Measurement of the Higgs Boson Couplings and CP Structure Using Tau Leptons at the LHC

TL;DR

This paper reports on measurements of the Higgs boson couplings to tau leptons at the LHC, including tests of CP invariance in Higgs production and decay, using data from ATLAS and CMS at 7 and 8 TeV.

Contribution

It presents the first combined analysis of Higgs to tau tau decays with CP structure tests using LHC Run 1 data from ATLAS and CMS.

Findings

Evidence for Higgs to tau tau decay

Constraints on CP violation in Higgs interactions

Experimental methods for CP invariance testing

Abstract

Results on the $H\to\tau\tau$ measurements performed by the ATLAS and CMS collaborations with the pp collision data collected at the LHC at $\sqrt{s}=$7 and 8 TeV are presented. These include a test of CP invariance in the VBF Higgs boson production. Experimental challenges for the test of the CP invariance in the $H\to\tau\tau$ decays are also reviewed.