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Titolo:
A MEASUREMENT OF THE AVERAGE BOTTOM HADRON LIFETIME
Autore:
ACKERSTAFF K; ALEXANDER G; ALLISON J; ALTEKAMP N; AMETEWEE K; ANDERSON KJ; ANDERSON S; ARCELLI S; ASAI S; AXEN D; AZUELOS G; BALL AH; BARBERIO E; BARLOW RJ; BARTOLDUS R; BATLEY JR; BECHTLUFT J; BEESTON C; BEHNKE T; BELL AN; BELL KW; BELLA G; BENTVELSEN S; BERLICH P; BETHKE S; BIEBEL O; BLOBEL V; BLOODWORTH IJ; BLOOMER JE; BOBINSKI M; BOCK P; BOSCH HM; BOUTEMEUR M; BOUWENS BT; BRAIBANT S; 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; CUFFIANI M; DADO S; DALLAPICCOLA C; DALLAVALLE GM; DEJONG S; DELPOZO LA; DESCH K; DIXIT MS; SILVA EDE; DOUCET M; DUCHOVNI E; DUCKECK G; DUERDOTH IP; EDWARDS JEG; ESTABROOKS PG; EVANS HG; EVANS M; FABBRI F; FATH P; FIEDLER F; FIERRO M; FISCHER HM; FOLMAN R; FONG DG; FOUCHER M; FURTJES A; GAGNON P; GAIDOT A; GARY JW; GASCON J; GASCONSHOTKIN SM; GEDDES NI; GEICHGIMBEL C; GENTIT FX; 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; HILSE T; HOBSON PR; HOMER RJ; HONMA AK; HORVATH D; HOWARD R; HUGHESJONES RE; 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; JONES RWL; JOST U; JOVANOVIC P; JUNK TR; KARLEN D; KAWAGOE K; KAWAMOTO T; KEELER RK; KELLOGG RG; KENNEDY BW; KING BJ; KIRK J; KLUTH S; KOBAYASHI T; KOBEL M; KOETKE DS; KOKOTT TP; KOLREP M; KOMAMIYA S; KRESS T; KRIEGER P; VONKROGH J; KYBERD P; LAFFERTY GD; LAFOUX H; LAHMANN R; LAI WP; LANSKE D; LAUBER J; LAUTENSCHLAGER SR; LAYTER JG; LAZIC D; LEE AM; LEFEBVRE E; LELLOUCH D; LETTS J; LEVINSON L; LEWIS C; LLOYD SL; LOEBINGER FK; LONG GD; LOSTY MJ; LUDWIG J; MALIK A; MANNELLI M; MARCELLINI S; MARKUS C; MARTIN AJ; MARTIN JP; MASHIMO T; MATTHEWS W; MATTIG P; MCDONALD WJ; MCKENNA J; MCKIGNEY EA; MCMAHON TJ; MARTINEZ G; MCNAB AI; MCPHERSON RA; MEIJERS F; MENKE S; MERRITT FS; MES H; MEYER J; MICHELINI A; MIKENBERG G; MILLER DJ; MIR R; MOHR W; MONTANARI A; MORI T; MORII M; MULLER U; NAGAI K; NAKAMURA I; NEAL HA; NELLEN B; NIJJHAR B; NISIUS R; ONEALE SW; OAKHAM FG; ODORICI F; OGREN HO; OLDERSHAW NJ; OMORI T; OREGLIA MJ; ORITO S; PALINKAS J; PASZTOR G; PATER JR; PATRICK GN; PATT J; PEARCE MJ; PETZOLD S; PFEIFENSCHNEIDER P; PILCHER JE; PINFOLD J; PLANE DE; POFFENBERGER P; POLI B; POSTHAUS A; PRZYSIEZNIAK H; REES DL; RIGBY D; ROBERTSON S; ROBINS SA; RODNING N; RONEY JM; ROOKE A; ROS E; ROSSI AM; ROSVICK M; ROUTENBURG P; ROZEN Y; RUNGE K; RUNOLFSSON O; RUPPEL U; RUST DR; RYLKO R; SACHS K; SARKISYAN EKG; SASAKI M; SBARRA C; SCHAILE AD; SCHAILE O; SCHARF F; SCHARFFHANSEN P; SCHENK P; SCHMITT B; SCHMITT S; SCHRODER M; SCHULTZCOULON HC; SCHULZ M; SCHUMACHER M; SCHUTZ P; 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; STAHL A; STEIERT M; STEPHENS K; STEUERER J; STOCKHAUSEN B; STROM D; STRUMIA F; SZYMANSKI P; TAFIROUT R; TALBOT SD; TANAKA S; TARAS P; TAREM S; THIERGEN M; THOMSON MA; VONTORNE E; TOWERS S; TRIGGER I; TSUKAMOTO T; TSUR E; TURCOT AS; TURNERWATSON MF; UTZAT P; VANKOOTEN R; VASSEUR G; VERZOCCHI M; VIKAS P; VINCTER M; VOKURKA EH; WACKERLE F; WAGNER A; WARD CP; WARD DR; WARD JJ; WATKINS PM; WATSON AT; WATSON NK; WELLS PS; WERMES N; WHITE JS; WILKENS B; WILSON GW; WILSON JA; WOLF G; WOTTON S; WYATT TR; YAMASHITA S; YEKUTIELI G; ZACEK V;
Indirizzi:
