A MEASUREMENT OF THE AVERAGE LIFETIME OF B-FLAVORED BARYONS

Authors
AKERS R ALEXANDER G ALLISON J ANDERSON KJ ARCELLI S ASTBURY A AXEN D AZUELOS G BAINES JTM BALL AH BANKS J BARLOW RJ BARNETT S BARTOLDUS R BATLEY JR BEAUDOIN G BECK A BECK GA BECKER J BEESTON C BEHNKE T BELL KW BELLA G BENTKOWSKI P BERLICH P BETHKE S BIEBEL O BLOODWORTH IJ BOCK P BODEN B BOSCH HM BOUTEMEUR M BREUKER H BRIGHTTHOMAS P BROWN RM BUIJS A BURCKHART HJ BURGARD C CAPILUPPI P CARNEGIE RK CARTER AA CARTER JR CHANG CY CHARLTON DG CHU SL CLARKE PEL CLAYTON JC COHEN I CONBOY JE COOPER M COUPLAND M CUFFIANI M DADO S DALLAVALLE GM DEJONG S DELPOZO LA DENG H DIECKMANN A DITTMAR M DIXIT MS SILVA EDE DUBOSCQ JE DUCHOVNI E DUCKECK G DUERDOTH IP DUMAS DJP ELCOMBE PA ESTABROOKS PG ETZION E EVANS HG FABBRI F FABBRO B FIERRO M FINCKEKEELER M FISCHER HM FONG DG FOUCHER M GAIDOT A GARY JW GASCON J GEDDES NI GEICHGIMBEL C GENSLER SW GENTIT FX GIACOMELLI G GIACOMELLI R GIBSON V GIBSON WR GILLIES JD GOLDBERG J GINGRICH DM GOODRICK MJ GORN W GRANDI C GRANT FC HAGEMANN J HANSON GG HANSROUL M HARGROVE CK HARRISON PF HART J HATTERSLEY PM HAUSCHILD M HAWKES CM HEFLIN E HEMINGWAY RJ HERTEN G HEUER RD HILL JC HILLIER SJ HILSE T HINSHAW DA HOBBS JD HOBSON PR HOCHMAN D HOMER RJ HONMA AK HUGHESJONES RE HUMBERT R IGOKEMENES P IHSSEN H IMRIE DC JANISSEN AC 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 J KLUTH S KOBAYASHI T KOETKE DS KOKOTT TP KOMAMIYA S KRAL JF KOWALEWSKI R VONKROGH J KROLL J KYBERD P LAFFERTY GD LAFOUX H LAHMANN R LAUBER J LAYTER JG LEBLANC P LEE AM LEFEBVRE E LEHTO MH LELLOUCH D LEROY C LETTS J LEVINSON L LLOYD SL LOEBINGER FK LORAH JM 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 MCNUTT JR MEIJERS F MENSZNER D MERRITT FS MES H MICHELINI A MIDDLETON RP MIKENBERG G MLDENBERGER J MILLER DJ MIR R MOHR W MOISAN C MONTANARI A MORI T MORII M MULLER U NELLEN B NGUYEN HH ONEALE SW OAKHAM FG ODORICI F OGREN HO ORAM CJ OREGLIA MJ ORITO S PANSART JP PANZERSTEINDEL B PASCHIEVICI P PATRICK GN PAZJAOSHVILI N PEARCE MJ PFISTER P PILCHER JE PINFOLD J PITMAN D PLANE DE POFFENBERGER P POLI B PRITCHARD TW PRZYSIEZNIAK H QUAST G REDMOND MW REES DL RICHARDS GE RISON M ROBINS SA ROBINSON D ROLLNIK A RONEY JM ROS E ROSSBERG S ROSSI AM ROSVICK M ROUTENBURG P RUNGE K RUNOLFSSON O RUST DR SASAKI M SBARRA C SCHAILE AD SCHAILE O SCHAPPERT W SCHARF F SCHARFFHANSEN P SCHENK P SCHMITT B VONDERSCHMITT H SCHRODER 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 STROHMER R STROM D TAKEDA H TAKESHITA T TAREM S TECCHIO M TEIXEIRADIAS P TESCH N THOMSON MA TORRENTELUJAN E TOWERS S TRANSTROMER G TRESILIAN NJ TSUKAMOTO T TURNER MF VANDENPLAS D VANKOOTEN R VANDALEN GJ VASSEUR G WAGNER A WAGNER DL WAHL C WARD CP WARD DR WATKINS PM WATSON AT WATSON NK WEBER M WEBER P WELLS PS WERMES N WHALLEY MA WILKENS B WILSON GW WILSON JA WINTERER VH WLODEK T WOLF G WOTTON S WYATT TR YAARI R YEAMAN A YEKUTIELI G YURKO M ZEUNER W ZORN GT
Citation
R. Akers et al., A MEASUREMENT OF THE AVERAGE LIFETIME OF B-FLAVORED BARYONS, Physics letters. Section B, 316(2-3), 1993, pp. 435-447
Citations number
40
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
316
Issue
2-3
Year of publication
1993
Pages
435 - 447
Database
ISI
SICI code
0370-2693(1993)316:2-3<435:AMOTAL>2.0.ZU;2-4
Abstract
The average lifetime of baryons containing a b quark has been measured with the OPAL detector using data collected between 1990 and 1992. Se mileptonically decaying b-flavoured baryons which produce a LAMBDA are identified through the charge correlation of the LAMBDA and lepton. T he decay point of the b baryon is estimated by the LAMBDA-lepton verte x, and the observed distribution of decay lengths is fitted to determi ne the average lifetime. In the data sample consisting of 261 right-si gn and 104 wrong-sign LAMBDA-lepton charge combinations, the average b baryon lifetime is found to be tau = 1.05(+.0.23/-0.20) +/- 0.08 ps, where the first error is statistical and the second systematic.