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Short description.

Measurement of Higgs coupling to heavy quarks (Higgs decay to gluons is mediated by heavy quark loops.) 

These studies were previously done focused on sqrt(s)=250 GeV with ZH and Z→ll.
For this study at 500 GeV, the study should at least be done with nu-nu-H (WW-fusion and ZH) which is a clean experimental benchmark.
(For physics the ZH channel with Z→qq  would also be worth studying as it is likely the most powerful for physics and
at 500 GeV benefits from the relatively unambiguous jet pairing).

Main observables.

ΔBR(H→bbar, ccbar, gg)/BR from Δ(σ*BR)/(σ*BR) and Δσ/σ measurements.

Control variables.

b-tag, c-tag, JER, M_H

People.

Masakazu Kurata, Ryo Yonamine

Referees.

Hiroaki Ono, Frank Simon

Git repository.

https://github.com/ILDAnaSoft/ILDbench_Hbbccgg

IDR analysis note on Overleaf

https://overleaf.com/read/bkhrbnxsckjm

Candidate plots for IDR

Update plots/code at 2019-11-28

IDRplot6.epsIDRplot6.CIDRplot5.epsIDRplot5.CIDRplot4.epsIDRplot4.CIDRplot3.epsIDRplot3.CIDRplot2.epsIDRplot2.CIDRplot1.eps

Update 2019-05-14

IDRplot1.CIDRplot2.CIDRplot3.CIDRplot4.CIDRplot5.C

Source of the plots

Updated 2019-11-28

vars_histograms_l_m08p03.root

makeIDRplot.cc

vars_histograms_s_m08p03.root

References.

H. Ono, A. Miyamoto, "Evaluation of measurement accuracies of the Higgs boson branching fractions in the International Linear Collider", https://arxiv.org/abs/1207.0300

H. Ono, "Higgs branching ratio study for DBD detector benchmarking in ILD", http://inspirehep.net/record/1475550/files/1238328_203-223.pdf

M. Kurata, presentaion at Benchmarking Days, https://agenda.linearcollider.org/event/8011/contributions/42069/





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