UPDATE OF ELECTROWEAK PARAMETERS FROM Z DECAYS

Authors
BUSKULIC D DECAMP D GOY C LEES JP MINARD MN MOURS B PIETRZYK B ALEMANY R ARIZTIZABAL F COMAS P CRESPO JM DELFINO M 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 MAGGI M NATALI S NUZZO S QUATTROMINI M 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 I ZHANG L ZHAO W BAUERDICK LAT BLUCHER E BONVICINI G BOUDREAU J CASPER D DREVERMANN H FORTY RW GANIS G GAY C HAGELBERG R HARVEY J HAYWOOD S HILGART J JACOBSEN R JOST B KNOBLOCH J LEHRAUS I LOHSE T LUSIANI A MARTINEZ M MATO P MEINHARD H MINTEN A MIOTTO A MIQUEL R MOSER HG PALAZZI P PERLAS JA PUSZTASZERI JF RANJARD F REDLINGER G ROLANDI L ROTHBERG J RUAN T SAICH M SCHLATTER D SCHMELLING M SEFKOW F TEJESSY W WACHSMUTH H 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 JD HANSEN JR HANSEN PH MOLLERUD R NILSSON BS EFTHYMIOPOULOS I KYRIAKIS A SIMOPOULOU E VAYAKI A ZACHARIADOU K BADIER J BLONDEL A BONNEAUD G BRIENT JC FOUQUE G ORTEU S ROUGE A RUMPF M TANAKA R VERDERI M VIDEAU H CANDLIN DJ PARSONS MI VEITCH E MONETA L PARRINI G CORDEN M GEORGIOPOULOS C IKEDA M LANNUTTI J LEVINTHAL D MERMIKIDES M SAWYER L WASSERBAECH S 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 BELK AT BEUSELINCK R BINNIE DM CAMERON W CATTANEO M COLLING DJ DORNAN PJ DUGEAY S GREENE AM HASSARD JF LIESKE NM NASH J PAYNE DG PHILLIPS MJ SEDGBEER JK TOMALIN IR WRIGHT AG GIRTLER P KNERINGER E KUHN D RUDOLPH G 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 STEEG F WALTHER SM WANKE R WOLF B ADLUNG S ASSMANN R BAUER C BLUM W BROWN D CATTANEO P DEHNING B DIETL H DYDAK F FRANK M HALLEY AW LAUBER J LUTJENS G LUTZ G MANNER W RICHTER R ROTSCHEIDT H SCHRODER J SCHWARZ AS SETTLES R SEYWERD H STIERLIN U STIEGLER U STDENIS R WOLF G 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 BOSISIO L BOTTIGLI U BOZZI C CALDERINI G CARPINELLI M CIOCCI MA DELLORSO R FERRANTE I FIDECARO F FOA L FOCARDI E FORTI F GIASSI A GIORGI MA GREGORIO A LIGABUE F MANNELLI EB MARROCHESI PS MESSINEO A PALLA F RIZZO G SANGUINETTI G SPAGNOLO P STEINBERGER J TENCHINI R TONELLI G GRIGGIANI G VANNINI C VENTURI A VERDINI PG WALSH J BETTERIDGE AP CARTER JM GREEN MG MARCH PV MIR LM MEDCALF T QUAZI IS STRONG JA WEST LR AUBERT JJ 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 BOTTERILL DR CLIFT RW EDGECOCK TR EDWARDS M FISHER SM JONES TJ NORTON PR SALMON DP THOMPSON JC BLOCHDEVAUX B COLAS P DUARTE H KOZANECKI W LANCON E LEMAIRE MC LOCCI E PEREZ P PERRIER F 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 CARNEY RE CARTWRIGHT S COMBLEY F HATFIED F THOMPSON LF BARBERIO E BOHRER A BRANDT S COWAN G GRUPEN C LUTTERS G RIVERA F SCHAFER U SMOLIK L DELLAMARINA R GIANNINI G GOBBO B RAGUSA F BELLANTONI L CHEN W CINABRO D CONWAY JS COWEN DF FENG Z FERGUSON DPS GAO YS GRAHL J HARTON JL JARED RC LECLAIRE BW LISHKA C PAN YB PATER JR SAADI Y SHARMA V SCHMITT M SHI ZH WALSH AM WEBER FV WU SL WU X ZHENG M ZOBERNIG G
Citation
D. Buskulic et al., UPDATE OF ELECTROWEAK PARAMETERS FROM Z DECAYS, Zeitschrift fur Physik. C, Particles and fields, 60(1), 1993, pp. 71-81
Citations number
48
Categorie Soggetti
Physics, Particles & Fields
Journal title
Zeitschrift fur Physik. C, Particles and fields → ACNP
ISSN journal
01709739
Volume
60
Issue
1
Year of publication
1993
Pages
71 - 81
Database
ISI
SICI code
0170-9739(1993)60:1<71:UOEPFZ>2.0.ZU;2-4
Abstract
Based on 520000 fermion pairs accumulated during the first three years of data collection by the ALEPH detector at LEP, updated values of th e resonance parameters of the Z are determined to be M(Z) = (91.187 +/ - 0.009) GeV, GAMMA(Z) = (2.501 +/- 0.012) GeV, sigma(had)0 = (41.60 /- 0.27) nb, and R(l) = 20.78 +/- 0.13. The corresponding number of li ght neutrino species is N(v) = 2.97 +/- 0.05. The forward-backward asy mmetry in lepton-pair decays is used to determine the ratio of vector to axial-vector couplings of leptons: g(V)2(M(z)2)/g(A)2 (M(Z)2) = 0.0 052 +/- 0.00 1 6. Combining this with ALEPH measurements of the b and c quark asymmetries and tau polarization gives sin2theta(W)eff = 0.232 6 +/- 0.0013. Assuming the minimal Standard Model, and including measu rements of M(W)/M(Z) from ppBAR colliders and neutrino-nucleon scatter ing, the mass of the top quark is M(top)=156 +/-22/25 +/-17/22 Higgs G eV.