Feasibility of a minimum bias analysis of $e^{+}{e}^{-}\to ZH\to q\bar{q}+X$ at a 250 GeV ILC

Abstract

The precision measurements of the Higgs properties is crucial for a better understanding of electroweak symmetry breaking. It can be first achieved at the ILC\pcite{Behnke2013} at $\sqrt{s}=250\mathrm{GeV}$ via the Higgs-strahlung production process $e^{+}{e}^{-}\to ZH$. The hadronic decay mode $Z\to \bar{q}q$ constitutes more than $65$ of the total, a factor 10 more than $Z\to \mu \mu$. An analysis based solely on the $Z$ jet pair information could thus lead to a high statistics and provide a minimum biased Higgs sample. A study of the feasibility of such analysis is shown here, based on $e^{+}{e}^{-}$ simulated collisions at $250\mathrm{GeV}$ in center of mass, for the equivalent integrated luminosity of $500\mathrm{f}{\mathrm{b}}^{-1}$ and using a fast simulation of the ILD detector.

Comments: Talk presented at the International Workshop on Future Linear Colliders (LCWS13), Tokyo, Japan, 11-15 November 2013