Measurement of the strong coupling constant using τ decays

6533b853fe1ef96bd12ac280

RESEARCH PRODUCT

Measurement of the strong coupling constant using τ decays

D. Buskulic D. Decamp C. Goy J.-p. Lees M.-n. Minard B. Mours B. Pietrzyk R. Alemany F. Ariztizabal P. Comas J.m. Crespo M. Delfino E. Fernandez M. Fernandez-bosman V. Gaitan Ll. Garrido T. Mattison A. Pacheco C. Padilla A. Pascual D. Creanza M. De Palma A. Farilla G. Iaselli G. Maggi M. Maggi S. Natali S. Nuzzo M. Quattromini A. Ranieri G. Raso F. Romano F. Ruggieri G. Selvaggi L. Silvestris P. Tempesta G. Zito Y. Chai H. Hu D. Huang X. Huang J. Lin T. Wang Y. Xie D. Xu R. Xu J. Zhang L. Zhang W. Zhao L.a.t. Bauerdick E. Blucher G. Bonvicini J. Boudreau D. Casper H. Drevermann R.w. Forty G. Ganis C. Gay R. Hagelberg J. Harvey S. Haywood J. Hilgart R. Jacobsen B. Jost J. Knobloch I. Lehraus T. Lohse A. Lusiani M. Martinez P. Mato H. Meinhard A. Minten A. Miotto R. Miquel H.-g. Moser P. Palazzi J.a. Perlas J.-f. Pusztaszeri F. Ranjard G. Redlinger L. Rolandi J. Rothberg T. Ruan M. Saich D. Schlatter M. Schmelling F. Sefkow W. Tejessy H. Wachsmuth W. Wiedenmann T. Wildish W. Witzeling J. Wotschack Z. Ajaltouni F. Badaud M. Bardadin-otwinowska R. El Fellous A. Falvard P. Gay C. Guicheney P. Henrard J. Jousset B. Michel J.-c. Montret D. Pallin P. Perret F. Podlyski J. Proriol F. Prulhière F. Saadi T. Fearnley J.d. Hansen J.r. Hansen P.h. Hansen R. Møllerud B.s. Nilsson I. Efthymiopoulos A. Kyriakis E. Simopoulou A. Vayaki K. Zachariadou J. Badier A. Blondel G. Bonneaud J.c. Brient G. Fouque S. Orteu A. Rougé M. Rumpf R. Tanaka M. Verderi H. Videau D.j. Candlin M.i. Parsons E. Veitch L. Moneta G. Parrini M. Corden C. Georgiopoulos M. Ikeda J. Lannutti D. Levinthal M. Mermikides L. Sawyer S. Wasserbaech A. Antonelli R. Baldini G. Bencivenni G. Bologna F. Bossi P. Campana G. Capon F. Cerutti V. Chiarella B. D'ettorre-piazzoli G. Felici P. Laurelli G. Mannocchi F. Murtas G.p. Murtas L. Passalacqua M. Pepe-altarelli P. Picchi P. Colrain I. Ten Have J.g. Lynch W. Maitland W.t. Morton C. Raine P. Reeves J.m. Scarr K. Smith M.g. Smith A.s. Thompson R.m. Turnbull B. Brandl O. Braun C. Geweniger P. Hanke V. Hepp E.e. Kluge Y. Maumary A. Putzer B. Rensch A. Stahl K. Tittel M. Wunsch A.t. Belk R. Beuselinck D.m. Binnie W. Cameron M. Cattaneo D.j. Colling P.j. Dornan S. Dugeay A.m. Greene J.f. Hassard N.m. Lieske J. Nash D.g. Payne M.j. Phillips J.k. Sedgbeer I.r. Tomalin A.g. Wright P. Girtler E. Kneringer D. Kuhn G. Rudolph C.k. Bowdery T.j. Brodbeck A.j. Finch F. Foster G. Hughes D. Jackson N.r. Keemer M. Nuttall A. Patel T. Sloan S.w. Snow E.p. Whelan K. Kleinknecht J. Raab B. Renk H.-g. Sander H. Schmidt F. Steeg S.m. Walther R. Wanke B. Wolf J.-j. Aubert A.m. Bencheikh C. Benchouk A. Bonissent J. Carr P. Coyle J. Drinkard F. Etienne D. Nicod S. Papalexiou P. Payre L. Roos D. Rousseau P. Schwemling M. Talby S. Adlung R. Assmann C. Bauer W. Blum D. Brown P. Cattaneo B. Dehning H. Dietl F. Dydak M. Frank A.w. Halley J. Lauber G. Lütjens G. Lutz W. Männer R. Richter H. Rotscheidt J. Schröder A.s. Schwarz R. Settles H. Seywerd U. Stierlin U. Stiegler R.st. Denis G. Wolf J. Boucrot O. Callot A. Cordier M. Davier L. Duflot J.