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

研究成果: Contribution to conferencePaper査読

抄録

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.

本文言語英語
出版ステータス出版済み - 1 1 2013
イベント2013 International Workshop on Future Linear Colliders, LCWS 2013 - Tokyo, 日本
継続期間: 11 11 201311 15 2013

会議

会議2013 International Workshop on Future Linear Colliders, LCWS 2013
国/地域日本
CityTokyo
Period11/11/1311/15/13

All Science Journal Classification (ASJC) codes

  • 核物理学および高エネルギー物理学

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