HEAVY FLAVOR PRODUCTION AND DECAY WITH PROMPT LEPTONS IN THE ALEPH DETECTOR

Authors
BUSKULIC D CASPER D DEBONIS I DECAMP D GHEZ P GOY C LEES JP MINARD MN ODIER P PIETRZYK B ARIZTIZABAL F COMAS P CRESPO JM EFTHYMIOPOULOS I FERNANDEZ E FERNANDEZBOSMAN M GAITAN V GARRIDO L MARTINEZ M MATTISON T ORTREU S 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 HUANG D HUANG X LIN J WANG T XIE Y XU D XU R ZHANG J ZHANG L ZHAO W BONVICINI G BOUDREAU J DREVERMANN H FORTY RW GANIS G GAY C GIRONE M HAGELBERG R HARVEY J HILGART J JACOBSEN R JOST B KNOBLOCH J LEHRAUS I MAGGI M MARKOU C MATO P MEINHARD H MINTEN A MIQUEL R PALAZZI P PATER JR PERLAS JA PERRODO P 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 BARDADINOTWINOWSKA M BARRES A BOYER C FALVARD A GAY P GUICHENEY C HENRARD P JOUSSET J MICHEL B MONTRET JC PALLIN D PERRET P PODLYSKI F PRORIOL J SAADI F FEARNLEY T HANSEN JB HANSEN JD HANSEN JR HANSEN PH JOHNSON SD MOLLERUD R NILSSON BS KYRIAKIS A SIMOPOULOU E SIOTIS I VAYAKI A ZACHARIADOU K BADIER J BLONDEL A BONNEAUD G BRIENT JC BOURDON B FOUQUE G PASSALACQUA L ROUGE A RUMPF M TANAKA R VERDERI M VIDEAU H CANDLIN DJ PARSONS MI VEITCH E FOCARDI E MONETA L PARRINI G CORDEN M DELFINO M GEORGIOPOULOS C JAFFE DE LEVINTHAL D ANTONELLI A BENCIVENNI G BOLOGNA G BOSSI F CAMPANA P CAPON G CERUTTI F CHIARELLA V FELICI G LAURELLI P MANNOCCHI G MURTAS F MURTAS GP PEPEALTARELLI M SALOMONE S COLRAIN P TENHAVE I KNOWLES IG LYNCH JG MAITLAND W MORTON WT RAINE C REEVES P SCARR JM SMITH K SMITH MG THOMPSON AS THORN S TURNBULL RM BECKER U BRAUN O GEWENIGER C HANKE P HEPP V KLUGE EE PUTZER A RENSCH B SCHMIDT M STENZEL H TITTEL K WUNSCH M BEUSELINCK R BINNIE DM CAMERON W CATTANEO M COLLING DJ DORNAN PJ HASSARD JF KONSTANTINIDIS N MOUTOUSSI A NASH J PAYNE DG 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 GALLA A GREENE AM KLEINKNECHT K RAAB J RENK B SANDER HG SCHMIDT H WALTHER SM WANKE R WOLF B BENCHEIKH AM BENCHOUK C BONISSENT A CALVET D CARR J COYLE P DIACONU C ETIENNE F NICOD D 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 MOSER HG 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 JANOT P KIM DW LEDIBERDER F LEFRANCOIS J LUTZ AM MUSOLINO G SCHUNE MH VEILLET JJ VIDEAU I 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 MARROCCHESI PS MARTIN EB 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 JOHNSON DL MARCH PV MEDCALF T MIR LM QUAZI IS STRONG JA BERTIN V BOTTERILL DR CLIFFT RW EDGECOCK TR HAYWOOD S EDWARDS M 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 BABBAGE W BOOTH CN BUTTAR C CARTWRIGHT S COMBLEY F DAWSON I THOMPSON LF BOHRER A BRANDT S COWAN G FEIGL E GRUPEN C LUTTERS G MINGUETRODRIGUEZ J RIVERA F SARAIVA P SCHAFER U SMOLIK L BOSISIO L DELLAMARINA R GIANNINI G GOBBO B PITIS L RAGUSA F BELLANTONI L CHEN W CONWAY JS FENG Z FERGUSON DPS GAO YS GRAHL J HARTON JL HAYES OJ HU H NACHTMAN JM PAN YB SAADI Y SCHMITT M SCOTT I SHARMA V TURK JD WALSH AM WEBER FV WU SL WU X YAMARTINO JM ZHENG M ZOBERNIG G
Citation
D. Buskulic et al., HEAVY FLAVOR PRODUCTION AND DECAY WITH PROMPT LEPTONS IN THE ALEPH DETECTOR, Zeitschrift fur Physik. C, Particles and fields, 62(2), 1994, pp. 179-198
Citations number
63
Categorie Soggetti
Physics, Particles & Fields
Journal title
Zeitschrift fur Physik. C, Particles and fields → ACNP
ISSN journal
01709739
Volume
62
Issue
2
Year of publication
1994
Pages
179 - 198
Database
ISI
SICI code
0170-9739(1994)62:2<179:HFPADW>2.0.ZU;2-8
Abstract
In 431 000 hadronic Z decays recorded with the ALEPH detector at LEP, the yields of electrons and muons in events with one or more prompt le ptons have been analysed to give information on the production and dec ay of heavy quarks. The fractions of bbBAR and ccBAR events are measur ed to be 0.219+/-0.006+/-0.005 and 0.165+/-0.005+/-0.020, and the corr esponding forward-backward asymmetries at the Z mass are measured to b e 0.090+/-0.013+/-0.003 and 0.111+/-0.021+/-0.018, after QED and QCD c orrections. Measurements for the semileptonic branching ratios BR(b--> l-nuXBAR) and BR(b-->c-->l+nuX) yield 0.114+/-0.003+/-0.004 and 0.082/-0.003+/-0.012, respectively. The dilepton events enable measurement of the b mixing parameter, chi=0.114+/-0.014+/-0.008. Results are also presented for the energy variation of the bbBAR asymmetry and the par ameters required to describe heavy quark fragmentation. From the asymm etry measurements, the effective electroweak mixing angle is sin2 thet a(W)eff=0.2333+/-0.0022.