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

The ATLAS Collaboration

研究成果: Article査読

24 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号2062
ジャーナルEuropean Physical Journal C
72
7
DOI
出版ステータスPublished - 2012 7 3

ASJC Scopus subject areas

  • 工学(その他)
  • 物理学および天文学(その他)

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