Hamburg 2016 – scientific programme
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T: Fachverband Teilchenphysik
T 67: Higgs-Boson (assoziierte Produktion) III
T 67.5: Talk
Wednesday, March 2, 2016, 17:45–18:00, VMP5 HS B1
Kinematic Reconstruction of the Higgs Mass at the ILC — •Aliakbar Ebrahimi1,2 and Jenny List1 — 1Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg — 2Universität Hamburg, Institut für Experimentalphysik, Luruper Chaussee 149, 22761 Hamburg
The International Linear Collider (ILC) is a future e+e− collider with center-of-mass energies of 200 to 500 GeV, upgradeable to 1 TeV. The aim of the ILC comprises precision measurements of known and possible new particles in the clean experimental conditions of a lepton collider.
A well established method to reach ultimate precision on the Higgs mass is to measure the recoil of the Higgs against a Z boson in e+e−→ ZH with Z→ µ+µ− at center-of-mass energy of 250 GeV. In order to reach the level of 10−20 MeV precision, a substantial amount of running time (more than 5 years) needs to be spent at this rather low center-of-mass energy.
An important question is to understand whether this is the only method to reach this level of precision, or whether alternatives applicable at higher center-of-mass energies exist. Therefore, we investigate the potential of direct kinematic reconstruction of Higgs decays using the dominant hadronic decays of the Higgs bosons, in particular H→ bb. The study is based on full simulation of one of the two proposed detectors for the ILC, the International Large Detector (ILD), at center-of-mass energies of 350 and 500 GeV.