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Titolo:
A MEASUREMENT OF THE FORWARD-BACKWARD ASYMMETRY OF E(-)-]B(B)OVER-BARBY APPLYING A JET CHARGE ALGORITHM TO LIFETIME TAGGED EVENTS()E()
Autore:
AKERS R; 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; BEAUDOIN G; BETHKE S; BECK A; BECK GA; BEESTON C; BEHNKE T; BELL KW; BELLA G; BENTVELSEN S; BERLICH P; BECHTLUFT J; BIEBEL O; BLOODWORTH IJ; BOCK P; BOSCH HM; BOUTEMEUR M; BRAIBANT S; BRIGHTTHOMAS P; BROWN RM; BUIJS A; BURCKHART HJ; BURGIN R; BURGARD C; 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; DIXIT MS; SILVA EDE; DUBOSCQ JE; DUCHOVNI E; DUCKECK G; DUERDOTH IP; DUNWOODY UC; EDWARDS JEG; ESTABROOKS PG; EVANS HG; FABBRI F; FABBRO B; FANTI M; FATH P; FIEDLER F; FIERRO M; FINCKEKEELER M; FISCHER HM; 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; HANSON GG; HANSROUL M; HAPKE M; HARGROVE CK; HART PA; HARTMANN C; HAUSCHILD M; HAWKES CM; HAWKINGS R; HEMINGWAY RJ; HERTEN G; HEUER RD; HILL JC; HILLIER SJ; HILSE T; HOBSON PR; HOCHMAN D; HOMER RJ; HONMA AK; HOWARD R; HUGHESJONES RE; HUTCHCROFT DE; IGOKEMENES P; IMRIE DC; JAWAHERY A; JEFFREYS PW; JEREMIE H; JIMACK M; JOLY A; JONES M; JONES RWL; JOVANOVIC P; KARLEN D; KANZAKI J; KAWAGOE K; KAWAMOTO T; KEELER RK; KELLOGG RG; KENNEDY BW; KING BJ; 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; LANSKE D; LAUBER J; LAYTER JG; LEE AM; LEFEBVRE E; LELLOUCH D; LETTS J; LEVINSON L; LLOYD SL; LOEBINGER FK; LON GD; LORAZO B; LOSTY MJ; LOU XC; LUDWIG J; LUIG A; MALIK A; MANNELLI M; MARCELLINI S; MARKUS C; MARTIN AJ; MARTIN JP; MASHIMO T; MATTHEWS W; MATTIG P; MCKENNA J; MCKIGNEY EA; MCMAHON TJ; MCNAB AI; MEIJERS F; MENKE S; MERRITT FS; MES H; MICHELINI A; 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; 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; 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; SZYMANSKI P; TAFIROUT R; TARAS P; TAREM S; TECCHIO M; TEIXEIRADIAS P; TESCH N; THOMSON MA; VONTORNE E; TOWERS S; TSCHEULIN M; TSUKAMOTO T; TURCOT AS; TURNERWATSON MF; UTZAT P; VANKOOTEN R; VASSEUR G; VIKAS P; VINCTER M; WACKERLE F; 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; WLODEK T; WOLF G; WOTTON S; WYATT TR; YEKUTIELI G; ZACEK V; ZEUNER W; ZORN GT;
Indirizzi:
UNIV MANCHESTER,SCHUSTER LAB,DEPT PHYS MANCHESTER M13 9PL LANCS ENGLAND UNIV BIRMINGHAM,SCH PHYS & SPACE RES BIRMINGHAM B15 2TT W MIDLANDS ENGLAND UNIV BOLOGNA,DIPARTMENTO 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 ON K1S 5B6 CANADA CARLETON UNIV,CTR RES PARTICLE PHYS OTTAWA ON K1S 5B6 CANADA CERN,EUROPEAN ORG PARTICLE PHYS CH-1211 GENEVA 23 SWITZERLAND 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 LONDON UNIV COLL LONDON WC1E 6BT 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 CENS,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 KOBE UNIV KOBE 657 JAPAN BRUNEL UNIV UXBRIDGE UB8 3PH MIDDX ENGLAND WEIZMANN INST SCI,DEPT PARTICLE PHYS IL-76100 REHOVOT ISRAEL UNIV HAMBURG,DESY,INST EXPTL 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 TRIUMF VANCOUVER BC V6T 2A3 CANADA
Titolo Testata:
Zeitschrift fur Physik. C, Particles and fields
fascicolo: 3, volume: 67, anno: 1995,
pagine: 365 - 378
SICI:
0170-9739(1995)67:3<365:AMOTFA>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEAVY FLAVOR PRODUCTION; HADRONIC Z(0) DECAYS; LUND MONTE-CARLO; E+E ANNIHILATION; QUARK JETS; Z0; DETECTOR; FRAGMENTATION; B(B)OVER-BAR; ENERGIES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
37
Recensione:
Indirizzi per estratti:
Citazione:
R. Akers et al., "A MEASUREMENT OF THE FORWARD-BACKWARD ASYMMETRY OF E(-)-]B(B)OVER-BARBY APPLYING A JET CHARGE ALGORITHM TO LIFETIME TAGGED EVENTS()E()", Zeitschrift fur Physik. C, Particles and fields, 67(3), 1995, pp. 365-378

Abstract

The forward-backward asymmetry of e(+)e(-) --> Z(0) --> b ($) over bar b has been measured using approximately 2.15 million hadronic Z(0) decays collected at the LEP e+e(-) collider with the OPAL detector. A lifetime tag technique was used to select an enriched b ($) over bar b event sample. The measurement of the b ($) over bar b asymmetry was then performed using a jet algorithm to determine the direction of the primary Values of: A(FB)(b) = 0.062 +/- 0.034 +/- 0.002 - 0.082 Delta(Gamma (b ($) over bar b)/Gamma(had)) at root s = 89.52 GeV, A(FB)(b) = 0.0963 +/- 0.0067 +/- 0.0038 - 0.471 Delta(Gamma(b ($) over bar b)/Gamma(had) at root s = 91.25 GeV, A(FB)(b) = 0.172 +/- 0.0028 +/- 0.007 -0.855 Delta(Gamma(b ($) over bar b)/Gamma(had)) at root s = 92.94 GeV, were measured where, in each case, the first error is statistical, the second is systematic and the third term gives the variation due to a change Delta(Gamma(b ($) over bar b) /Gamma(had)) in the value of Gamma(b ($) over bar b)/Gamma(had) = 0.216 assumed. The dependence on the assumed charm asymmetry at the same energy is Delta(A(FB)(b))approximate to+0.07 Delta(A(FB)(c)). Assuming the Standard Model form for thecouplings, these measurements correspond to an effective weak mixing angle of: sin(2) theta(W)(eff,e) = 0.2313 +/- 0.0012 +/- 0.0006 givingM(top) = 196(-38-19)(+33+16) GeV/c(2) where the first error is statistical and the second is systematic. The Higgs mass assumed is 300 GeV/c(2). A variation in the assumed mass of the Higgs boson between 60 and 1000 GeV/c(2) corresponds to an uncertainty in sin(2) theta(W)(eff,e) of +/- 0.00006 and on M(top) of(-26)(+20) GeV/c(2).

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Documento generato il 05/12/20 alle ore 07:19:24