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%).

arXiv comment8 pages, 10 figures