C BLUM W BROWN D DIETL H DYDAK F GANIS G GOTZHEIN C JAKOBS K KROHA H LUTJENS G LUTZ G MANNER W MOSER HG RICHTER R ROSADOSCHLOSSER A SCHAEL S SETTLES R SEYWERD H STIERLIN U STDENIS R WOLF G ALEMANY R BOUCROT J CALLOT O CORDIER A COURAULT F DAVIER M DUFLOT L GRIVAZ JF HEUSSE P JACQUET M KIM DW LEDIBERDER F LEFRANCOIS J LUTZ AM MUSOLINO G NIKOLIC I PARK HJ PARK IC SCHUNE MH SIMION S VEILLET JJ VIDEAU I ABBANEO D AZZURRI P BAGLIESI G BATIGNANI G BETTARINI S BOZZI C CALDERINI G CARPINELLI M CIOCCI MA CIULLI V DELLORSO R FANTECHI R FERRANTE I FOA L FORTI F GIASSI A GIORGI MA GREGORIO A LIGABUE, FRANCO LUSIANI, Alberto MARROCCHESI PS MESSINEO A RIZZO G SANGUINETTI G SCIABA A SPAGNOLO P STEINBERGER J TENCHINI R TONELLI G TRIGGIANI G VANNINI C VERDINI PG WALSH J BETTERIDGE AP BLAIR GA BRYANT LM CERUTTI F GAO Y GREEN MG JOHNSON DL MEDCALF T MIR LM PERRODO P STRONG JA BERTIN V BOTTERILL DR CLIFFT RW EDGECOCK TR HAYWOOD S EDWARDS M MALEY P NORTON PR THOMPSON JC BLOCHDEVAUX B COLAS P DUARTE H EMERY S KOZANECKI W LANCON E LEMAIRE MC LOCCI E MARX B PEREZ P RANDER J RENARDY JF ROSOWSKY A ROUSSARIE A SCHULLER JP SCHWINDLING J MOHAND DS TRABELSI A VALLAGE B JOHNSON RP KIM HY LITKE AM MCNEIL MA TAYLOR G BEDDALL A BOOTH CN BOSWELL R CARTWRIGHT S COMBLEY F DAWSON I KOKSAL A LETHO M NEWTON WM RANKIN C THOMPSON LF BOHRER A BRANDT S COWAN G FEIGL E GRUPEN C LUTTERS G MINGUETRODRIGUEZ J RIVERA F SARAIVA P SMOLIK L STEPHAN F APOLLONIO M BOSISIO L DELLAMARINA R GIANNINI G GOBBO B RAGUSA F ROTHBERG J WASSERBAECH S ARMSTRONG SR BELLANTONI L ELMER P FENG Z FERGUSON DPS GAO YS GONZALEZ S GRAHL J HARTON JL HAYES OJ HU H MCNAMARA PA NACHTMAN JM OREJUDOS W PAN YB SAADI Y SCHMITT M SCOTT IJ SHARMA V TURK JD WALSH AM WU SL WU X YAMARTINO JM ZHENG M ZOBERNIG G RI ANTONELLI ANTONELLA/C 6238 2011 Passalacqua Luca/F 5127 2011 Murtas Fabrizio/B 5729 2012 S.t. Denis Richard/C 8997 2012 Ferrante Isidoro/F 1017 2012 Sanchez Federico/F 5809 2012 mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	1995
Rivista:	PHYSICS LETTERS. SECTION B
Digital Object Identifier (DOI):	http://dx.doi.org/10.1016/0370-2693(95)01173-N
Appare nelle tipologie:	1.1 Articolo in rivista

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