Study of the hγZ coupling using e⁺e^-\xrightarrowh γ at the ILC

2019/02/16 by Aoki, Yumi, Fujii, Keisuke, Jung, Sunghoon +3
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.1902.06029

Abstract

We study the e⁺e^-→ h γ process at the International Linear Collider (ILC) to probe new physics in the hγZ coupling. The study is performed at a center of mass energy of 250 GeV and is based on the full simulation of the International Large Detector (ILD). The expected signal significance is found to be 0.53 σ for an integrated luminosity of 2000 fb^-1 in the case of the standard model. The corresponding 95 % confidence level upper limit for the signal cross section is 1.08 fb for left-handed beam polarization.

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