MEASUREMENT OF GAMMA(B(B)OVER-BAR) GAMMA(HAD) USING IMPACT PARAMETER MEASUREMENTS AND LEPTON IDENTIFICATION/

Authors
ABREU P ADAM W ADYE T AGASI E AJINENKO I ALEKSAN R ALEKSEEV GD ALLPORT PP ALMEHED S ALMEIDA FML ALVSVAAG SJ AMALDI U AMATO S ANDREAZZA A ANDRIEUX ML ANTILOGUS P APEL WD ARNOUD Y ASMAN B AUGUSTIN JE AUGUSTINUS A BAILLON P BAMBADE P BARAO F BARATE R BARDIN DY BARKER GJ BARONCELLI A BARRING O BARRIO JA BARTL W BATES MJ BATTAGLIA M BAUBILLIER M BAUDOT J BECKS KH BEGALLI M BEILLIERE P BELOKOPYTOV Y BELTRAN P BENVENUTI AC BERGGREN M BERTRAND D BIANCHI F BIGI M BILENKY MS BILLOIR P BJARNE J BLOCH D BLUME M BLYTH S BOCCI V BOLOGNESE T BONESINI M BONIVENTO W BOOTH PSL BORISOV G BOSIO C BOSTJANCIC B BOSWORTH S BOTNER O BOUDINOV E BOUQUET B BOURDARIOS C BOWCOCK TJV BOZZO M BRANCHINI P BRAND KD BRENNER RA BRIAND H BRICMAN C BRILLAULT L BROWN RCA BRUCKMAN P BRUNET JM BUGGE L BURAN T BUYS A CACCIA M CALVI M ROZAS AJC CAMPORESI T CANALE V CANEPA M CANKOCAK K CAO F CARENA F CARRILHO P CARROLL L CASO C CASSIO V GIMENEZ MVC CATTAI A CAVALLO FR CERRITO L CHABAUD V CHAN A CHARPENTIER P CHAUSSARD L CHAUVEAU J CHECCHIA P CHELKOV GA CHILAPNIKOV P CHOCHULA P CHOROWICZ V CHRIN JTM CINDRO V COLLINS P CONTRERAS JL CONTRI R CORTINA E COSME G COSSUTTI F CRAWLEY HB CRENNELL D CROSETTI G MAESTRO JC CZELLAR S DAHLJENSEN E DAHM J DALMAGNE B DAM M DAMGAARD G DAUM A DAUNCEY PD DAVENPORT M DASILVA W DEFOIX C DELLARICCA G DELPIERRE P DEMARIA N DEANGELIS A DEBOECK H DEBOER W DEBRABANDERE S DECLERCQ C LASO MDMD VAISSIERE CD DELOTTO B DEMIN A DEPAULA L DESAINTJEAN C DIJKSTRA H DICIACCIO L DJAMA F DOLBEAU J DONSZELMANN M DOROBA K DRACOS M DREES J DREES KA DRIS M DUFOUR Y DUPONT F EDSALL D EHRET R EKELOF T EKSPONG G ELSING M ENGEL JP ERSHAIDAT N SANTO ME FASSOULIOTIS D FEINDT M FENYUK A FERRER A FILIPPAS TA FIRESTONE A FOETH H FOKITIS E FONTANELLI F FORMENTI F FOUSSET JL FRANEK B FRENKIEL P FRIES DC FRODESEN AG FRUHWIRTH R FULDAQUENZER F FURSTENAU H FUSTER J GAMBA D GANDELMAN M GARCIA C GARCIA J GASPAR C GASPARINI U GAVILLET P GAZIS EN GELE D GERBER JP GILLESPIE D GOKIELI R GOLOB B GOMEZ JJ CADENAS Y GOPAL G GORN L GORSKI M GRACCO V GRARD F GRAZIANI E GROSDIDIER G GUNNARSSON P GUY J HAEDINGER U HAHN F HAHN M HAHN S HAIDER S HAJDUK Z HAKANSSON A HALLGREN A HAMACHER K HAO W HARRIS FJ HEDBERG V HENRIQUES R HERNANDEZ JJ HERNANDO JA HERQUET P HERR H HESSING TL HIGON E HILKE HJ HILL TS HOLMGREN SO HOLT PJ HOLTHUIZEN D HONORE PF HOULDEN M HRUBEC J HUET K HULTQVIST K IOANNOU P IVERSEN PS JACKSON JN JACOBSSON R JALOCHA P JANIK R JARLSKOG G JARRY P JEANMARIE B JOHANSSON EK JONSSON L JUILLOT P KAISER M KALMUS G KAPUSTA F KARLSSON M KARVELAS E KATSANEVAS S KATSOUFIS EC KERANEN R KHOMENKO BA KHOVANSKI NN KING B KJAER NJ KLEIN H KLOVNING A KLUIT P KOEHNE JH KOENE B KOKKINIAS P KORATZINOS M KORCYL K KOSTIOUKHINE V KOURKOUMELIS C KOUZNETSOV O KRAMER PH KRAMMER M KREUTER C KROLIKOWSKI J KRONKVIST I KRUMSTEIN Z KRUPINSKI W KUBINEC P KUCEWICZ W KULKA K KURVINEN K LACASTA C LAKTINEH I LAMBROPOULOS C LAMSA JW LANCERI L LANGEFELD P LAPIN V LAST I LAUGIER JP LAUHAKANGAS R LEDROIT F LEFEBURE V LEITNER R LEMOIGNE Y LEMONNE J LENZEN G LEPELTIER V LESIAK T LEVY JM LIKO D LINDNER R LIPNIACKA A LIPPI I LOERSTAD B LOKAJICEK M LOKEN JG LOPEZFERNANDEZ A AGUERA MAL