A measurement of the total cross section of $\sigma_{Zh}$ at a future $e^{+}e^{-}$ collider using the hadronic decay mode of $Z$

Abstract

A feasibility to use the hadronic decay mode of $Z$ for the model independant measurement of the total cross section of Higgs-strahlung process $(\sigma_{Zh})$ at a future $e^+e^-$ collider was studied. For the recoil mass measurement from hadronic decay of $Z$, a simple cut based analysis was applied on samples produced by the ILD full detector simulation at $\sqrt{s}=350$ GeV and 500 GeV using the ILC beam parameters. At $350$ GeV, a bump in the recoil mass distribution was reconstructed, and $\Delta\sigma_{Zh}/\sigma_{Zh}$ = 3.4% was obtained assuming 165 fb$^{-1}$ data with $e^-(e^+)$ beam polarization of -80%(+30%) and +80%(-30%), respectively. At $500$ GeV, clear Higgs boson peak in the recoil mass distribution was not seen, however, from the excess of the events, $\Delta\sigma_{Zh}/\sigma_{Zh}=3.9%$ was obtained assuming 500 fb$^{-1}$ data with $e^-(e^+)$ beam polarization of -80%(+30%).