22-29 July 2015
Europe/Vienna timezone

Off-shell effects in Higgs processes at a linear collider and the LHC

Jul 23, 2015, 10:10 AM
15m
Großer Festsaal

Großer Festsaal

talk Higgs and New Physics Higgs and New Physics

Speakers

Prof. Georg Ralf Weiglein (Deutsches Elektronen-Synchrotron (DE)) Prof. Gudrid Moortgat-Pick (University of Hamburg / Desy)

Description

We discuss the importance of off-shell Higgs contributions for a SM-like Higgs boson at a linear collider and the LHC. Possible constraints on the total Higgs width are investigated, the involved theoretical assumptions are analysed, and it is shown that the interference between signal and background limits the sensitivity for a SM-like width. Off-shell contributions and signal-background interference can potentially enhance the sensitivity to an additional heavier Higgs boson with suppressed couplings to gauge bosons. This issue is investigated in the context of a Two-Higgs-Doublet model.

Primary author

Prof. Georg Ralf Weiglein (Deutsches Elektronen-Synchrotron (DE))

Co-authors

Prof. Gudrid Moortgat-Pick (University of Hamburg / Desy) Dr Stefan Liebler (DESY)

Presentation materials