* Speaker: Jeremy Bernon (LPSC Grenoble) & Beranger Dumont (IBS CTPU)

* Time and date: 2-2:30pm, January 22

* Abstract: The discovery of a particle with properties very similar to those of the Standard Model (SM) Higgs boson is one impressive success of LHC Run I. This new sector which is now experimentally accessible could be intimately connected to the mechanism at the origin of the electroweak symmetry breaking. Precise determination of the properties of this particle could therefore have profound implications.

Presenting first the different production and decay modes of a SM-like Higgs boson, I will then discuss the current status of the Higgs measurements at the LHC. Using the ATLAS and CMS experimental results, an approximation to the Higgs likelihood can be constructed and used to constraint various new physics scenarios. Introducing the public code Lilith, details about this construction and the underlying hypotheses are given. I will finally show results of various fits in terms of combined signal strengths, reduced couplings and in the context of the Two-Higgs-Doublets models of type I/II. Limits on invisible/unseen branching ratios are also derived.

* References:
- Jeremy Bernon, Beranger Dumont, Sabine Kraml, arXiv:1409.1588
- Jeremy Bernon, John F. Gunion, Yun Jiang, Sabine Kraml, arXiv:1412.3385

In the remaining time (2:30-3pm), I would like to present and discuss a recent proposal by Kyle Cranmer, Sven Kreiss, David Lopez-Val, and Tilman Plehn for decoupling theoretical uncertainties from experimental measurements of the Higgs boson. This new way of presenting Higgs results would be an important step forward as one could treat all theoretical uncertainties (possibly common to several measurements) in a consistent way. It also makes it possible to reevaluate the theoretical uncertainties a posteriori, once new calculations become available.