MEASUREMENT OF THE STRONG-COUPLING CONSTANT USING TAU-DECAYS

Authors
BUSKULIC D DECAMP D GOY C LEES JP MINARD MN MOURS B PIETRZYK B ALEMANY R ARIZTIZABAL F COMAS P CRESPO JM DELFINO M FERNANDEZ E FERNANDEZBOSMAN M GAITAN V GARRIDO L MATTISON T PACHECO A PADILLA C PASCUAL A CREANZA D DEPALMA M FARILLA A IASELLI G MAGGI G MAGGI M NATALI S NUZZO S QUATTROMINI M RANIERI A RASO G ROMANO F RUGGIERI F SELVAGGI G SILVESTRIS L TEMPESTA P ZITO G CHAI Y HU H HUANG D HUANG X LIN J WANG T XIE Y XU D XU R ZHANG J ZHANG L ZHAO W BAUERDICK LAT BLUCHER E BONVICINI G BOUDREAU J CASPER D DREVERMANN H FORTY RW GANIS G GAY C HAGELBERG R HARVEY J HAYWOOD S HILGART J JACOBSEN R JOST B KNOBLOCH J LEHRAUS I LOHSE T LUSIANI A MARTINEZ M MATO P MEINHARD H MINTEN A MIOTTO A MIQUEL R MOSER HG PALAZZI P PERLAS JA PUSZTASZERI JF RANJARD F REDLINGER G ROLANDI L ROTHBERG J RUAN T SAICH M SCHLATTER D SCHMELLING M SEFKOW F TEJESSY W WACHSMUTH H WIEDENMANN W WILDISH T WITZELING W WOTSCHACK J AJALTOUNI Z BADAUD F BARDADINOTWINOWSKA M ELFELLOUS R FALVARD A GAY P GUICHENEY C HENRARD P JOUSSET J MICHEL B MONTRET JC PALLIN D PERRET P PODLYSKI F PRORIOL J PRULHIERE F SAADI F FEARNLEY T HANSEN JD HANSEN JR HANSEN PH MOLLERUD R NILSSON BS EFTHYMIOPOULOS I KYRIAKIS A SIMOPOULOU E VAYAKI A ZACHARIADOU K BADIER J BLONDEL A BONNEAUD G BRIENT JC FOUQUE G ORTEU S ROUGE A RUMPF M TANAKA R VERDERI M VIDEAU H CANDLIN DJ PARSONS MI VEITCH E MONETA L PARRINI G CORDEN M GEORGIOPOULOS C IKEDA M LANNUTTI J LEVINTHAL D MERMIKIDES M SAWYER L WASSERBAECH S ANTONELLI A BALDINI R BENCIVENNI G BOLOGNA G BOSSI F CAMPANA P CAPON G CERUTTI F CHIARELLA V DETTORREPIAZZOLI B FELICI G LAURELLI P MANNOCCHI G MURTAS F MURTAS GP PASSALACQUA L PEPEALTARELLI M PICCHI P COLRAIN P TENHAVE I LYNCH JG MAITLAND W MORTON WT RAINE C REEVES P SCARR JM SMITH K SMITH MG THOMPSON AS TURNBULL RM BRANDL B BRAUN O GEWENIGER C HANKE P HEPP V KLUGE EE MAUMARY Y PUTZER A RENSCH B STAHL A TITTEL K WUNSCH M BELK AT BEUSELINCK R BINNIE DM CAMERON W CATTANEO M COLLING DJ DORNAN PJ DUGEAY S GREENE AM HASSARD JF LIESKE NM NASH J PAYNE DG PHILLIPS MJ SEDGBEER JK TOMALIN IR WRIGHT AG GIRTLER P KNERINGER E KUHN D RUDOLPH G BOWDERY CK BRODBECK TJ FINCH AJ FOSTER F HUGHES G JACKSON D KEEMER NR NUTTALL M PATEL A SLOAN T SNOW SW WHELAN EP KLEINKNECHT K RAAB J RENK B SANDER HG SCHMIDT H STEEG F WALTHER SM WANKE R WOLF B AUBERT JJ BENCHEIKH AM BENCHOUK C BONISSENT A CARR J COYLE P DRINKARD J ETIENNE F NICOD D PAPALEXIOU S PAYRE P ROOS L ROUSSEAU D SCHWEMLING P TALBY M ADLUNG S ASSMANN R BAUER C BLUM W BROWN D CATTANEO