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unige:39874 
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Measurement of τ polarization in W -> τν decays with the ATLAS detector in pp collisions at √s=7 TeV |
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| Collaboration | With : Abdelalim Aly, Ahmed Aly / Alexandre, Gauthier / Backes, Moritz / Barone, Gaetano / Bell, Paul / Bell, William / Benhar Noccioli, Eleonora / Blondel, Alain / Bucci, Francesca / Clark, Allan Geoffrey / Dao, Valerio / Doglioni, Caterina / Ferrere, Didier / Gadomski, Szymon / Gonzalez Sevilla, Sergio / Goulette, Marc / Iacobucci, Giuseppe / La Rosa, Alessandro / Leger, Annie / Lister, Alison / Martin Dit Latour, Bertrand / Mermod, Philippe / Mora Herrera, Maria Clemencia Rosario / Nektarijevic, Snezana / Nikolics, Katalin / Pasztor, Arpad / Picazio, Attilio / Pohl, Martin / Rosbach, Kilian / Rosselet, Laurent / Wu, Xin | |
| Published in | European Physical Journal. C. 2012, vol. 72, no. 2062, p. 21 | |
| Abstract | In this paper, a measurement of τ polarization in W→τν decays is presented. It is measured from the energies of the decay products in hadronic τ 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 τ polarization is Pτ=−1.06±0.04 (stat)+0.05−0.07 (syst) , in agreement with the Standard Model prediction, and is consistent with a physically allowed 95 % CL interval [−1,−0.91]. Measurements of τ polarization have not previously been made at hadron colliders. | |
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Article (Published version) (1.5 MB) - Limited access to UNIGE Other version: http://link.springer.com/article/10.1140%2Fepjc%2Fs10052-012-2062-6 |
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| Citation (ISO format) | ATLAS COLLABORATION. Measurement of τ polarization in W -> τν decays with the ATLAS detector in pp collisions at √s=7 TeV. In: European Physical Journal. C, 2012, vol. 72, n° 2062, p. 21. https://archive-ouverte.unige.ch/unige:39874 |
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