MEASUREMENT OF HEAVY-QUARK FORWARD-BACKWARD ASYMMETRIES AND AVERAGE BMIXING USING LEPTONS IN MULTIHADRONIC EVENTS

Authors
ALEXANDER G ALLISON J ALTEKAMP N AMETEWEE K ANDERSON KJ ANDERSON S ARCELLI S ASAI S AXEN D AZUELOS G BALL AH BARBERIO E BARLOW RJ BARTOLDUS R BATLEY JR BEAUDOIN G BECHTLUFT J BECK GA BEESTON C BEHNKE T BELL AN BELL KW BELLA G BENTVELSEN S BERLICH P BETHKE S BIEBEL O BLOODWORTH IJ BLOOMER JE BOCK P BOSCH HM BOUTEMEUR M BOUWENS BT BRAIBANT S BRIGHTTHOMAS P BROWN RM BURCKHART HJ BURGARD C BURGIN R CAPILUPPI P CARNEGIE RK CARTER AA CARTER JR CHANG CY CHARLESWORTH C CHARLTON DG CHRISMAN D CHU SL CLARKE PEL CLOWES SG COHEN I CONBOY JE COOKE OC CUFFIANI M DADO S DALLAPICCOLA C DALLAVALLE GM DARLING C DEJONG S DELPOZO LA DIXIT MS SILVA EDE DUCHOVNI E DUCKECK G DUERDOTH LP DUNWOODY UC EDWARDS JEG ESTABROOKS PG EVANS HG FABBRI F FABBRO B FATH P FIEDLER F FIERRO M FINCKEKEELER M FISCHER HM FOLMAN R FONG DG FOUCHER M FUKUI H FURTJES A GAGNON P GAIDOT A GARY JW GASCON J GASCONSHOTKIN SM GEDDES NI GEICHGIMBEL C GENSLER SW GENTIT FX GERALIS T GIACOMELLI G GIACOMELLI P GIACOMELLI R GIBSON V GIBSON WR GINGRICH DM GOLDBERG J GOODRICK MJ GORN W GRANDI C GROSS E HAJDU C HANSON GG HANSROUL M HAPKE M HARGROVE CK HART PA HARTMANN C HAUSCHILD M HAWKES CM HAWKINGS R HEMINGWAY RJ HERTEN G HEUER RD HILDRETH MD HILL JC HILLIER SJ HILSE T HOBSON PR HOCHMAN D HOMER RJ HONMA AK HORVATH D HOWARD R HUGHESJONES RE HUTCHCROFT DE IGOKEMENES P IMRIE DC JAWAHERY A JEFFREYS PW JEREMIE H JIMACK M JOLY A JONES M JONES RWL JOST U JOVANOVIC P KARLEN D KAWAMOTO T KEELER RK KELLOGG RG KENNEDY BW KING BJ KING J KIRK J KLUTH S KOBAYASHI T KOBEL M KOETKE DS KOKOTT TP KOMAMIYA S KOWALEWSKI R KRESS T KRIEGER P VONKROGH J KYBERD P LAFFERTY GD LAFOUX H LAHMANN R LAI WP LANSKE D LAUBER J LAYTER JG LEE AM LEFEBVRE E LELLOUCH D LETTS J LEVINSON L LEWIS C LLOYD SL LOEBINGER FK LONG GD LORAZO B LOSTY MJ LUDWIG J LUIG A MALIK A MANNELLI M MARCELLINI S MARKUS C MARTIN AJ MARTIN JP MARTINEZ G MASHIMO T MATTHEWS W MATTIG P MCDONALD WJ MCKENNA J MCKIGNEY EA MCMAHON TJ MCNAB AI MEIJERS F MENKE S MERRITT FS MES H MEYER J MICHELINI A MIKENBERG G MILLER DJ MIR R MOHR W MONTANARI A MORI T MORII M MULLER U NELLEN B NIJJHAR B NISIUS R ONEALE SW OAKHAM FG ODORICI F OGREN HO OLDERSHAW NJ OMORI T ORAM CJ OREGLIA MJ ORITO S PALAZZO M PALINKAS J PALMONARI FM PANSART JP PASZTOR G PATER JR PATRICK GN PEARCE MJ PHILLIPS PD PILCHER JE PINFOLD J PLANE DE POFFENBERGER P POLI B POSTHAUS A PRITCHARD TW PRZYSIEZNIAK H REES DL RIGBY D RISON MG ROBINS SA RODNING N