MEASUREMENT OF THE MICHEL PARAMETERS AND THE AVERAGE TAU-NEUTRINO HELICITY FROM TAU-DECAYS AT LEP

Authors
ACCIARRI M ADRIANI O AGUILARBENITEZ M AHLEN S ALCARAZ J ALEMANNI G ALLABY J ALOISIO A ALVIGGI MG AMBROSI G ANDERHUB H ANDREEV VP ANGELESCU T ANSELMO F AREFIEV A AZEMOON T AZIZ T BAGNAIA P BAKSAY L BALL RC BANERJEE S BANERJEE S BANICZ K BARCZYK A BARILLERE R BARONE L BARTALINI P BASCHIROTTO A BASILE M BATTISTON R BAY A BECATTINI F BECKER U BEHNER F BERDUGO J BERGES P BERTUCCI B BETEV BL BHATTACHARYA S BIASINI M BILAND A BILEI GM BLAISING JJ BLYTH SC BOBBINK GJ BOCK R BOHM A BOLDIZSAR L BORGIA B BOURILKOV D BOURQUIN M BOUTIGNY D BRACCINI S BRANSON JG BRIGLJEVIC V BROCK IC BUFFINI A BUIJS A BURGER JD BURGER WJ BUSENITZ J CAI XD CAMPANELLI M CAPELL M ROMEO GC CARLINO G CARTACCI AM CASAUS J CASTELLINI G CAVALLARI F CAVALLO N CECCHI C CERRADA M CESARONI F CHAMIZO M CHANG YH CHATURVEDI UK CHEMARIN M CHEN A CHEN G CHEN GM CHEN HF CHEN HS CHEN M CHIEFARI G CHIEN CY CIFARELLI L CINDOLO F CIVININI C CLARE I CLARE R COIGNET G COLIJN AP COLINO N COSTANTINI S COTOROBAI F DELACRUZ B CSILLING A DAI TS DALESSANDRO R DEASMUNDIS R DEGRE A DEITERS K DENES P DENOTARISTEFANI F DIEMOZ M VANDIERENDONCK D DILODOVICO F DIONISI C DITTMAR M DOMINGUEZ A DORIA A DOVA MT DRAGO E DUCHESNEAU D DUINKER P DURAN I EASO S ELMAMOUNI H ENGLER A EPPLING FJ ERNE FC EXTERMANN P FABRE M FACCINI R FALAGAN MA FALCIANO S FAVARA A FAY J FEDIN O FELCINI M FERGUSON T FERRONI F FESEFELDT H FIANDRINI E FIELD JH FILTHAUT F FISHER PH FISK I FORCONI G FREDJ L FREUDENREICH K FURETTA C GALAKTIONOV Y GANGULI SN GARCIAABIA P GATAULLIN M GAU SS GENTILE S GERALD J GHEORDANESCU N GIAGU S GOLDFARB S GOLDSTEIN J GONG ZF GOUGAS A GRATTA G GRUENEWALD MW VANGULIK R GUPTA VK GURTU A GUTAY LJ HAAS D HARTMANN B HASAN A HATZIFOTIADOU D HEBBEKER T HERVE A HIDAS P HIRSCHFELDER J VANHOEK WC HOFER H HOORANI H HOU SR HU G IASHVILI I JIN BN JONES LW DEJONG P JOSAMUTUBERRIA I KASSER A KHAN RA KAMRAD D KAPUSTINSKY JS KARYOTAKIS Y KAUR M KIENZLEFOCACCI MN KIM D KIM DH KIM JK KIM SC KINNISON WW KIRKBY A KIRKBY D KIRKBY J KISS D KITTEL W KLIMENTOV A KONIG AC KOPP A KOROLKO I KOUTSENKO V KRAEMER RW KRENZ W KUNIN A LACENTRE P DEGUEVARA PL LANDI G LAPOINT C LASSILAPERINI K LAURIKAINEN P LAVORATO A LEBEAU M LEBEDEV A LEBRUN P LECOMTE P LECOQ P LECOULTRE P LEE HJ LEGGETT C LEGOFF JM LEISTE R LEONARDI E LEVTCHENKO P LI C LIN CH LIN WT LINDE FL LISTA L LIU ZA LOHMANN W LONGO E LU W LU YS LUBELSMEYER K LUCI C LUCKEY D LUMINARI L LUSTERMANN W MA WG MAITY M MAJUMDER G MALGERI L MALININ A MANA C MANGEOL D MARCHESINI P MARIAN G MARIN A MARTIN JP MARZANO F MASSARO GGG MAZUMDAR K MELE S MEROLA L MESCHINI M METZGER WJ VONDERMEY M MI Y MIGANI D MIHUL A