QCD STUDIES WITH E(-) ANNIHILATION DATA AT 161 GEV()E()

Authors
ACKERSTAFF K ALEXANDER G ALLISON J ALTEKAMP N AMETEWEE K ANDERSON KJ ANDERSON S ARCELLI S ASAI S AXEN D AZUELOS G BALL AN BELL KW BELLA G BENTVELSEN S BERLICH P BETHKE S BIEBEL O BIGUZZI A BIRD SD BLOBEL V BLOODWORTH IJ BLOOMER JE BOBINSKI M BOCK P BONACORSI D BOSCH HM BOUTEMEUR M BOUWENS BT BRAIBANT S BROWN RM BURCKHART HJ BURGARD C BURGIN R CAPILUPPI P CARNEGIE RK CARTER AA CARTER JR CHANG CY CHARLTON DG CHRISMAN D CLARKE PEL COHEN I CONBOY JE COOKE OC CUFFIANI M DADO S DALLAPICCOLA C DALLAVALLE GM DEJONG S DELPOZO LA DESCH K DIXIT MS SILVA EDCE DOUCET M DUCHOVNI E DUCKECK G DUERDOTH IP EATOUGH D EDWARDS JEG ESTABROOKS PG EVANS HG EVANS M FABBRI F FANTI M FATH P FAUST AA FIEDLER F FIERRO M FISCHER HM FOLMAN R FONG DG FOUCHER M FURTJES A GAGNON P GARY JW GASCON J GASCONSHOTKIN SM GEDDES NI GEICHGIMBEL C GERALIS T GIACOMELLI G GIACOMELLI P GIACOMELLI R GIBSON V GIBSON WR GINGRICH DM GLENZINSKI D GOLDBERG J GOODRICK MJ GORN W GRANDI C GROSS E GRUNHAUS J GRUWE M HAJDU C HANSON GG HANSROUL M HAPKE M HARGROVE CK HART PA HARTMANN C HAUSCHILD M HAWKES CM HAWKINGS R HEMINGWAY RJ HERNDON M HERTEN G HEUER RD HILDRETH MD HILL JC HILLIER SJ HILSE T HOBSON PR HOMER RJ HONMA AK HORVATH D HOWARD R HUGHESJONES RE HUTCHCROFT DE IGOKEMENES P IMRIE DC INGRAM MR ISHII K JAWAHERY A JEFFREYS PW JEREMIE H JIMACK M JOLY A JONES CR JONES G JONES M JONES RWL JOST U JOVANOVIC P JUNK TR KARLEN D KAWAGOE K KAWAMOTO T KEELER RK KELLOGG RG KENNEDY BW KIRK J KLUTH S KOBAYASHI T KOBEL M KOETKE DS KOKOTT TP KOLREP M KOMAMIYA S KRESS T KRIEGER P VONKROGH J KYBERD P LAFFERTY GD LAHMANN R LAI WP LANSKE D LAUBER J LAUTENSCHLAGER SR LAYTER JG LAZIC D LEE AM LEFEBVRE E LELLOUCH D LETTS J LEVINSON L LEWIS C LLOYD SL LOEBINGER FK LONG GD LOSTY MJ LUDWIG J MACCHIOLO A MACPHERSON 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 MCPHERSON RA 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 NAGAI K NAKAMURA I NEAL HA NELLEN B NIJJHAR B NISIUS R ONEALE SW OAKHAM FG ODORICI F OGREN HO OLDERSHAW NJ OMORI T OREGLIA MJ ORITO S PALINKAS J PASZTOR G PATER JR PATRICK GN PATT J PEARCE MJ PETZOLD S PFEIFENSCHNEIDER P PILCHER JE PINFOLD J PLANE DE POFFENBERGER P POLI B POSTHAUS A PRZYSIEZNIAK H REES DL RIGBY D ROBERTSON S ROBINS SA RODNING N RONEY JM ROOKE A ROS E ROSSI AM ROSVICK M ROUTENBURG P ROZEN Y RUNGE K RUNOLFSSON O RUPPEL U RUST DR RYLKO R SACHS K SARKISYAN EKG SASAKI M SBARRA C SCHAILE AD SCHAILE O SCHARF F SCHARFFHANSEN P SCHENK P SCHMITT B SCHMITT S SCHRODER M SCHULTZCOULON HC SCHULZ M SCHUMACHER M SCHUTZ P 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 STEIERT M STEPHENS K STEURER J STOCKHAUSEN B STROM D SZYMANSKI P TAFIROUT R TALBOT SD TANAKA S TARAS P TAREM S THIERGEN M THOMSON MA VONTORNE E TOWERS S TRIGGER I TSUKAMOTO T TSUR E TURCOT AS TURNERWATSON MF UTZAT P VANKOOTEN R VERZOCCHI M VIKAS P VINCTER M VOKURKA EH WACKERLE F WAGNER A WARD CP WARD DR WARD JJ WATKINS PM WATSON AT WATSON NK WELLS PS WERMES N WHITE JS WILKENS B WILSON GW WILSON JA WOLF G WOTTON S WYATT TR YAMASHITA S YEKUTIELI G ZACEK V ZERZION D
Citation
K. Ackerstaff et al., QCD STUDIES WITH E(-) ANNIHILATION DATA AT 161 GEV()E(), Zeitschrift fur Physik. C, Particles and fields, 75(2), 1997, pp. 193-207
Citations number
67
Categorie Soggetti
Physics, Particles & Fields
Journal title
Zeitschrift fur Physik. C, Particles and fields → ACNP
ISSN journal
01709739
Volume
75
Issue
2
Year of publication
1997
Pages
193 - 207
Database
ISI
SICI code
0170-9739(1997)75:2<193:QSWEAD>2.0.ZU;2-N
Abstract
Wt have studied hadronic events produced at LEP at a centre-of-mass en ergy of 161 GeV, We present distributions of event shape variables, je t rates, charged particle momentum spectra and multiplicities. We dete rmine the: strong coupling strength to be alpha(s)(161 GeV) = 0.101+/- 0.005(stat.)+/- 0.007(syst.). the mean charged particle multiplicity t o be [n(ch)](161 GeV) = 24.16+/-0.45(stat.)+/-0.44(syst,) and the posi tion of the peak in the xi(p) = In(1/x(p)) distribution to be xi(0)(16 1 GeV) = 4.00+/-0.03(stat.)+/-0.04(syst.). These results are compared to data taken at lower centre-of-mass energies and to analytic QCD or Monte Carlo predictions, Our measured value of alpha(8)(161 GeV) is co nsistent with other measurements of alpha(8). Within the current stati stical and systematic uncertainties, the PYTHIA, HERWIG and ARIADNE QC D Monte Carlo models and analytic calculations are in overall agreemen t with our measurements, The COJETS QCD Monte Carlo is in general agre ement with the data for momentum weighted distributions like Thrust, b ut predicts a significantly larger charged particle multiplicity than is. observed experimentally.