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Study of the hγ Z coupling using e^+e^-xrightarrow{}h γ at the ILC

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arxiv 1902.06029 v1 pith:VKVZY3UQ submitted 2019-02-16 hep-ex hep-ph

Study of the $h\gamma Z$ coupling using $e^+e^-\xrightarrow{}h \gamma$ at the ILC

classification hep-ex hep-ph
keywords gammacouplinginternationalsignalbeamcasecentercollider
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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abstract

We study the $e^+e^-\to h \gamma$ process at the International Linear Collider (ILC) to probe new physics in the $h\gamma Z$ 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 $\sigma$ 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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