Model Independent Determination of $HWW$ coupling and Higgs total width at ILC

Abstract

This article is based on the talk presented at the International Workshop on Future Linear Colliders (LCWS13) which held during November 11-15, 2013 at Tokyo, Japan. We present several analyses related to the Higgs total width study at ILC based on the full detector simulation of ILD, which are \eevvH followed by \Htobb and \HtoWW. The studies show that at $\unit{250}{GeV}$ we can determine the Higgs total width with a relative precision of 11% and the $HWW$ coupling with 4.8%, whereas at $\unit{500}{GeV}$ the expected precision can be significantly improved to 5% and 1.2% respectively, assuming the baseline integrated luminosities of ILC, which are $\unit{250}{fb^{-1}}$ @ $\unit{250}{GeV}$, $\unit{500}{fb^{-1}}$ @ $\unit{500}{GeV}$, and a beam polarization of $P(e^{-},e^{+})=(-80$. A new approach of removing pile-up particles based on multivariate method developed during those analyses is also presented.

arXiv commentTalk presented at the International Workshop on Future Linear Colliders (LCWS13), Tokyo, Japan, 11-15 November 2013; based on previous note LC-REP-2013-022

References in corpus (11)

• HDECAY: a Program for Higgs Boson Decays in the Standard Model and its Supersymmetric Extension
• WHIZARD: Simulating Multi-Particle Processes at LHC and ILC
• Particle Flow Calorimetry and the PandoraPFA Algorithm
• Constraining the Higgs boson width with ZZ production at the LHC
• The International Linear Collider
• Total Width of 125 GeV Higgs Boson
• Hadron production in gamma-gamma collisions as a background for e+e- linear colliders
• Higgs particles at future hadron and electron-positron colliders
• The LCFIVertex package: vertexing, flavour tagging and vertex charge reconstruction with an ILC vertex detector
• Evaluation of measurement accuracies of the Higgs boson branching fractions in the International Linear Collider
• HZ Recoil Mass and Cross Section Analysis in ILD

Cited by in corpus (8)

• A 96 GeV Higgs Boson in the N2HDM
• Top physics at high-energy lepton colliders
• Off-shell effects in Higgs processes at a linear collider and implications for the LHC
• Determining Higgs boson width at electron-positron colliders
• An N2HDM Solution for the possible 96 GeV Excess
• Optimizing Higgs factories by modifying the recoil mass
• Measurement of $\sigma (e^{+}{e}^{-}\to HZ)\times \mathcal{B}r(H\to Z{Z}^{\ast })$ at the 250 GeV ILC
• Optimising the ILC Setup: Physics Programme, Running Scenarios and Design Choices