A MEASUREMENT OF CHARGED-PARTICLE MULTIPLICITY IN Z(O)-]C(C)OVER-BAR AND Z(O)-]B(B)OVER-BAR EVENTS

Authors
AKERS R ALEXANDER G ALLISON J AMETEWEE K ANDERSON KJ ARCELLI S ASAI S AXEN D AZUELOS G BALL AH BARBERIO E BARLOW RJ BARTOLDUS R BATLEY JR BEAUDOIN G BECK A BECK GA BEESTON C BEHNKE T BELL KW BELLA G BENTVELSEN S BERLICH P BETHKE S BIEBEL O BLOODWORTH IJ BOCK P BOSCH HM BOUTEMEUR M BRAIBANT S BRIGHTTHOMAS P BROWN RM BUIJS A BURCKHART HJ BURGIN R BURGARD C CAPDEVIELLE N 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 COOKE OC CUFFIANI M DADO S DALLAPICCOLA C DALLAVALLE GM DARLING C DEJONG S DELPOZO LA DENG H DITTMAR M DIXIT MS SILVA EDE DUBOSCQ JE DUCHOVNI E DUCKECK G DUERDOTH IP DUNWOODY UC EDWARDS JEG ELCOMBE PA ESTABROOKS PG ETZION E EVANS HG FABBRI F FABBRO B FANTI M FATH P 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 GROSS E HAGEMANN J HANSON GG HANSROUL M HARGROVE CK HART PA HAUSCHILD M HAWKES CM HEFLIN E HEMINGWAY RJ HERTEN G HEUER RD HILL JC HILLIER SJ HILSE T HOBSON PR HOCHMAN D HOMER RJ HONMA AK HOWARD R HUGHESJONES RE IGOKEMENES P IMRIE DC JAWAHERY A JEFFREYS PW JEREMIE H JIMACK M JONES M JONES RWL JOVANOVIC P JUI C KARLEN D KANZAKI J KAWAGOE K KAWAMOTO T KEELER RK KELLOGG RG KENNEDY BW KING B 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 LAUBER J LAYTER JG LEBLANC P LEE AM LEFEBVRE E LELLOUCH D LEROY C LETTS J LEVINSON L 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 MATTHEWS W MATTIG P MAUR U MCKENNA J MCMAHON TJ MCNAB AI MEIJERS F MERRITT FS MES H MICHELINI A MIDDLETON RP MIKENBERG G MILLER DJ MIR R MOHR W MONTANARI A MORI T MORII M MULLER U NELLEN B NIJJHAR B ONEALE SW OAKHAM FG ODORICI F OGREN HO OLDERSHAW NJ ORAM CJ OREGLIA MJ ORITO S PALMONARI F PANSART JP PATRICK GN PEARCE MJ PHILLIPS PD PILCHER JE PINFOLD J PLANE DE POFFENBERGER P POLI B POSTHAUS A PRITCHARD TW PRZYSIEZNIAK H REDMOND MW REES DL RIGBY D RISON MG ROBINS SA ROBINSON D RODNING N RONEY JM ROS E 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 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 SOLDNERREMBOLD S SPRINGER RW SPROSTON M STAHL A STARKS M STEGMANN C STEPHENS K STEUERER J STOCKHAUSEN B STROM D SZUMANSKI P TAFIROUT R TAKEDA H TAKESHITA T TARAS P TAREN S TECCHIO M TEIXEIRADIAS P TESCH N THOMSON MA TOUSIGNANT O TOWERS S TSCHEULIN M TSUKAMOTO T TURCOT AS TURNERWATSON MF UTZAT P VANKOOTEN R VASSEUR G VIKAS P 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 ZACEK V ZEUNER W ZORN GT
Citation
R. Akers et al., A MEASUREMENT OF CHARGED-PARTICLE MULTIPLICITY IN Z(O)-]C(C)OVER-BAR AND Z(O)-]B(B)OVER-BAR EVENTS, Physics letters. Section B, 352(1-2), 1995, pp. 176-186
Citations number
35
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
352
Issue
1-2
Year of publication
1995
Pages
176 - 186
Database
ISI
SICI code
0370-2693(1995)352:1-2<176:AMOCMI>2.0.ZU;2-Y
Abstract
We have used data from the OPAL detector at LEP to reconstruct D meso ns and secondary vertices in jets. We have studied the hemispheres of the events opposite these jets and obtain values of the hemisphere cha rged particle multiplicity in Z(0) --> u ($) over bar u, d ($) over ba r d, s ($) over bar s, Z(0) --> c ($) over bar c and Z(0) --> b ($) ov er bar b events of ($) over bar n(uds) = 10.41 +/- 0.06 +/- 0.09 +/- 0 .19; ($) over bar n(c) = 10.76 +/- 0.20 +/- 0.14 +/- 0.19; ($) over ba r n(b) = 11.81 +/- 0.01 +/- 0.12 +/- 0.21 where the first errors are s tatistical, the second systematic and the third a common scale uncerta inty. We find the difference in total charged particle multiplicity be tween c and b quark events and light (u, d, s) quark events to be delt a(cl) = 0.69 +/- 0.51 +/- 0.35; delta(bl) = 2.79 +/- 0.12 +/- 0.27. Th ese results are compared to the predictions of various models and QCD based calculations.