Measurement of τ polarization in W →τν decays with the ATLAS detector in pp collisions at √s = 7 TeV

ATLAS Collaboration

doi:10.1140/epjc/s10052-012-2062-6

Measurement of τ polarization in W →τν decays with the ATLAS detector in pp collisions at √s = 7 TeV

ATLAS Collaboration

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Resumen

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.

Idioma original	Inglés
Número de artículo	2062
Publicación	European Physical Journal C
Volumen	72
N.º	7
DOI	https://doi.org/10.1140/epjc/s10052-012-2062-6
Estado	Publicada - 3 jul 2012
Publicado de forma externa	Sí

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title = "Measurement of τ polarization in W →τν decays with the ATLAS detector in pp collisions at √s = 7 TeV",

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.",

author = "G. Aad and B. Abbott and J. Abdallah and Khalek, \{S. Abdel\} and S. Kabana and \{ATLAS Collaboration\}",

note = "Publisher Copyright: {\textcopyright} 2012, CERN for the benefit of the ATLAS collaboration.",

year = "2012",

month = jul,

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doi = "10.1140/epjc/s10052-012-2062-6",

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T1 - Measurement of τ polarization in W →τν decays with the ATLAS detector in pp collisions at √s = 7 TeV

AU - Aad, G.

AU - Abbott, B.

AU - Abdallah, J.

AU - Khalek, S. Abdel

AU - Kabana, S.

AU - ATLAS Collaboration

PY - 2012/7/3

Y1 - 2012/7/3

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 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.

AB - 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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DO - 10.1140/epjc/s10052-012-2062-6

M3 - Article

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SN - 1434-6044

VL - 72

JO - European Physical Journal C

JF - European Physical Journal C

IS - 7

M1 - 2062

ER -

Measurement of τ polarization in W →τν decays with the ATLAS detector in pp collisions at √s = 7 TeV

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