TY  - JOUR
T1  - Measurement of τ polarization in W→τν decays with the ATLAS detector in pp collisions at s√=7 TeV
JF  - The European Physical Journal C
N2  - 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 P\(_τ\)=−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.
KW  - total systematic uncertainty
KW  - energy scale uncertainty
KW  - multijet background
KW  - electroweak background
KW  - jet energy
KW  - Monte Carlo methods
KW  - signal template
KW  - track momentum
KW  - calorimeter
KW  - detector track
KW  - transverse momentum
KW  - ATLAS detector
KW  - jet axis
KW  - multijet event
KW  - track multipilicty
Y1  - 2012
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-127807
VL  - 72
IS  - 2062
ER  -