LOUKAS D LOZANO JJ LUTZ P LYONS L MAEHLUM G MAILLARD J MAIO A MALTEZOS A MALYCHEV V MANDL F MARCO J MARECHAL B MARGONI M MARIN JC MARIOTTI C MARKOU A MARON T MARTINEZRIVERO C MARTINEZVIDAL F GARCIA SMI MATORRAS F MATTEUZZI C MATTHIAE G MAZZUCATO M MCCUBBIN M MCKAY R MCNULTY R MEDBO J MERONI C MEYER WT MICHELOTTO M MIGLIORE E MIKULEC I MIRABITO L MITAROFF WA MJOERNMARK U MOA T MOELLER R MOENIG K MONGE MR MORETTINI P MUELLER H MURRAY WJ MURYN B MYATT G NARAGHI F NAVARRIA FL NAVAS S NEGRI P NEMECEK S NEUMANN W NEUMEISTER N NICOLAIDOU R NIELSEN BS NIKOLAENKO V NISS P NOMEROTSKI A NORMAND A OBERSCHULTEBECKMANN W OBRAZTSOV V OLSHEVSKI AG ORAVA R OSTERBERG K OURAOU A PAGANINI P PAGANONI M PAGES P PAIN R PALKA H PAPADOPOULOU TD PAPE L PARODI F PASSERI A PEGORARO M PENNANEN J PERALTA L PEREVOZCHIKOV V PERNEGGER H PERNICKA M PERROTTA A PETRIDOU C PETROLINI A PHILLIPS HT PIANA G PIERRE F PIMENTA M PLASZCZYNSKI S PODOBRIN O POL ME POLOK G POROPAT P POZDNIAKOV V PREST M PRIVITERA P PULLIA A RADOJICIC D RAGAZZI S RAHMANI H RAMES J RATOFF PN READ AL REALE M REBECCHI P REDAELLI NG REGLER M REID D RENTON PB RESVANIS LK RICHARD F RICHARDSON J RIDKY J RINAUDO G RIPP I ROMERO A RONCAGLIOLO I RONCHESE P ROOS L ROSENBERG EI ROSSO E ROUDEAU P ROVELLI T RUCKSTUHL W RUHLMANNKLEIDER V RUIZ A SAARIKKO H SACQUIN Y SADOVSKY A SAJOT G SALT J SANCHEZ J SANNINO M SCHNEIDER H SCHYNS MAE SCIOLLA G SCURI F SEDYKH Y SEGAR AM SEITZ A SEKULIN R SHELLARD RC SICCAMA I SIEGRIST P SIMONETTI S SIMONETTO F SISAKIAN AN SITAR B SKAALI TB SMADJA G SMIRNOV N SMIRNOVA O SMITH GR SOSNOWSKI R SOUZASANTOS D SPASSOV T SPIRITI E SQUARCIA S STAECK H STANESCU C STAPNES S STAVITSKI I STAVROPOULOS G STEPANIAK K STICHELBAUT F STOCCHI A STRAUSS J STRUB R STUGU B SZCZEKOWSKI M SZEPTYCKA M TABARELLI T TCHIKILEV O THEODOSIOU GE TILQUIN A TIMMERMANS J TKATCHEV LG TODOROV T TOET DZ TOMARADZE A TOME B TORASSA E TORTORA L TRANSTROMER G TREILLE D TRISCHUK W TRISTRAM G TROMBINI A TRONCON C TSIROU A TURLUER ML TUUVA T TYAPKIN IA TYNDEL M
Citation
P. Abreu et al., MEASUREMENT OF GAMMA(B(B)OVER-BAR) GAMMA(HAD) USING IMPACT PARAMETER MEASUREMENTS AND LEPTON IDENTIFICATION/, Zeitschrift fur Physik. C, Particles and fields, 66(3), 1995, pp. 323-339
Citations number
40
Categorie Soggetti
Physics, Particles & Fields
Journal title
Zeitschrift fur Physik. C, Particles and fields → ACNP
ISSN journal
01709739
Volume
66
Issue
3
Year of publication
1995
Pages
323 - 339
Database
ISI
SICI code
0170-9739(1995)66:3<323:MOGGUI>2.0.ZU;2-3
Abstract
The partial decay width of the Z to b (b) over bar quark pairs has bee n measured by the DELPHI detector at LEP. b-hadrons, containing b-quar ks, were tagged by leptons with high transverse momentum relative to t he hadron or by tracks with large impact parameters to the primary ver tex. The ratio of the numbers of events with a single such tag to thos e with two tags was used to estimate the efficiency of the method and to reduce the systematic uncertainty. Combining all methods, the value : [GRAPHICS] was found, where the third error corresponds to a +/-8% u ncertainty on the c (c) over bar production width. A maximum likelihoo d fit to the single and di-lepton distributions gave the branching fra ction of the decays of b-quarks to leptons as: [GRAPHICS]