DETERMINATION OF EVENT SHAPE DISTRIBUTION AND ALPHA(B)(S) FROM Z(0)-]B(B)OVER-BAR EVENTS AT LEP

Authors
AKERS R ALEXANDER G ALLISON J ANDERSON KJ ARCELLI S ASAI S ASTBURY A AXEN D AZUELOS G BALL AH BARBERIO E BARLOW RJ BARTOLDUS R BATLEY JR BEAUDOIN G BECK A BECK GA BECKER J BEESTON C BEHNKE T BELL KW BELLA G BENTKOWSKI P BENTVELSEN S BERLICH P BETHKE S BIEBEL O BLOODWORTH IJ BOCK P BOSCH HM BOUTEMEUR M BRAIBANT S BRIGHTTHOMAS P BROWN RM BUIJS A BURKHART HJ BURGARD C CAPILUPPI P CARNEGIE RK CARTER AA CARTER JR CHANG CY CHARLESWORTH C CHARLTON DG CHU SL CLARKE PEL CLAYTON JC CLOWES SG COHEN I CONBOY JE COUPLAND M CUFFIANI M DADO S DALLAPICCOLA C DALLAVALLE GM DARLING C DEJONG S DENG H DITTMAR M DIXIT MS SILVA EDE DUBOSCQ JE DUCHOVNI E DUCKECK G DUERDOTH IP DUNWOODY UC ELCOMBE PA ESTABROOKS PG ETZION E EVANS HG FABBRI F FABBRO B FANTI M FIERRO M FINCKEKEELER M FISCHER HM FISCHER P FOLMAN R FONG DG FOUCHER M FUKUI H FURTJES A GAGNON P GAIDOT A GARY JW GASCON J GEDDES NI GEICHGIMBEL C GENSLER SW GENTIT FX GERALIS T GIACOMELLI G GIACOMELLI P GIACOMELLI R GIBSON V GIBSON WR GILLIES JD GOLDBERG J GINGRICH DM GOODRICK MJ GORN W GRANDI C GRANNIS P GROSS E HAGEMANN J HANSON GG HANSROUL M HARGROVE CK HART J HART PA HAUSCHILD M HAWKES CM HEFLIN E HEMINGWAY RJ HERTEN G HEUER RD HILL JC HILLIER SJ HILSE T HINSHAW DA HOBSON PR HOCHMAN D HOCKER A HOMER RJ HONMA AK HOWARD R HUGHESJONES RE HUMBERT R IGOKEMENES P IHSSEN H IMRIE DC JAWAHERY A JEFFREYS PW JEREMIE H JIMACK M JONES M JONES RWL JOVANOVIC P JUI C KARLEN D KAWAGOE K KAWAMOTO T KEELER RK KELLOGG RG KENNEDY BW KING B KING J KLUTH S KOBAYASHI T KOBEL M KOETKE DS KOKOTT TP KOMAMIYA S KOWALEWSKI R KRIEGER P VONKROUGH J KYBERD P LAFFERTY GD LEHTO MH LELLOUCH D LEROY C LETTS J LEVINSON L LI Z LIU F LLOYD SL LOEBINGER FK LONG GD LORAZO B LOSTY MJ LOU XC LUDWIG J LUIG A MANNELLI M MARCELLINI S MARKUS C MARTIN AJ MARTIN JP MASHIMO T MATTIG P MAUR U MCKENNA J MCMAHON TJ MCNAB AI MCNUTT JR MEIJERS F MERRITT FS MES H MICHELINI A MIDDLETON RP MIKENBERG G MILDENBERGER J MILLER DJ MIR R MOHR W MOISAN C MONTANARI A MORI T MORII M MULLER U NELLEN B NIJJHAR B ONEALE SW OAKHAM FG ODORICI F OGREN HO ORAM CJ OREGLIA MJ ORITO S PANSART JP PATRICK GN PEARCE MJ PFISTER P PHILLIPS PD PILCHER JE PINFOLD J PITMAN D PLANE DE POFFENBERGER P POLI B POSTHAUS A PRITCHARD TW PRZYSIEZNIAK H REDMOND MW REES DL RIGBY D RISON M ROBINS SA ROBINSON D RONEY JM ROSS E ROSSBERG S ROSSI AM ROSVICK M ROUTENBURG P ROZEN Y RUNGE K RUNOLFSSON O RUST DR SASAKI M SBARRA C SCHAILE AD SCHAILE O SCHARF F SCHARFFHANSEN P SCHENK P SCHMITT B VONDERSCHMITT H SCHRODER M SCHULTZCOULON HC SCHUTZ P SCHULZ M SCHWICK C SCHWIENING J SCOTT WG SETTLES M SHEARS TG SHEN BC SHEPHERDTHEMISTOCLEOUS CH SHERWOOD P SIROLI GP SKILLMAN A SKUJA A SMITH AM SMITH TJ SNOW GA SOBIE R SPRINGER RW SPROSTON M STAHL A STEGMANN C STEPHENS K STEUERER J STOCKHAUSEN B STROHMER R STROM D SZYMANSKI P TAKEDA H TAKESHITA T TAREM S TECCHIO M TEIXEIRADIAS P TESCH N THOMSON MA TOWERS S TSUKAMOTO T TURNERWATSON MF VANDENPLAS D VANKOOTEN R VASSEUR G VINCTER M 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 WINTERER VH WLODEK T WOLF G WOTTON S WYATT TR YEAMAN A YEKUTIELI G YURKO M ZEUNER W ZORN GT
Citation
R. Akers et al., DETERMINATION OF EVENT SHAPE DISTRIBUTION AND ALPHA(B)(S) FROM Z(0)-]B(B)OVER-BAR EVENTS AT LEP, Zeitschrift fur Physik. C, Particles and fields, 65(1), 1995, pp. 31-45
Citations number
52
Categorie Soggetti
Physics, Particles & Fields
Journal title
Zeitschrift fur Physik. C, Particles and fields → ACNP
ISSN journal
01709739
Volume
65
Issue
1
Year of publication
1995
Pages
31 - 45
Database
ISI
SICI code
0170-9739(1995)65:1<31:DOESDA>2.0.ZU;2-A
Abstract
In hadronic Z(0) decays collected by the OPAL experiment at LEP, event shape variables such as jet rates, jet masses, thrust and the energy- energy correlation for Z(0) --> b (b) over bar events are compared to those for all flavours using secondary vertex information to tag the b quarks. The measured distributions are found to be well described by an O(alpha(s)) calculation for heavy quarks as well as by parton showe r simulations. We also determine the ratio of the strong coupling cons tant for b quacks and all quarks, alpha(s)(b)/alpha(s)(incl), from the se distributions. We find alpha(s)(b)/alpha(s)(incl) = 0.994 +/- 0.005 (+0.010)(-0.012), where the errors are the statistical and systematic errors. The result can be converted into the ratio for b quarks relat ive to the complementary flavours udsc alpha(s)(b)/alpha(s)(udsc) = 0. 992 +/- 0.007 (+0.013)(-0.015).