Measurement of the Higgs Cross Section and Mass with Linear Colliders

TL;DR

This paper evaluates the precision of measuring the Higgs boson mass and production cross section at a linear collider operating at 350 GeV, using recoil mass techniques with leptonic Z decays.

Contribution

It demonstrates the achievable measurement accuracies for Higgs mass and cross section at a future linear collider with specified luminosity and energy.

Findings

Higgs mass can be measured with 150 MeV accuracy.

Recoil mass resolution is about 1.5 GeV.

Cross section measurement has a 3% statistical error.

Abstract

We report on the accuracy of the measurement of the Higgs boson mass and the total cross section of the process e+e- -> ZH that would be achieved in a linear collider operating at a centre-of-mass energy of 350 GeV, assuming an integrated luminosity of 500 (1/fb). For that we have exploited the recoil mass off the Z using its leptonic decays into electron and muon pairs. The Higgs mass is determined with 150 MeV accuracy, the recoil mass resolution is about 1.5 GeV and the cross section is obtained with a statistical error of 3%.