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

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 - Jan 1 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

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leptons
Higgs bosons
center of mass
simulation
fusion
luminosity
detectors
polarization
estimates
energy

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

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.

Full simulation study of the higgs branching ratio into tau lepton pairs at the ILC with √s = 500 GeV. / Kawada, Shin ichi; Fujii, Keisuke; Suehara, Taikan; Takahashi, Tohru; Tanabe, Tomohiko.

2013. Paper presented at 2013 International Workshop on Future Linear Colliders, LCWS 2013, Tokyo, Japan.

Research output: Contribution to conferencePaper

Kawada, SI, 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, 11/11/13 - 11/15/13.
Kawada SI, Fujii K, Suehara T, Takahashi T, Tanabe T. Full simulation study of the higgs branching ratio into tau lepton pairs at the ILC with √s = 500 GeV. 2013. Paper presented at 2013 International Workshop on Future Linear Colliders, LCWS 2013, Tokyo, Japan.
Kawada, Shin ichi ; Fujii, Keisuke ; Suehara, Taikan ; Takahashi, Tohru ; Tanabe, Tomohiko. / 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.
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