LIFETIME OF CHARGED AND NEUTRAL B-HADRONS USING EVENT TOPOLOGY

Authors
ADAM W ADYE T AGASI E AJINENKO I ALEKSAN R ALEKSEEV GD ALLPORT PP ALMEHED S ALVSVAAG SJ AMALDI U AMATO S ANDREAZZA A ANDRIEUX ML ANTILOGUS P ANYKEYEV V 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 BENVENUTI AC BERGGREN M BERTRAND D BIANCHI F BIGI M BILENKY MS BILLOIR P BLOCH D BLUME M BLYTH S BOCCI V BOLOGNESE T BONESINI M BONIVENTO W BOOTH PSL BORISOV G BOSIO C BOSWORTH S BOTNER O BOUQUET B BOURDARIOS C BOWCOCK TJV BOZZO M BRANCHINI P BRAND KD BRENNER RA 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 GIMENEZ MVC CATTAI A CAVALLO FR CERRITO L CHABAUD V CHARPENTIER P CHAUSSARD L CHAUVEAU J CHECCHIA P CHELKOV GA CHIERICI R CHLIAPNIKOV P CHOCHULA P CHOROWICZ V 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 DELAVAISSIERE C 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 EIGEN G EKELOF T EKSPONG G ELSING M ENGEL JP ERSHAIDAT N ERZEN B SANTO ME FALK E FASSOULIOTIS D FEINDT M FERRER A FILIPPAS TA FIRESTONE A FISCHER PA FOETH H FOKITIS E FONTANELLI F FORMENTI F FRANEK B FRENKIEL P FRIES DC FRODESEN AG FRUHWIRTH R FULDAQUENZER F FURSTENAU H FUSTER J GALLONI A GAMBA D GANDELMAN M GARCIA C GARCIA J GASPAR C GASPARINI U GAVILLET P GAZIS EN GELE D GERBER JP GIBBS M GILLESPIE D GOKIELI R GOLOB B GOPAL G GORN L GORSKI M GOUZ Y GRACCO V GRAZIANI E GROSDIDIER G GUNNARSSON P GUNTHER M GUY J HAEDINGER U HAHN F HAHN M HAHN S HAJDUK Z HALLGREN A HAMACHER K HAO W HARRIS FJ HEDBERG V HENRIQUES R HERNANDEZ JJ HERQUET P HERR H HESSING TL HIGON E HILKE HJ HILL TS HOLMGREN SO HOLT PJ HOLTHUIZEN D HOULDEN M HRUBEC J HUET K HULTQVIST K IOANNOU P JACKSON JN JACOBSSON R JALOCHA P JANIK R JARLSKOG G JARRY P JEANMARIE B JOHANSSON EK JONSSON L JONSSON P JORAM C 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 KURVINEN K LACASTA C LAKTINEH I LAMBLOT S LAMSA JW LANCERI L LANE DW LANGEFELD P LAPIN V LAST I LAUGIER JP LAUHAKANGAS R LEDER G LEDROIT F LEFEBURE V LEGAN CK LEITNER R LEMOIGNE Y LEMONNE J LENZEN G LEPELTIER V LESIAK T LIKO D LINDNER R LIPNIACKA A LIPPI I LOERSTAD B LOKAJICEK M LOKEN JG LOPEZFERNANDEZ A AGUERA MAL LOUKAS D LUTZ P LYONS L MACNAUGHTON J MAEHLUM G MAIO A MALYCHEV V MANDL F MARCO J MARECHAL B MARGONI M MARIN JC MARIOTTI C MARKOU A MARON T 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 MIRABITO L MITAROFF WA MJOERNMARK U MOA T MOELLER R MOENIG K MONGE MR MORETTINI P MUELLER H MUNDIM LM MURRAY WJ MURYN B MYATT G NARAGHI F NAVARRIA FL NAVAS S NEGRI P NEMECEK S NEUMANN W NEUMEISTER N NICOLAIDOU R NIELSEN BS NIEUWENHUIZEN M NIKOLAENKO V NISS P NOMEROTSKI A NORMAND A OBERSCHULTEBECKMANN W OBRAZTSOV V OLSHEVSKI AG ONOFRE A ORAVA R OSTERBERG K OURAOU A PAGANINI P PAGANONI M PAGES P PALKA H PAPADOPOULOU TD PAPE L PARKES C PARODI F PASSERI A PEGORARO M PERALTA L PERNEGGER H PERNICKA M PERROTTA A PETRIDOU C PETROLINI A PHILIPS HT PIANA G PIERRE F PIMENTA M PLASZCZYNSKI S PODOBRIN O POL ME POLOK G POROPAT P POZDNIAKOV V PREST M PRIVITERA P PUKHAEVA N 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 STEPANIAK K STICHELBAUT F STOCCHI A STRUB R STUGU B SZCZEKOWSKI M SZEPTYCKA M TABARELLI T TAVERNET JP TCHIKILEV O TILQUIN A TIMMERMANS J TKATCHEV LG TODOROV T TOET DZ TOMARADZE A TOME B TORTORA L TRANSTROMER G TREILLE D TRISCHUK W TRISTRAM G TROMBINI A TRONCON C TSIROU A TURLUER ML TYAPKIN IA TYNDEL M TZAMARIAS S UEBERSCHAER B UEBERSCHAER S ULLALAND O UVAROV V VALENTI G VALLAZZA E VELDE CV VANAPELDOORN GW VANDAM P VANDONINCK WK VANELDIK J VASSILOPOULOS N VEGNI G
Citation
W. Adam et al., LIFETIME OF CHARGED AND NEUTRAL B-HADRONS USING EVENT TOPOLOGY, Zeitschrift fur Physik. C, Particles and fields, 68(3), 1995, pp. 363-374
Citations number
17
Categorie Soggetti
Physics, Particles & Fields
Journal title
Zeitschrift fur Physik. C, Particles and fields → ACNP
ISSN journal
01709739
Volume
68
Issue
3
Year of publication
1995
Pages
363 - 374
Database
ISI
SICI code
0170-9739(1995)68:3<363:LOCANB>2.0.ZU;2-3
Abstract
The lifetimes of charged and neutral B hadrons have been measured usin g data collected by the DELPHI experiment at LEP between 1991 and 1993 , B hadrons are tagged as jets with a secondary vertex and the charge of the B candidate is taken to be the sum of the charges of the partic les in the secondary vertex. Approximately 1,434,000 multihadronic Z(0 ) decays yielded 1817 B hadron candidates. The B purity was estimated to be around 99.1 +/- 0.3%, and 83% (70%) of the events measured as ne utral (charged) came from neutral (charged) B's, The mean lifetimes of charged and neutral B hadrons were found to be 1.72 +/- 0.08 (stat.) +/- 0.06 (syst.) ps and 1.58 +/- 0.11 (stat.) +/- 0.09 (syst.) ps resp ectively. The ratio of their lifetimes, tau((charged))/tau((neutral)), was 1.09(-0.10)(+0.11) (stat.)+/-0.08 (syst.). By making assumptions about the B-s(0) and Lambda(b)(0) states, the B+ and B-0 meson life-ti mes were determined to be tau(B)+ = 1.72 +/- 0.08 (stat.) +/- 0.06 (sy st.) ps and tau(B)0 = 1.63 +/- 0.14 (stat.) +/- 0.13 (syst.) ps and th e ratio of their lifetimes was: tau(B)+/tau(B)0 = 1.06(-0.11)(+0.13) /- 0.10. The mean B lifetime was also deduced to be <tau(B)> = 1.64 +/ - 0.06 (stat.) +/- 0.04 (syst.) ps.