Measurement of τ Polarization in W→τν Decays with the ATLAS Detector in pp Collisions at s=7TeV

Nuclear physics. B, Proceedings, supplements Pub Date : 2014-08-01 DOI:10.1016/j.nuclphysbps.2014.09.044

Zofia Czyczula, ATLAS collaboration

引用次数: 5

Abstract

In this proceedings, the first measurement of τ polarization at a hadron collider is presented. The method for extracting the τ polarization is independent of the mode of τ production and can be applied to the characterization of new phenomena at the Large Hadron Collider. The method has been applied to $W \to τ ν$ decays and the measured value of $P_{τ} = - 1.06 \pm 0.04 {(stat)}_{- 0.07}^{+ 0.05} (syst)$ is in agreement with the Standard Model prediction.

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用ATLAS探测器在s=7TeV的pp碰撞中测量W→τν衰变中的τ偏振

本文首次在强子对撞机上测量了τ偏振。提取τ极化的方法不依赖于τ产生的模式，可以应用于大型强子对撞机新现象的表征。将该方法应用于W→τν衰变，Pτ= - 1.06±0.04(stat) - 0.07+0.05(syst)的实测值与标准模型预测一致。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear physics. B, Proceedings, supplements

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