SEARCH FOR THE B-C MESON IN HADRONIC Z(0) DECAYS

Authors
ACKERSTAFF K ALEXANDER G ALLISON J ALTEKAMP N ANDERSON KJ ANDERSON S ARCELLI S ASAI S ASHBY SF AXEN D AZUELOS G BALL AH BARBERIO E BARLOW RJ BARTOLDUS R BATLEY JR BAUMANN S BECHTLUFT J BEESTON C BEHNKE T BELL AN BELL KW BELLA G BENTVELSEN S BETHKE S BETTS S BIEBEL O BIGUZZI A BIRD SD BLOBEL V BLOODWORTH IJ BLOOMER JE BOBINSKI M BOCK P BONACORSI D BOUTEMEUR M BRAIBANT S BRIGLIADORI L 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 COUYOUMTZELIS C COXE RL CUFFIANI M DADO S DALLAPICCOLA C DALLAVALLE GM DAVIS R DEJONG S DELPOZO LA DESCH K DIENES B DIXIT MS DOUCET M DUCHOVNI E DUCKECK G DUERDOTH IP EATOUGH D EDWARDS JEG ESTABROOKS PG EVANS HG EVANS M FABBRI F FANFANI A FANTI M FAUST AA FELD L FIEDLER F FIERRO M FISCHER HM FLECK I FOLMAN R FONG DG FOUCHER M FURTJES A FUTYAN DI 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 HOBSON PR HOCKER A HOMER RJ HONMA AK HORVATH D HOSSAIN KR HOWARD R HUNTEMEYER P 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 JOST U JOVANOVIC P JUNK TR KANZAKI J KARLEN D KARTVELISHVILI V KAWAGOE K KAWAMOTO T KAYAL PI KEELER RK KELLOGG RG KENNEDY BW KIRK J KLIER A 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 LLOYD SL LOEBINGER FK LONG GD LOSTY MJ LUDWIG J LUI D MACCHIOLO A MACPHERSON A MANNELLI M MARCELLINI S MARKOPOULOS C MARKUS C MARTIN AJ MARTIN JP MARTINEZ G MASHIMO T MATTIG P MCDONALD WJ MCKENNA J MCKIGNEY EA MCMAHON TJ MCPHERSON RA MEIJERS F MENKE S MERRITT FS MES H MEYER J MICHELINI A MIKENBERG G MILLER DJ MINCER A MIR R MOHR W MONTANARI A MORI T MULLER U MIHARA S NAGAI K NAKAMURA I NEAL HA NELLEN B NISIUS R ONEALE SW OAKHAM FG ODORICI F OGREN HO OH A OLDERSHAW NJ OREGLIA MJ ORITO S PALINKAS J PASZTOR G PATER JR PATRICK GN PATT J PEREZOCHOA R PETZOLD S PFEIFENSCHNEIDER P PILCHER JE PINFOLD J PLANE DE POFFENBERGER P POLI B POSTHAUS A REMBSER C ROBERTSON S ROBINS SA RODNING N RONEY JM ROOKE A ROSSI AM ROUTENBURG P ROZEN Y RUNGE K RUNOLFSSON O RUPPEL U RUST DR RYLKO R SACHS K SAEKI T SANG WM SARKISYAN EKG SBARRA C SCHAILE AD SCHAILE O SCHARF F SCHARFFHANSEN P SCHIECK J SCHLEPER P SCHMITT B SCHMITT S SCHONING A SCHRODER M SCHULTZCOULON HC SCHUMACHER M SCHWICK C SCOTT WG SHEARS TG SHEN BC SHEPHERDTHEMISTOCLEOUS CH SHERWOOD P SIROLI GP SITTLER A SKILLMAN A SKUJA A SMITH AM SNOW GA SOBIE R SOLDNERREMBOLD S SPRINGER RW SPROSTON M STEPHENS K STEUERER J STOCKHAUSEN B STOLL K STROM D STROHMER R SZYMANSKI P TAFIROUT R TALBOT SD TANAKA S TARAS P TAREM S TEUSCHER R THIERGEN M THOMSON MA VONTORNE E TORRENCE E TOWERS S TRIGGER I TROCSANYI Z TSUR E TURCOT AS TURNERWATSON MF UTZAT P VANKOOTEN R VERZOCCHI M VIKAS P VOKURKA EH VOSS H WACKERLE F WAGNER A WARD CP WARD DR WATKINS PM WATSON AT WATSON NK WELLS PS WERMES N WHITE JS WILKENS B WILSON GW WILSON JA WYATT TR YAMASHITA S YEKUTIELI G ZACEK Y ZERZION D
Citation
K. Ackerstaff et al., SEARCH FOR THE B-C MESON IN HADRONIC Z(0) DECAYS, Physics letters. Section B, 420(1-2), 1998, pp. 157-168
Citations number
36
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
420
Issue
1-2
Year of publication
1998
Pages
157 - 168
Database
ISI
SICI code
0370-2693(1998)420:1-2<157:SFTBMI>2.0.ZU;2-A
Abstract
A search for decays of the B-c meson was performed using data collecte d from 1990-1995 with the OPAL detector on or near the Z(o) peak at LE P. The decay channels B-c(+) --> J/psi pi(+), B-c(+) --> J/psi a(1)(+) and B-c(+) --> J/psi l(+) nu were investigated, where l denotes an el ectron or a muon. Two candidates are observed in the mode B-c(+) --> J /psi pi(+), With an estimated background of (0.63 +/- 0.20) events. Th e weighted mean of the masses of the two candidates is (6.32 +/- 0.06) GeV/c(2), which is consistent with the predicted mass of the B-c meso n. One candidate event is observed in the mode B-c(+) --> J/psi l(+) n u, with an estimated background of (0.82 +/- 0.19) events. No candidat e events are observed in the B-c(+) --> J/psi a(1)(+) decay mode, with an estimated background of (1.10 +/- 0.22) events, Upper bounds at th e 90% confidence level ate set on the production rates for these proce sses. (C) 1998 Published bq Elsevier Science B.V.