RONEY JM ROS E ROSSI AM ROSVICK M ROUTENBURG P ROZEN Y RUNGE K RUNOLFSSON O RUST DR RYLKO R SARKISYAN EKG SASAKI M SBARRA C SCHAILE AD SCHAILE O SCHARF F SCHARFFHANSEN P SCHENK P SCHMITT B SCHRODER M SCHULTZCOULON HC SCHULZ M SCHUTZ P SCHWIENING J SCOTT WG SHEARS TG SHEN BC SHEPHERDTHEMISTOCLEOUS CH SHERWOOD P SIROLI GP SITTLER A SKILLMAN A SKUJA A SMITH AM SMITH TJ SNOW GA SOBIE R SOLDNERREMBOLD S SPRINGER RW SPROSTON M STAHL A STARKS M STEGMANN C STEPHENS K STEUERER J STOCKHAUSEN B STROM D STRUMIA F SZYMANSKI P TAFIROUT R TAKEDA H TARAS P TAREM S TECCHIO M TESCH N THOMSON MA VONTORNE E TOWERS S TSCHEULIN M TSUKAMOTO T TSUR E TURCOT AS TURNERWATSON MF UTZAT P VANKOOTEN R VASSEUR G VIKAS P VINCTER M VOKURKA EH WACKERLE F WAGNER A WAGNER DL WARD CP WARD DR WARD JJ WATKINS PM WATSON AT WATSON NK WEBER P WELLS PS WERMES N WILKENS B WILSON GW WILSON JA WLODEK T WOLF G WOTTON S WYATT TR XELLA S YAMASHITA S YEKUTIELI G ZACEK V
Citation
G. Alexander et al., MEASUREMENT OF HEAVY-QUARK FORWARD-BACKWARD ASYMMETRIES AND AVERAGE BMIXING USING LEPTONS IN MULTIHADRONIC EVENTS, Zeitschrift fur Physik. C, Particles and fields, 70(3), 1996, pp. 357-369
Citations number
43
Categorie Soggetti
Physics, Particles & Fields
Journal title
Zeitschrift fur Physik. C, Particles and fields → ACNP
ISSN journal
01709739
Volume
70
Issue
3
Year of publication
1996
Pages
357 - 369
Database
ISI
SICI code
0170-9739(1996)70:3<357:MOHFAA>2.0.ZU;2-#
Abstract
A measurement of the forward-backward asymmetries of e(+)e(-) --> Z(0) --> <b(b)over bar> and e(+)e(-) --> Z(0) --> <c(c)over bar> using ele ctrons and muons produced in semileptonic decays of bottom and charm h adrons is presented. Two new variables designed to optimize flavour se paration are used in a maximum likelihood fit to a sample of events co ntaining one or two identified leptons, allowing the simultaneous extr action of the b and c quark forward-backward asymmetries as well as th e average B-0-B-0 mixing. Using all data collected by OPAL up to the e nd of 1994, the asymmetries are measured to be: A(FB)(b) = (5.5 +/- 2. 4 +/- 0.3)% A(FB)(c) = (-7.5 +/- 3.4 +/- 0.6)% at [root s] = 89.52 GeV , A(FB)(b) = (9.06 +/- 0.51 +/- 0.23)% A(FB)(c) = (6.00 +/- 0.67 +/- 0 .52)% at [root s] = 91.24 GeV, A(FB)(b) = (11.7 +/- 2.0 +/- 0.3)% A(FB )(c) = (14.1 +/- 2.8 +/- 0.9)% at [root s] = 92.94 GeV. For the averag e B-0-(B-0) over bar mixing a value of: <(chi)over bar) = 0.1107 +/- 0 .0062 +/- 0.0055, is obtained, where in each case the first error is s tatistical and the second systematic.