A MEASUREMENT OF THE TAU-LEPTONIC BRANCHING FRACTIONS

Authors
ABREU P 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 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 BOUDINOV E BOUQUET B BOURDARIOS C BOWCOCK TJV BOZZO M BRANCHINI P BRAND KD BRENKE T BRENNER RA BRICMAN C BRILLAULT L BROWN RCA BRUCKMAN P BRUNET JM BUGGE L BURAN T BURGSMUELLER T BUSCHMANN P 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 CHAPKIN M 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 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 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 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 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 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 LOPEZ JM 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 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 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 PHILLIPS 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 SPONHOLZ P SQUARCIA S STANESCU C STAPNES S STAVITSKI I STEPANIAK K STICHELBAUT F STOCCHI A STRAUSS J 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 ULLALAND O UVAROV V VALENTI G VALLAZZA E VANDERVELDE C VANAPELDOORN GW VANDAM P VANDONINCK WK VANELDIK J
Citation
P. Abreu et al., A MEASUREMENT OF THE TAU-LEPTONIC BRANCHING FRACTIONS, Physics letters. Section B, 357(4), 1995, pp. 715-724
Citations number
7
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
357
Issue
4
Year of publication
1995
Pages
715 - 724
Database
ISI
SICI code
0370-2693(1995)357:4<715:AMOTTB>2.0.ZU;2-1
Abstract
A sample of 25000 Z(0) --> tau(-)tau(+) events collected by the DELPHI experiment at LEP in 1991 and 1992 is used to measure the leptonic br anching fractions of the tau lepton. The results are B(tau --> e nu<(n u)over bar>) = (17.51+/-0.39)% and B(tau --> mu nu<(nu)over bar>) = (1 7.02+/-0.31)%. The ratio of the muon and electron couplings to the wea k charged current is measured to be g(mu)/g(e) = 1.000+/-0.013, satisf ying e-mu universality. The average leptonic branching fraction correc ted to the value for a massless lepton, assuming e-mu universality, is found to be B(tau --> l nu<(nu)over bar>) = (17.50+/-0.25)%.