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arXiv · 1508.05675

Tau reconstruction methods at an electron-positron collider in the search for new physics

Jinmian Li·Anthony G. Williams
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Abstract

By exploiting the relatively long lifetime of the tau lepton, we propose several novel methods for searching for new physics at an electron-positron collider. We consider processes that involve final states consisting of a tau lepton pair plus two missing particles. The mass and spin of the new physics particles can be measured in 3-prong tau decays. The tau polarization, which reflects the coupling to new physics, can be measured from the $τ\to πν$ decay channel using the impact parameter distribution of the charged pion. We also discuss the corresponding backgrounds for these measurements, the next-to-leading order (NLO) effects, and the implications of finite detector resolution.

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Jinmian Li, Anthony G. Williams. 2016-03-25. Tau reconstruction methods at an electron-positron collider in the search for new physics. https://doi.org/10.1103/physrevd.93.075019

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