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  - 
TY  - JOUR
A1  - Aad, G.
A1  - Abbott, B.
A1  - Abdallah, J.
A1  - Abdelalim, A. A.
A1  - Abdesselam, A.
T1  - Electron performance measurements with the ATLAS detector using the 2010 LHC proton-proton collision data
JF  - The European Physical Journal C
N2  - Detailed measurements of the electron performance of the ATLAS detector at the LHC are reported, using decays of the Z, W and J/ψ particles. Data collected in 2010 at s√=7 TeV are used, corresponding to an integrated luminosity of almost 40 pb\(^{−1}\). The inter-alignment of the inner detector and the electromagnetic calorimeter, the determination of the electron energy scale and resolution, and the performance in terms of response uniformity and linearity are discussed. The electron identification, reconstruction and trigger efficiencies, as well as the charge misidentification probability, are also presented.
KW  - electromagnetic calorimeter
KW  - Atlas detector
KW  - calorimeter
Y1  - 2012
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-127313
VL  - 72
IS  - 1909
ER  -