Measurement of the transverse spin correlations in the decay Z → τ+τ-

6533b870fe1ef96bd12d0555

RESEARCH PRODUCT

Measurement of the transverse spin correlations in the decay Z → τ+τ-

R Barate D Buskulic D Decamp P Ghez C Goy J.-p Lees A Lucotte M.-n Minard J.-y Nief B Pietrzyk M.p Casado M Chmeissani P Comas J.m Crespo M Delfino E Fernandez M Fernandez-bosman Ll Garrido A Juste M Martinez R Miquel Ll.m Mir S Orteu C Padilla I.c Park A Pascual J.a Perlas I Riu F Sanchez F Teubert A Colaleo D Creanza M De Palma G Gelao G Iaselli G Maggi M Maggi N Marinelli S Nuzzo A Ranieri G Raso F Ruggieri G Selvaggi L Silvestris P Tempesta A Tricomi G Zito X Huang J Lin Q Ouyang T Wang Y Xie R Xu S Xue J Zhang L Zhang W Zhao D Abbaneo R Alemany U Becker A.o Bazarko P Bright-thomas M Cattaneo F Cerutti G Dissertori H Drevermann R.w Forty M Frank R Hagelberg J.b Hansen J Harvey P Janot B Jost E Kneringer J Knobloch I Lehraus G Lutters P Mato A Minten L Moneta A Pacheco J.-f Pusztaszeri F Ranjard G Rizzo L Rolandi D Rousseau D Schlatter M Schmitt O Schneider W Tejessy I.r Tomalin H Wachsmuth A Wagner Z Ajaltouni A Barrès C Boyer A Falvard C Ferdi P Gay C Guicheney P Henrard J Jousset B Michel S Monteil J-c Montret D Pallin P Perret F Podlyski J Proriol P Rosnet J.-m Rossignol T Fearnley J.d Hansen J.r Hansen P.h Hansen B.s Nilsson B Rensch A Wäänänen G Daskalakis A Kyriakis C Markou E Simopoulou I Siotis A Vayaki A Blondel G Bonneaud J.c Brient P Bourdon A Rougé M Rumpf A Valassi M Verderi H Videau D.j Candlin M.i Parsons E Focardi G Parrini K Zachariadou M Corden C Georgiopoulos D.e Jaffe A Antonelli G Bencivenni G Bologna F Bossi P Campana G Capon D Casper V Chiarella G Felici P Laurelli G Mannocchi F Murtas G.p Murtas L Passalacqua M Pepe-altarelli L Curtis S.j Dorris A.w Halley I.g Knowles J.g Lynch V O'shea C Raine J.m Scarr K Smith P Teixeira-dias A.s Thompson E Thomson F Thomson R.m Turnbull C Geweniger G Graefe P Hanke G Hansper V Hepp E.e Kluge A Putzer M Schmidt J Sommer K Tittel S Werner M Wunsch R Beuselinck D.m Binnie W Cameron P.j Dornan M Girone S Goodsir E.b Martin A Moutoussi J Nash J.k Sedgbeer P Spagnolo A.m Stacey M.d Williams V.m Ghete P Girtler D Kuhn G Rudolph A.p Betteridge C.k Bowdery P Colrain G Crawford A.j Finch F Foster G Hughes R.w Jones T Sloan M.i Williams A Galla I Giehl A.m Greene C Hoffmann K Jakobs K Kleinknecht G Quast B Renk E Rohne H.-g Sander P Van Gemmeren C Zeitnitz J.j Aubert C Benchouk A Bonissent G Bujosa D Calvet J Carr P Coyle C Diaconu F Etienne N Konstantinidis O Leroy F Motsch P Payre M Talby A Sadouki M Thulasidas K Trabelsi M Aleppo F Ragusa R Berlich W Blum V Büscher H Dietl G Ganis C Gotzhein H Kroba G Lütjens G Lutz W Männer H.-g Moser R Richter A Rosado-schlosser S Schael R Settles H Seywerd R.st Denis H Stenzel W Wiedenmann G Wolf J Boucrot O Callot S Chen Y Choi A Cordier M Davier L Duflot J.-f Grivaz Ph Heusse A Höcker A Jacholkowska M Jacquet D.w Kim F Le Diberder J Lefrançois A.-m Lutz I Nikolic M.-h Schune S Simion E Tournefier J.-j Veillet I Videau D Zerwas P Azzurri G Bagliesi G Batignani S Bettarini C Bozzi G Calderini M Carpinelli M.a Ciocci V Ciulli R Dell'orso R Fantechi I Ferrante L Foà F Forti A Giassi M.a Giorgi A Gregorio F Ligabue A Lusiani P.s Marrocchesi A Messineo F Palla G Sanguinetti A Sciabà J Steinberger R Tenchini G Tonelli C Vannini A Venturi P.g Verdini G.a Blair L.m Bryant J.t Chambers Y Gao M.g Green T Medcalf P Perrodo J.a Strong J.h Von Wimmersperg-toeller D.r Botterill R.w Clifft T.r Edgecock S Haywood P Maley P.r Norton J.c Thompson A.e Wright B Bloch-devaux P Colas S Emery W Kozanecki E Lançon M.c Lemaire E Locci P Perez J Rander J.-f Renardy A Roussarie J.-p Schuller J Schwindling A. Trabelsi B Vallage S.n Black J.h Dann R.p Johnson H.y Kim A.m Litke M.a Mcneil G Taylor C.n Booth R Boswell C.a.j Brew S Cartwright F Combley M.s Kelly M Lehto W.m Newton J Reeve L.f Thompson A Böhrer S Brandt G Cowan C Grupen P Saraiva L Smolik F Stephan M Apollonio L Bosisio R Della Marina G Giannini B Gobbo G Musolino J Rothberg S Wasserbaech S.r Armstrong E Charles P Elmer D.p.s Ferguson S González T.c Greening O.j Hayes H Hu S Jin P.a Mcnamara J.m Nachtman J Nielsen W Orejudos Y.b Pan Y Saadi I.j Scott J Walsh Sau Lan Wu X Wu J.m Yamartino G Zobernig

