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  • Measurement of tau polariza...
    Aad, G.; Albrand, S.; Andrieux, M.L.; Buat, Q.; Clement, B.; Collot, J.; Crépé-Renaudin, S.; Dechenaux, B.; Delemontex, T.; Delsart, P.A.; Donini, J.; Dzahini, Daniel; Genest, M.H.; Hostachy, J.Y.; Laisne, E.; Ledroit-Guillon, F.; Lleres, A.; Lucotte, A.; Malek, F.; Martin, P.; Polci, F.; Stark, J.; Sun, X.; Trocmé, B.; Wang, J.; Weydert, C.; Biscarat, C.; Cogneras, E.; Rahal, G.; Abdel Khalek, S.; Abreu, H.; Andari, N.; Arnault, C.; Augé, E.; Barrillon, P.; Benoit, M.; Binet, S.; Bourdarios, C.; de La Taille, C.; de Vivie de Regie, J.B.; Duflot, L.; Escalier, M.; Fayard, L.; Fournier, D.; Grivaz, J.-F.; Henrot-Versillé, S.; Hrivnac, J.; Iconomidou-Fayard, L.; Idarraga, J.; Kado, M.; Lorenzo Martinez, N.; Lounis, A.; Makovec, N.; Matricon, P.; Niedercorn, F.; Poggioli, L.; Puzo, P.; Renaud, A.; Rousseau, D.; Rybkin, G.; Sauvan, J.B.; Schaarschmidt, J.; Schaffer, A.C.; Scifo, E.; Serin, L.; Simion, S.; Tanaka, R.; Teinturier, M.; Veillet, J.J.; Vukotic, I.; Wicek, F.; Zerwas, D.; Zhang, Zhiqing; Aperio Bella, L.; Aubert, B.; Berger, N.; Colas, J.; Delmastro, M.; Di Ciaccio, L.; Doan, T.K.O.; Elles, S.; Goy, C.; Helary, L.; Hryn'Ova, T.; Jérémie, A.; Jézéquel, S.; Kataoka, M.; Labbe, J.; Lafaye, R.; Leveque, J.; Lombardo, V.P.; Massol, N.; Perrodo, P.; Petit, E.; Przysiezniak, H.; Richter-Was, E.; Sauvage, G.; Sauvan, E.; Schwoerer, M.; Todorov, T.

    The European physical journal. C, Particles and fields, 2012, Letnik: 72
    Journal Article

    In this paper, a measurement of tau polarization in W->taunu decays is presented. It is measured from the energies of the decay products in hadronic tau decays with a single final state charged particle. The data, corresponding to an integrated luminosity of 24 pb^-1, were collected by the ATLAS experiment at the Large Hadron Collider in 2010. The measured value of the tau polarization is Ptau = -1.06 +/- 0.04 (stat) + 0.05 (syst) - 0.07 (syst), in agreement with the Standard Model prediction, and is consistent with a physically allowed 95% CL interval -1,-0.91. Measurements of tau polarization have not previously been made at hadron colliders.