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Titolo:
HEAVY FLAVOR PRODUCTION AND DECAY WITH PROMPT LEPTONS IN THE ALEPH DETECTOR
Autore:
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;
Indirizzi:
CNRS,IN2P3,PHYS PARTICULES LAB F-74019 ANNECY LE VIEUX FRANCE UNIV AUTONOMA BARCELONA,INST FIS ALTES ENERGIES E-08193 BARCELONA SPAIN INFN,DIPARTIMENTO FIS I-70126 BARI ITALY CHINESE ACAD SCI,INST HIGH ENERGY PHYS BEIJING PEOPLES R CHINA CERN,EUROPEAN LAB PARTICLE PHYS CH-1211 GENEVA 23 SWITZERLAND UNIV CLERMONT FERRAND,CNRS,IN2P3,PHYS CORPUSCULAIRE LAB F-63177 CLERMONT FERRAND FRANCE NIELS BOHR INST DK-2100 COPENHAGEN DENMARK DEMOCRITOS NUCL RES CTR ATHENS GREECE ECOLE POLYTECH,CNRS,IN2P3,PHYS NUCL & HAUTES ENERGIES LAB F-91128 PALAISEAU FRANCE UNIV EDINBURGH,DEPT PHYS EDINBURGH EH9 3JZ MIDLOTHIAN SCOTLAND UNIV FIRENZE,DIPARTIMENTO FIS I-50125 FLORENCE ITALY FLORIDA STATE UNIV,SUPERCOMP COMPUTAT RES INST TALLAHASSEE FL 32306 INFN,LAB NAZL I-00044 FRASCATI ITALY UNIV GLASGOW,DEPT PHYS & ASTRON GLASGOW G12 8QQ SCOTLAND UNIV HEIDELBERG,INST HOCHENERGIEPHYS D-69120 HEIDELBERG GERMANY UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED,DEPT PHYS LONDON SW7 2BZ ENGLAND INNSBRUCK UNIV,INST EXPTL PHYS A-6020 INNSBRUCK AUSTRIA UNIV LANCASTER,DEPT PHYS LANCASTER LA1 4YB ENGLAND UNIV MAINZ,INST PHYS D-55099 MAINZ GERMANY FAC SCI LUMINY,CNRS,IN2P3,CTR PHYS PARTICULES F-13288 MARSEILLE FRANCE MAX PLANCK INST PHYS & ASTROPHYS,WERNER HEISENBERG INST D-80805 MUNICH GERMANY UNIV PARIS 11,CNRS,IN2P3,ACCELERATEUR LINEAIRE LAB F-91405 ORSAY FRANCE UNIV PISA,INFN,DIPARTIMENTO FIS I-56100 PISA ITALY SCULO NORMALE SUPER I-56010 PISA ITALY UNIV LONDON,ROYAL HOLLOWAY & BEDFORD NEW COLL,DEPT PHYS EGHAM TW20 OEX SURREY ENGLAND RUTHERFORD APPLETON LAB,DEPT PARTICLE PHYS DIDCOT OX11 0QX OXON ENGLAND CE SACLAY,DAPNIA,SERV PHYS PARTICULES F-91191 GIF SUR YVETTE FRANCE UNIV CALIF SANTA CRUZ,INST PARTICLE PHYS SANTA CRUZ CA 95064 UNIV SHEFFIELD,DEPT PHYS SHEFFIELD S3 7RH S YORKSHIRE ENGLAND UNIV SIEGEN,FACHBEREICH PHYS D-57068 SIEGEN GERMANY UNIV TRIESTE,COLL FIS I-34127 TRIESTE ITALY INFN I-34127 TRIESTE ITALY UNIV WISCONSIN,DEPT PHYS MADISON WI 53706 UNIV WASHINGTON SEATTLE WA 98195 UNIV TURIN,IST FIS GEN I-10124 TURIN ITALY CNR,IST COSMOGEOFIS TURIN ITALY KANGNUNG NATL UNIV KANGNUNG SOUTH KOREA CERN,DIV PPE CH-1211 GENEVA 23 SWITZERLAND UNIV SASSARI,IST MATEMAT & FIS I-07100 SASSARI ITALY UNIV BARCELONA,DEPT ESTRUCT & CONSTITUENS MAT E-08208 BARCELONA SPAIN
Titolo Testata:
Zeitschrift fur Physik. C, Particles and fields
fascicolo: 2, volume: 62, anno: 1994,
pagine: 179 - 198
SICI:
0170-9739(1994)62:2<179:HFPADW>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
FORWARD-BACKWARD ASYMMETRY; HADRONIC Z(0) DECAYS; B-MESON DECAYS; RADIATIVE-CORRECTIONS; SEMILEPTONIC DECAYS; E+E ANNIHILATION; BRANCHING RATIO; QUARK-MODEL; GAMMA(Z(0)->B(B)OVER-BAR)/GAMMA(Z(0)->HADRONS); ENERGIES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
63
Recensione:
Indirizzi per estratti:
Citazione:
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

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 leptons have been analysed to give information on the production and decay of heavy quarks. The fractions of bbBAR and ccBAR events are measured to be 0.219+/-0.006+/-0.005 and 0.165+/-0.005+/-0.020, and the corresponding forward-backward asymmetries at the Z mass are measured to be 0.090+/-0.013+/-0.003 and 0.111+/-0.021+/-0.018, after QED and QCD corrections. 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 measurementof 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 parameters required to describe heavy quark fragmentation. From the asymmetry measurements, the effective electroweak mixing angle is sin2 theta(W)eff=0.2333+/-0.0022.

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Documento generato il 30/11/20 alle ore 09:59:49