A MEASUREMENT OF THE PRODUCTION OF D-ASTERISK(+ -) MESONS ON THE Z(0)RESONANCE/

Authors
AKERS R ALEXANDER G ALLISON J AMETEWEE K 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 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 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 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 HAGERMANN 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 HOCKER A 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 LEDU P LEE AM LEFEBVRE E 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 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 ORAM CJ OREGLIA MJ ORITO S PANSART JP PATRICK GN PEARCE MJ 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 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 STEGEMANN C STEPHENS K STEURER J STOCKHAUSEN B STROM D SZYMANSKI P TAFIROUT R TAKEDA H TAKESHITA T TARAS P TAREM S TECCHIO M TEIXEIRADIAS P TESCH N THOMSON MA TOUSIGNANT O TOWERS S TSCHEULIN M TSUKAMOTO T TURCOT A 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 THE PRODUCTION OF D-ASTERISK(+ -) MESONS ON THE Z(0)RESONANCE/, Zeitschrift fur Physik. C, Particles and fields, 67(1), 1995, pp. 27-44
Citations number
75
Categorie Soggetti
Physics, Particles & Fields
Journal title
Zeitschrift fur Physik. C, Particles and fields → ACNP
ISSN journal
01709739
Volume
67
Issue
1
Year of publication
1995
Pages
27 - 44
Database
ISI
SICI code
0170-9739(1995)67:1<27:AMOTPO>2.0.ZU;2-H
Abstract
We have studied the production of D(+/-) mesons in a sample of 1,25 m illion multihadronic decays of the Z(0), in which 1969 candidates have been identified. We have determined the total multiplicity of charged D mesons in multihadronic Z(0) decays to be (n) over bar)(Z0-->D*+/- X) = 0.183 +/- 0.009(stat) +/- 0.007(sys) +/-0.008(ext). The last erro r is due to branching ratios external to this analysis. Decays of c-qu arks are separated from those of b-quarks by a combination of bottom t agging methods using leptons, jet shape variables, and lifetime inform ation. From this we find Gamma(Z(0) --> <c(c)over bar>)/Gamma(Z(0) --> hadrons) = 0.142 +/- 0.008(stat) +/- 0.009(sys) +/- 0.011(ext). We me asure the mean scaled energy of D(+/-) mesons in primary charm events to be [x(c-->D+/-)] = 0.515(-0.005)(+0.008)(stat) +/- 0.010(sys). St udying D production at very low x(D)* we find indications for <c(c)ov er bar> production from gluon splitting and measure the mean multiplic ity of this process in multihadronic Z(0) decays to be (n) over bar(g- -><c(c)over bar>) = 0.044 +/- 0.014(stat) +/- 0.015(sys), assuming the Standard Model prediction for Gamma(<c(c)over bar>)/Gamma(had). By co mparing our observed D mean scaled energy with measurements at lower energies we find evidence for scaling violations.