VANMIL AJW MILCENT H MIRABELLI G MNICH J MOLNAR P MONTELEONI B MOORE R MOULIK T MOUNT R MUANZA GS MUHEIM F MUIJS AJM NAHN S NAPOLITANO M NESSITEDALDI F NEWMAN H NIESSEN T NIPPE A NISATI A NOWAK H OH YD ORGANTINI G OSTONEN R PALOMARES C PANDOULAS D PAOLETTI S PAOLUCCI P PARK HK PARK IH PASCALE G PASSALEVA G PATRICELLI S PAUL T PAULUZZI M PAUS C PAUSS F PEACH D PEDACE M PEI YJ PENSOTTI S PERRETGALLIX D PETERSEN B PETRAK S PEVSNER A PICCOLO D PIERI M PIROUE PA PISTOLESI E PLYASKIN V POHL M POJIDAEV V POSTEMA H POTHIER J PRODUIT N PROKOFIEV D QUARTIERI J RAHALCALLOT G RAJA N RANCOITA PG RATTAGGI M RAVEN G RAZIS P REN D RESCIGNO M REUCROFT S VANRHEE T RIEMANN S RILES K RIND O ROBOHM A RODIN J ROE BP ROMERO L ROSIERLEES S ROSSELET P ROTH S RUBIO JA RUSCHMEIER D RYKACZEWSKI H SAKAR S SALICIO J SANCHEZ E SANDERS MP SARAKINOS ME SAUVAGE G SCHAFER C SCHEGELSKY V SCHMIDTKAERST S SCHMITZ D SCHNEEGANS M SCHOLZ N SCHOPPER H SCHOTANUS DJ SCHWENKE J SCHWERING G SCIACCA C SCIARRINO D SERVOLI L SHEVCHENKO S SHIVAROV N SHOUTKO V SHUKLA J SHUMILOV E SHVOROB A SIEDENBURG T SON D SOULIMOV V SMITH B SPILLANTINI P STEUER M STICKLAND DP STONE H STOYANOV B STRAESSNER A SUDHAKAR K SULTANOV G SUN LZ SUSINNO FG SUTER H SWAIN JD TANG XW TAUSCHER L TAYLOR L TIMMERMANS C TING SCC TING SM TONWAR SC TOTH J TULLY C TUNG KL UCHIDA Y ULBRICHT J VALENTE E VESZTERGOMBI G VETLITSKY I VIERTEL G VILLA S VIVARGENT M VLACHOS S VOGEL H VOGT H VOROBIEV I VOROBYOV AA VORVOLAKOS A WADHWA M WALLRAFF W WANG JC WANG XL WANG ZM WEBER A WU SX WYNHOFF S XU J XU ZZ YANG BZ YANG CG YANG HJ YANG M YE JB YEH SC YOU JM ZALITE A ZALITE Y ZEMP P ZENG Y ZHANG ZP ZHOU B ZHOU Y ZHU GY ZHU RY ZICHICHI A ZIEGLER F ZILIZI G
Citation
M. Acciarri et al., MEASUREMENT OF THE MICHEL PARAMETERS AND THE AVERAGE TAU-NEUTRINO HELICITY FROM TAU-DECAYS AT LEP, Physics letters. Section B, 438(3-4), 1998, pp. 405-416
Citations number
27
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
438
Issue
3-4
Year of publication
1998
Pages
405 - 416
Database
ISI
SICI code
0370-2693(1998)438:3-4<405:MOTMPA>2.0.ZU;2-D
Abstract
Four of the Michel parameters and the average tau-neutrino helicity ha ve been measured by analysing tan decay spectra in 147 pb(-1) of data collected by the L3 detector. The decays tau(-) --> e(-)nu(tau)<(nu)ov er bar>(e), tau(-) --> mu(-)nu(tau)<(nu)over bar>(mu), tau(-) --> pi(- )nu(tau), tau(-) --> rho(-)nu(tau) and their charge conjugates were co nsidered. The results: rho = 0.762 +/- 0.035, eta = 0.27 +/- 0.14, xi = 0.70 +/- 0.16, xi delta = 0.70 +/- 0.11 and xi(h) = -1.032 +/- 0.031 are consistent with a V-A structure for the weak charged current and lepton universality, (C) 1998 Elsevier Science B.V. All rights reserve d.