Full simulation study of the higgs branching ratio into tau lepton pairs at the ILC with √s = 500 GeV

Shin ichi Kawada, Keisuke Fujii, Taikan Suehara, Tohru Takahashi, Tomohiko Tanabe

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

We evaluate the expected measurement accuracy of the branching ratio of the Standard Model Higgs boson decaying into tau lepton pairs h → τ+τ at the ILC with a center-of-mass energy of √s = 500 GeV with a full simulation of the ILD detector. We assume a Higgs mass of Mh = 125 GeV, a branching ratio of BR(h → τ+τ) = 6.32 %, beam polarizations of P (e, e+) = (−0.8, +0.3), and an integrated luminosity of ∫ L dt = 500 fb−1. The Higgs-strahlung process e+e → Zh with Z → qq and the W W-fusion process e+e → ννh are expected to be the most sensitive channels at √s = 500 GeV. Using a multivariate analysis technique, we estimate the expected relative measurement accuracy of the branching ratio ∆(σ · BR)/(σ · BR) to be 4.7% and 7.4% for the qqh and ννh final states, respectively. The results are cross-checked using a cut-based analysis.

Original languageEnglish
Publication statusPublished - 2013
Event2013 International Workshop on Future Linear Colliders, LCWS 2013 - Tokyo, Japan
Duration: Nov 11 2013Nov 15 2013

Conference

Conference2013 International Workshop on Future Linear Colliders, LCWS 2013
CountryJapan
CityTokyo
Period11/11/1311/15/13

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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    Kawada, S. I., Fujii, K., Suehara, T., Takahashi, T., & Tanabe, T. (2013). Full simulation study of the higgs branching ratio into tau lepton pairs at the ILC with √s = 500 GeV. Paper presented at 2013 International Workshop on Future Linear Colliders, LCWS 2013, Tokyo, Japan.