CERN,EUROPEAN ORG PARTICLE PHYS CH-1211 GENEVA 23 SWITZERLAND UNIV BIRMINGHAM,SCH PHYS & SPACE RES BIRMINGHAM B15 2TT W MIDLANDS ENGLAND UNIV BOLOGNA,DIPARTIMENTO FIS I-40126 BOLOGNA ITALY IST NAZL FIS NUCL I-40126 BOLOGNA ITALY UNIV BONN,INST PHYS D-53115 BONN GERMANY UNIV CALIF RIVERSIDE,DEPT PHYS RIVERSIDE CA 92521 UNIV CAMBRIDGE,CAVENDISH LAB CAMBRIDGE CB3 0HE ENGLAND CARLETON UNIV,DEPT PHYS,OTTAWA CARLETON INST PHYS OTTAWA ON K1S 5B6 CANADA CARLETON UNIV,CTR RES PARTICLE PHYS OTTAWA ON K1S 5B6 CANADA UNIV CHICAGO,ENRICO FERMI INST CHICAGO IL 60637 UNIV CHICAGO,DEPT PHYS CHICAGO IL 60637 UNIV FREIBURG,FAK PHYS D-79104 FREIBURG GERMANY UNIV HEIDELBERG,INST PHYS D-69120 HEIDELBERG GERMANY INDIANA UNIV,DEPT PHYS BLOOMINGTON IN 47405 UNIV LONDON QUEEN MARY & WESTFIELD COLL LONDON E1 4NS ENGLAND RHEIN WESTFAL TH AACHEN,INST PHYS 3 D-52056 AACHEN GERMANY UNIV COLL LONDON LONDON WC1E 6BT ENGLAND UNIV MANCHESTER,SCHUSTER LAB,DEPT PHYS MANCHESTER M13 9PL LANCS ENGLAND UNIV MARYLAND,DEPT PHYS COLLEGE PK MD 20742 UNIV MONTREAL,PHYS NUCL LAB MONTREAL PQ H3C 3J7 CANADA UNIV OREGON,DEPT PHYS EUGENE OR 97403 RUTHERFORD APPLETON LAB DIDCOT OX11 0QX OXON ENGLAND CTR ETUD SACLAY,CEA,DAPNIA SPP F-91191 GIF SUR YVETTE FRANCE TECHNION ISRAEL INST TECHNOL,DEPT PHYS IL-32000 HAIFA ISRAEL TEL AVIV UNIV,DEPT PHYS & ASTRON IL-69978 TEL AVIV ISRAEL UNIV TOKYO,INT CTR ELEMENTARY PARTICLE PHYS TOKYO 113 JAPAN UNIV TOKYO,DEPT PHYS TOKYO 113 JAPAN BRUNEL UNIV UXBRIDGE UB8 3PH MIDDX ENGLAND WEIZMANN INST SCI,PARTICLE PHYS DEPT IL-76100 REHOVOT ISRAEL UNIV HAMBURG,DESY,INST EXPT PHYS 2 D-22607 HAMBURG GERMANY UNIV VICTORIA,DEPT PHYS VICTORIA BC V8W 3P6 CANADA UNIV BRITISH COLUMBIA,DEPT PHYS VANCOUVER BC V6T 1Z1 CANADA UNIV ALBERTA,DEPT PHYS EDMONTON AB T6G 2J1 CANADA DUKE UNIV,DEPT PHYS DURHAM NC 27708 RES INST PARTICLE & NUCL PHYS H-1525 BUDAPEST HUNGARY INST NUCL RES H-4001 DEBRECEN HUNGARY UNIV MUNICH,SEKT PHYS D-85748 GARCHING GERMANY TRIUMF VANCOUVER BC V6T 2A3 CANADA LAJOS KOSSUTH UNIV,DEPT EXPT PHYS DEBRECEN HUNGARY
Titolo Testata:
Zeitschrift fur Physik. C, Particles and fields
fascicolo: 3, volume: 73, anno: 1997,
pagine: 397 - 408
SICI:
0170-9739(1997)73:3<397:AMOTAB>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
B-QUARK FRAGMENTATION; OPAL JET CHAMBER; MICROVERTEX DETECTOR; Z(0) DECAYS; LEP;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
26
Recensione:
Indirizzi per estratti:
Citazione:
K. Ackerstaff et al., "A MEASUREMENT OF THE AVERAGE BOTTOM HADRON LIFETIME", Zeitschrift fur Physik. C, Particles and fields, 73(3), 1997, pp. 397-408

Abstract

The average b hadron Lifetime, tau(b) has been measured using approximately 3.5 million hadronic events collected with the OPAL detector atLEP between 1991 and 1994. A Lifetime tag based on a neural network algorithm was used to select Z(0) --> b (b) over bar events. A secondary vertex reconstructed on the opposite side from the b-tag was used tomeasure the b hadron decay length. This was combined with an estimateof the b hadron momentum, allowing the b hadron decay time to be evaluated. The lifetime, tau(b) = 1.611 +/- 0.010 (stat) +/- 0.027 (syst) ps, was extracted from a fit involving the distribution of the 95620 decay times reconstructed in the data and the corresponding distribution in Monte Carlo.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/12/20 alle ore 20:15:39