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Short description.

Physics Motivation: measure Higgs Yukawa coupling to muons, which provides useful test for ratio of Yukawa coupling between 2nd/3rd generation leptons (with H\tau \tau); between 2nd generation lepton/quark (with Hcc).

Search Channel: e^+e^- → \nu \overline{\nu} H with H→\mu ^+ \mu ^- at \sqrt{s} of 500 GeV.

Detector Benchmark: very sensitive to high momentum resolution/tracking efficiency, algorithm for isolated lepton tagging.

Two different works are ongoing or finish in soon.

  1. Work using DBD-world samples: explored at \sqrt{s} of 250/500 GeV, left-/right-handed beam polarization, two processes of e^+e^- \to q\overline{q}H and e^+ e^- \to \nu \overline{\nu} H 
  2. Work using IDR-world samples: written in above

Main observables.

final observable: precision on the cross section times branching ratio \sigma \times \mathrm{BR}(H \to \mu ^+ \mu ^-), branching ratio of H \to \mu ^+ \mu ^-.

intermediate observables: track momentum resolutions.

IDR note.

You can see my private overleaf project from here. The contents are only IDR-world.

People.

Shin-ichi Kawada (DESY)

Reviewed by Ivanka Bozovic and Filip Zarnecki

References.

GitHub repository: LINK

(1) DBD-world references

Branching ratio measurement of h \to \mu ^+ \mu ^- at the ILC [Talk at LCWS2017]

Impact of Momentum Resolution on \mathrm{BR}(h \to \mu ^+ \mu ^-) Measurement [Talk at ILD Meeting 2018]

Branching ratio measurement of h \to \mu ^+ \mu ^- at the ILC [Talk at ALCW2018]

Prospects of measuring Higgs boson decays into muon pairs at the ILC [Talk at LCWS2018]

Shin-ichi Kawada, Jenny List, Mikael Berggren, "Branching ratio measurement of h \to \mu ^+ \mu ^- at the ILC" (LCWS2017 proceedings) [LINK]

Shin-ichi Kawada, Jenny List, Mikael Berggren, "Prospects of measuring Higgs boson decays into muon pairs at the ILC" (LCWS2018 proceedings) [LINK]

(2) IDR-world references

Talk at Wednesday ILD Analysis/Software Meeting [2018Oct10, 2018Nov21, 2019Jan30]

Status Report: h \to \mu ^+ \mu ^- Benchmark [Talk at ILD Benchmarking Days]

Status Report: h \to \mu ^+ \mu ^- Benchmark [Talk at ILD Benchmarking Days II]

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