P DEHNING B DIETL H DYDAK F FRANK M HALLEY AW LAUBER J LUTJENS G LUTZ G MANNER W RICHTER R ROTSCHEIDT H SCHRODER J SCHWARZ AS SETTLES R SEYWERD H STIERLIN U STIEGLER U STDENIS R WOLF G BOUCROT J CALLOT O CORDIER A DAVIER M DUFLOT L GRIVAZ JF HEUSSE P JAFFE DE JANOT P KIM DW LEDIBERDER F LEFRANCOIS J LUTZ AM SCHUNE MH VEILLET JJ VIDEAU I ZHANG Z ABBANEO D BAGLIESI G BATIGNANI G BOSISIO L BOTTIGLI U BOZZI C CALDERINI G CARPINELLI M CIOCCI MA DELLORSO R FERRANTE I FIDECARO F FOA L FOCARDI E FORTI F GIASSI A GIORGI MA GREGORIO A LIGABUE F MANNELLI EB MARROCCHESI PS MESSINEO A PALLA F RIZZO G SANGUINETTI G SPAGNOLO P STEINBERGER J TENCHINI R TONELLI G TRIGGIANI G VANNINI C VENTURI A VERDINI PG WALSH J BETTERIDGE AP CARTER JM GREEN MG MARCH PV MIR LM MEDCALF T QUAZI IS STRONG JA WEST LR BOTTERILL DR CLIFFT RW EDGECOCK TR EDWARDS M FISHER SM JONES TJ NORTON PR SALMON DP THOMPSON JC BLOCHDEVAUX B COLAS P DUARTE H KOZANECKI W LANCON E LEMAIRE MC LOCCI E PEREZ P PERRIER F RANDER J RENARDY JF ROSOWSKY A ROUSSARIE A SCHULLER JP SCHWINDLING J MOHAND DS VALLAGE B JOHNSON RP LITKE AM TAYLOR G WEAR J ASHMAN JG BABBAGE W BOOTH CN BUTTAR C CARNEY RE CARTWRIGHT S COMBLEY F HATFIELD F THOMPSON LF BARBERIO E BOHRER A BRANDT S COWAN G GRUPEN C LUTTERS G RIVERA F SCHAFER U SMOLIK L DELLAMARINA R GIANNINI G GOBBO B RAGUSA F BELLANTONI L CHEN W CINABRO D CONWAY JS COWEN DF FENG Z FERGUSON DPS GAO YS GRAHL J HARTON JL JARED RC LECLAIRE BW LISHKA C PAN YB PATER JR SAADI Y SHARMA V SCHMITT M SHI ZH WALSH AM WEBER FV WU SL WU X ZHENG M ZOBERNIG G
Citation
D. Buskulic et al., MEASUREMENT OF THE STRONG-COUPLING CONSTANT USING TAU-DECAYS, Physics letters. Section B, 307(1-2), 1993, pp. 209-220
Citations number
49
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
307
Issue
1-2
Year of publication
1993
Pages
209 - 220
Database
ISI
SICI code
0370-2693(1993)307:1-2<209:MOTSCU>2.0.ZU;2-3
Abstract
The strong coupling constant is determined from the leptonic branching ratios, the lifetime, and the invariant mass distribution of the hadr onic final state of the tau lepton, using data accumulated at LEP with the ALEPH detector. The strong coupling constant measurement, alpha(s ), (m(tau)2) = 0.330 +/-0.046, evolved to the Z mass, yields alpha(s)( M(Z)2) = 0. 1 18 +/- 0.005. The error includes experimental and theore tical uncertainties, the latter evaluated in the framework of the Shif man, Vainshtein and Zakharov (SVZ) approach. The method allows the non -perturbative contribution to the hadronic decay rate to be determined to be 0.3 +/- 0.5% .