DETERMINATION OF A(FB)(B) USING JET CHARGE MEASUREMENTS IN Z-DECAYS

Authors
BARATE R BUSKULIC D DECAMP D GHEZ P COY C LEES JP LUCOTTE A MERLE E MINARD MN NIEF JY PIETRZYK B ALEMANY R BOIX G CASADO MP CHMEISSANI M CRESPO JM DELFINO M FERNANDEZ E FERNANDEZBOSMAN M GARRIDO L GRAUGES E JUSTE A MARTINEZ M MERINO G MIQUEL R MIR LM PARK IC PASCUAL A PERLAS JA RIU I SANCHEZ F COLALEO A CREANZA D DEPALMA M GELAO G IASELLI G MAGGI G MAGGI M NUZZO S RANIERI A TEMPESTA P TRICOMI A RASO G RUGGIERI F SELVAGGI G SILVESTRIS L ZITO G HUANG X LIN J OUYANG Q WANG T XIE Y XU R XUE S ZHANG J ZHANG L ZHAO W ABBANEO D BECKER U BRIGHTTHOMAS P CASPER D CATTANEO M CIULLI V DISSERTORI G DREVERMANN H FORTY RW FRANK M HAGELBERG R HANSEN JB HARVEY J JANOT P JOST B LEHRAUS I MATO P MINTEN A MONETA L PACHECO A PUSZTASZERI JF RANJARD F ROLANDI L ROUSSEAU D SCHLATTER D SCHMITT M SCHNEIDER O TEJESSY W TEUBERT F TOMALIN IR WACHSMUTH H AJALTOUNI Z BADAUD F CHAZELLE G DESCHAMPS O FALVARD A FERDI C GAY P GUICHENEY C HENRARD P JOUSSET J MICHEL B MONTEIL S MONTRET JC PALLIN D PERRET P PODLYSKI F PRORIOL J ROSNET P HANSEN JD HANSEN JR HANSEN PH NILSSON BS RENSCH B WAANANEN A DASKALAKIS G KYRIAKIS A MARKOU C SIMOPOULOU E SIOTIS I VAYAKI A BLONDEL A BONNEAUD G BRIENT JC BOURDON P ROUGE A RUMPF M VALASSI A VERDERI M VIDEAU H FOCARDI E PARRINI G ZACHARIADOU K CORDEN M GEORGIOPOULOS C JAFFE DE 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 PASSALACQUA L PEPEALTARELLI M CURTIS L HALLEY AW LYNCH JG NEGUS P OSHEA V RAINE C SCARR JM SMITH K TEIXEIRADIAS P THOMPSON AS THOMSON E BUCHMULLER O DHAMOTHARAN S GEWENIGER C GRAEFE G HANKE P HANSPER G HEPP V KLUGE EE PUTZER A SOMMER J TITTEL K WERNER S WUNSCH M BEUSELINCK R BINNIE DM CAMERON W DORNAN PJ GIRONE M GOODSIR S MARTIN EB MARINELLI N MOUTOUSSI A NASH J SEDGBEER JK SPAGNOLO P WILLIAMS MD GHETE VM GIRTLER P KNERINGER E KUHN D RUDOLPH G BETTERIDGE AP BOWDERY CK BUCK PG COLRAIN P CRAWFORD G FINCH AJ FOSTER F HUGHES G JONES RWL ROBERTSON NA WILLIAMS MI GIEHL I GREENE AM HOFFMANN C JAKOBS K KLEINKNECHT K QUAST G RENK B ROHNE E SANDER HG VANGEMMEREN P ZEITNITZ C AUBERT JJ BENCHOUK C BONISSENT A BUJOSA G CARR J COYLE P ETIENNE F LEROY O MOTSCH F PAYRE P TALBY M SADOUKI A THULASIDAS M TRABELSI K ALEPPO M ANTONELLI M RAGUSA F BERLICH R BLUM W BUSCHER V DIETL H GANIS G KROHA H LUTJENS G MANNERT C MANNER W MOSER HG SCHAEL S SETTLES R SEYWERD H STENZEL H WIEDENMANN W WOLF G BOUCROT J CALLOT O CHEN S CORDIER A DAVIER M DUFLOT L GRIVAZ JF HEUSSE P HOCKER A JACHOLKOWSKA A KIM DW LEDIBERDER F LEFRANCOIS J LUTZ AM SCHUNE MH TOURNEFIER E VEILLET JJ VIDEAU I ZERWAS D AZZURRI P BAGLIESI G BATIGNANI G BETTARINI S BOCCALI T BOZZI C CALDERINI G CARPINELLI M CIOCCI MA DELLORSO R FANTECHI R FERRANTE I FOA L FORTI F GIASSI A GIORGI MA GREGORIO A LIGABUE F LUSIANI A MARROCCHESI PS MESSINEO A PALLA F RIZZO G SANGUINETTI G SCIABA A SGUAZZONI G TENCHINI R TONELLI G VANNINI C VENTURI A VERDINI PG BLAIR GA BRYANT LM CHAMBERS JT GREEN MG MEDCALF T PERRODO P STRONG JA VONWIMMERSPERGTOELLER JH BOTTERILL DR CLIFFT RW EDGECOCK TR HAYWOOD S NORTON PR THOMPSON JC WRIGHT AE BLOCHDEVAUX B COLAS P EMERY S KOZANECKI W LANCON E LEMAIRE MC LOCCI E PEREZ P RANDER J RENARDY JF ROUSSARIE A SCHULLER JP SCHWINDLING J TRABELSI A VALLAGE B BLACK SN DANN JH JOHNSON RP KIN HY KONSTANTINIDIS N LITKE AM MCNEIL MA TAYLOR G BOOTH CN BREW CAJ CARTWRIGHT S COMBLEY F KELLY MS LEHTO M REEVE J THOMPSON LF AFFHOLDERBACH K BOHRER A BRANDT S COWAN G GRUPEN C SARAIVA P SMOLIK L STEPHAN F APOLLONIO M BOSISIO L DELLAMARINA R GIANNINI G GOBBO B MUSOLINO G ROTHBERG J WASSERBAECH S ARMSTRONG SR CHARLES E ELMER P FERGUSON DPS GAO Y GONZALEZ S GREENING TC HAYES OJ HU H JIN S MCNAMARA PA NACHTMAN JM NIELSEN J OREJUDOS W PAN YB SAADI Y SCOTT IJ WALSH J WU SL WU X ZOBERNIG G
Citation
R. Barate et al., DETERMINATION OF A(FB)(B) USING JET CHARGE MEASUREMENTS IN Z-DECAYS, Physics letters. Section B, 426(1-2), 1998, pp. 217-230
Citations number
19
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
426
Issue
1-2
Year of publication
1998
Pages
217 - 230
Database
ISI
SICI code
0370-2693(1998)426:1-2<217:DOAUJC>2.0.ZU;2-N
Abstract
An improved measurement of the forward-backward asymmetry in Z --> b ( b) over bar decays is presented, based on a sample of 4.1 million hadr onic Z decays collected by ALEPH between 1991 and 1995. Data are analy sed as a function of polar angle of the event axis and b purity. The e vent tagging efficiency and mean b-jet hemisphere charge are measured directly from data. From the measured forward-backward jet charge asym metry, the b quark asymmetry at root s= m(Z) is determined to be: A(FB )(b) = 0.1017 +/- 0.0032(syst.) +/- 0.0032(syst.). In the context of t he Standard Model this corresponds to a value of the effective weak mi xing angle of sin(2) theta(W)(eff)= 0.23109 +/- 0.00096. (C) 1998 Publ ished by Elsevier Science B.V, All rights reserved.