MEASUREMENT OF THE B-HADRON LIFETIME WITH THE DIPOLE METHOD

Authors
BUSKULIC D DEBONIS I DECAMP D GHEZ P GOY C LEES JP MINARD MN PIETRZYK B ARIZTIZABAL F COMAS P CRESPO JM DELFINO M EFTHYMIOPOULOS I FERNANDEZ E FERNANDEZBOSMAN M GAITAN V GARRIDO L MATTISON T PACHECO A PADILLA C PASCUAL A CREANZA D DEPALMA M FARILLA A IASELLI G MAGGI G MARINELLI N NATALI S NUZZO S RANIERI A RASO G ROMANO F RUGGIERI F SELVAGGI G SILVESTRIS L TEMPESTA P ZITO G CHAI Y HU H HUANG D HUANG X LIN J WANG T XIE Y XU D XU R ZHANG J ZHANG L ZHAO W BONVICINI G BOUDREAU J CASPER D DREVERMANN H FORTY RW GANIS G GAY C HAGELBERG R HARVEY J HILGART J JACOBSEN R JOST B KNOBLOCH J LEHRAUS I MAGGI M MARKOU C MARTINEZ M MATO P MEINHARD H MINTEN A MIQUEL R MOSER HG PALAZZI P PATER JR PERLAS JA PUSZTASZERI JF RANJARD F ROLANDI L ROTHBERG J RUAN T SAICH M SCHLATTER D SCHMELLING M SEFKOW F TEJESSY W TOMALIN IR VEENHOF R WACHSMUTH H WASSERBAECH S WIEDENMANN W WILDISH T WITZELING W WOTSCHACK J AJALTOUNI Z BADAUD F BARDADINOTWINOWSKA M ELFELLOUS R FALVARD A GAY P GUICHENEY C HENRARD P JOUSSET J MICHEL B MONTRET JC PALLIN D PERRET P PODLYSKI F PRORIOL J PRULHIERE F SAADI F FEARNLEY T HANSEN JB HANSEN JD HANSEN JR HANSEN PH MOLLERUD R NILSSON BS KYRIAKIS A SIMOPOULOU E SIOTIS I VAYAKI A ZACHARIADOU K BADIER J BLONDEL A BONNEAUD G BRIENT JC BOURDON P FOUQUE G ORTEU S ROUGE A RUMPF M TANAKA R VERDERI M VIDEAU H CANDLIN DJ PARSONS MI VEITCH E FOCARDI E MONETA L PARRINI G CORDEN M GEORGIOPOULOS C IKEDA M LEVINTHAL D ANTONELLI A BALDINI R BENCIVENNI G BOLOGNA G BOSSI F CAMPANA P CAPON G CERUTTI F CHIARELLA V DETTORREPIAZZOLI B FELICI G LAURELLI P MANNOCCHI G MURTAS F MURTAS GP PASSALACQUA L PEPEALTARELLI M PICCHI P COLRAIN P TENHAVE I LYNCH JG MAITLAND W MORTON WT RAINE C REEVES P SCARR JM SMITH K SMITH MG THOMPSON AS TURNBULL RM BRANDL B BRAUN O GEWENIGER C HANKE P HEPP V KLUGE EE MAUMARY Y PUTZER A RENSCH B STAHL A TITTEL K WUNSCH M BEUSELINCK R BINNIE DM CAMERON W CATTANEO M COLLING DJ DORNAN PJ GREENE AM HASSARD JF LIESKE NM MOUTOUSSI A NASH J PATTON S PAYNE DG PHILLIPS MJ SANMARTIN G SEDGBEER JK WRIGHT AG GIRTLER P KUHN D RUDOLPH G VOGL R BOWDERY CK BRODBECK TJ FINCH AJ FOSTER F HUGHES G JACKSON D KEEMER NR NUTTALL M PATEL A SLOAN T SNOW SW WHELAN EP KLEINKNECHT K RAAB J RENK B SANDER HG SCHMIDT H WALTHER SM WANKE R WOLF B ZIMMERMANN A BENCHEIKH AM BENCHOUK C BONISSENT A CARR J COYLE P DRINKARD J ETIENNE F NICOD D PAPALEXIOU S PAYRE P ROOS L ROUSSEAU D SCHWEMLING P TALBY M ADLUNG S ASSMANN R BAUER C BLUM W BROWN D CATTANEO P DEHNING B DIETL H DYDAK F FRANK M HALLEY AW JAKOBS K LAUBER J LUTJENS G LUTZ G MANNER W RICHTER R SCHRODER J SCHWARZ AS SETTLES R SEYWERD H STIERLIN U STIEGLER U STDENIS R WOLF G ALEMANY R BOUCROT J CALLOT O CORDIER A DAVIER M DUFLOT L GRIVAZ JF HEUSSE P JAFFE DE JANOT P KIM DW LEDIBERDER F LEFRANCOIS J LUTZ AM SCHUNE MH VEILLET JJ VIDEAU I ZHANG Z ABBANEO D BAGLIESI G BATIGNANI G BOTTIGLI U BOZZI C CALDERINI G CARPINELLI M CIOCCI MA CIULLI V DELLORSO R FERRANTE I FIDECARO F FOA L FORTI F GIASSI A GIORGI MA GREGORIO A LIGABUE F LUSIANI A MANNELLI EB MARROCCHESI PS MESSINEO A PALLA F RIZZO G SANGUINETTI G SPAGNOLO P STEINBERGER J TENCHINI R TONELLI G TRIGGIANI G VALASSI A VANNINI C VENTURI A VERDINI PG WALSH J BETTERIDGE AP GAO Y GREEN MG MARCH PV MIR LM MEDCALF T QUAZI IS STRONG JA WEST LR BOTTERILL DR CLIFFT RW EDGECOCK TR HAYWOOD S 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 VALLAGE B JOHNSON RP LITKE AM TAYLOR G WEAR J ASHMAN JG BABBAGE W BOOTH CN BUTTAR C CARTWRIGHT S COMBLEY F DAWSON I THOMPSON LF BARBERIO E BOHRER A BRANDT S COWAN G GRUPEN C LUTTERS G RIVERA F SCHAFER U SMOLIK L BOSISIO L DELLAMARINA R GIANNINI G GOBBO B RAGUSA F BELLANTONI L CHEN W CONWAY JS FENG Z FERGUSON DPS GAO YS GRAHL J HARTON JL HAYES OJ NACHTMAN JM PAN YB SAADI Y SCHMITT M SCOTT I SHARMA V SHI ZH TURK JD WALSH AM WEBER FV WU SL WU X ZHENG M ZOBERNIG G
Citation
D. Buskulic et al., MEASUREMENT OF THE B-HADRON LIFETIME WITH THE DIPOLE METHOD, Physics letters. Section B, 314(3-4), 1993, pp. 459-470
Citations number
39
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
314
Issue
3-4
Year of publication
1993
Pages
459 - 470
Database
ISI
SICI code
0370-2693(1993)314:3-4<459:MOTBLW>2.0.ZU;2-I
Abstract
A measurement of the average lifetime of b hadrons has been performed with the dipole method on a sample of 260000 hadronic Z decays recorde d with the ALEPH detector during 1991. The dipole is the distance betw een the vertices built in the opposite hemispheres. The mean dipole is extracted from all the events without attempting b enrichment. Compar ing the average of the data dipole distribution with a Monte Carlo cal ibration curve obtained with different b lifetimes, an average b hadro n lifetime of 1.51 +/- 0.08 ps is extracted.