-f. Grivaz Ph. Heusse D.e. Jaffe P. Janot D.w. Kim F. Le Diberder J. Lefrançois A.-m. Lutz M.-h. Schune J.-j. Veillet I. Videau Z. Zhang D. Abbaneo G. Bagliesi G. Batignani L. Bosisio U. Bottigli C. Bozzi G. Calderini M. Carpinelli M.a. Ciocci R. Dell'orso I. Ferrante F. Fidecaro L. Foà E. Focardi F. Forti A. Giassi M.a. Giorgi A. Gregorio F. Ligabue E.b. Mannelli P.s. Marrocchesi A. Messineo F. Palla G. Rizzo G. Sanguinetti P. Spagnolo J. Steinberger R. Tenchini G. Tonelli G. Triggiani C. Vannini A. Venturi P.g. Verdini J. Walsh A.p. Betteridge J.m. Carter M.g. Green P.v. March Ll.m. Mir T. Medcalf I.s. Quazi J.a. Strong L.r. West D.r. Botterill R.w. Clifft T.r. Edgecock M. Edwards S.m. Fisher T.j. Jones P.r. Norton D.p. Salmon J.c. Thompson B. Bloch-devaux P. Colas H. Duarte W. Kozanecki E. Lançon M.c. Lemaire E. Locci P. Perez F. Perrier J. Rander J.-f. Renardy A. Rosowsky A. Roussarie J.-p. Schuller J. Schwindling D. Si Mohand B. Vallage R.p. Johnson A.m. Litke G. Taylor J. Wear J.g. Ashman W. Babbage C.n. Booth C. Buttar R.e. Carney S. Cartwright F. Combley F. Hatfield L.f. Thompson E. Barberio A. Böhrer S. Brandt G. Cowan C. Grupen G. Lutters F. Rivera U. Schäfer L. Smolik R. Della Marina G. Giannini B. Gobbo F. Ragusa L. Bellantoni W. Chen D. Cinabro J.s. Conway D.f. Cowen Z. Feng D.p.s. Ferguson Y.s. Gao J. Grahl J.l. Harton R.c. Jared B.w. Leclaire C. Lishka Y.b. Pan J.r. Pater Y. Saadi V. Sharma M. Schmitt Z.h. Shi A.m. Walsh F.v. Weber Sau Lan Wu X. Wu M. Zheng G. Zobernig

subject

Physics Coupling constant Nuclear and High Energy Physics Particle physics 010308 nuclear & particles physics Electron–positron annihilation Physics knowledge discovery High Energy Physics::Phenomenology Detector Hadron Strong interaction 01 natural sciences ALEPH Experiment Nuclear physics 0103 physical sciences [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]High Energy Physics::Experiment Invariant mass bibliographic databases 010306 general physics ALEPH experiment Particle Physics - Experiment Lepton

description

The strong coupling constant is determined from the leptonic branching ratios, the lifetime, and the invariant mass distribution of the hadronic 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 theoretical uncertainties, the latter evaluated in the framework of the Shifman, 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% . RI Perrier, Frederic/A-5953-2011; ANTONELLI, ANTONELLA/C-6238-2011; Buttar, Craig/D-3706-2011; Stahl, Achim/E-8846-2011; Passalacqua, Luca/F-5127-2011; Murtas, Fabrizio/B-5729-2012; St.Denis, Richard/C-8997-2012; Forti, Francesco/H-3035-2011; Ferrante, Isidoro/F-1017-2012

year	journal	country	edition	language
1993-01-01

10.1016/0370-2693(93)90212-z http://hdl.handle.net/11589/1554