subject

Physics Nuclear and High Energy Physics Particle physics 010308 nuclear & particles physics Physics Electron–positron annihilation Polarization (waves)01 natural sciences Nuclear physics ALEPH Experiment Transverse plane 0103 physical sciences High Energy Physics::Experiment Astrophysics::Earth and Planetary Astrophysics Nuclear Experiment 010306 general physics ALEPH experiment Lepton

description

For tau leptons produced in e(+)e(-) --> tau(+)tau(-) interactions there are, in addition to the longitudinal spin correlations, two independent transverse spin correlations associated with the transverse (within the production plane) and normal (to the production plane) polarization components. A measurement of the transverse-transverse and transverse-normal tau spin correlations in the decay Z --> tau(+)tau(-), C-TT and C-TN, is presented based on the aplanarity angle of the decay products of both tau leptons. Using 80 pb(-1) of data collected by ALEPH on the peak of the Z resonance, the results are C-TT = 1.06 +/- 0.13(stat) +/- 0.05(syst), and C-TN = 0.08 +/- 0.13(stat) +/- 0.04(syst). These values are in agreement with the Standard Model predictions, C-TT = 0.99 and C-TN = -0.01. (C) 1997 Published by Elsevier Science B.V. RI ANTONELLI, ANTONELLA/C-6238-2011; Jones, Roger/H-5578-2011; Passalacqua, Luca/F-5127-2011; Murtas, Fabrizio/B-5729-2012; St.Denis, Richard/C-8997-2012; Sanchez, Federico/F-5809-2012; Forti, Francesco/H-3035-2011; Ferrante, Isidoro/F-1017-2012

year	journal	country	edition	language
1997-07-01

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