Physics potential of the σe+e−→Hνeνe × BRH→Zγ measurement at a 1.4 TeV Compact Linear Collider

We present a benchmark study of the cross section times branching ratio measurement for the process e+e− → Hνeνe; H → Zγ evaluated at a 1.4TeV e+e− Compact Linear Collider (CLIC) using the CLIC_SiD_CDR detector model. The study is based on a full GEANT4 detector simulation and reconstruction of signal and background processes, including γγ → hadrons background events. The combined statistical precision of σe+e− → Hνeνe ×BRH→Zγ , including the Z decay channels Z → qq, Z → e+e−, and Z → μ+μ−, for an integrated luminosity of 1.5 ab−1, is estimated to be approximately 42%. For a CLIC collider with −80% (left-handed) electron beam polarisation, the uncertainty can be reduced to approximately 31%.