After the Higgs: status and prospects of the electroweak fit of the SM and beyond - with Gfitter
Dr Max Baak, CERN, Switzerland
Today, all fundamental Standard Model parameters are known and the global electroweak fit is used as a powerful tool to assess the validity of the Standard Model and to constrain scenarios for new physics. We present and discuss the Standard Model predictions of several key observables of the electroweak fit, which are dramatically improved by the knowledge of the Higgs mass. These results are compatible with, and exceed in precision, the direct measurements.
Constraints from the electroweak fit on loop contributions from beyond-SM models are also obtained, through an analysis of the so-called oblique parameters. We discuss the impact of the electroweak fit on Higgs coupling studies and vice versa. Future measurements at the Large Hadron Collider and the International Linear Collider promise to improve the experimental precision of key observables used in the fit. We present the prospects of the global electroweak fit in view of these improvements.
An Overview of ATLAS measurements
Dr Kostas Nikolopoulos, University of Birmingham, UK
Following the observation of a new boson during the summer of 2012, the ATLAS Collaboration has analysed the complete LHC Run I proton-proton collision dataset of 4.7/fb at the centre-of-mass-energy of 7 TeV and 20.7/fb at 8 TeV. An overview of the most recent results, including both the boson and fermion decay channels will be presented, and the current status of the coupling and spin/CP properties measurements of the Higgs boson will be presented.
Higgs Boson Studies at the Tevatron
Dr Jonathan Hays, Queen Mary University of London, UK
Run II at the Tevatron ran until September 2011, colliding protons with anti-protons at a centre of mass energy of 1.96 TeV. The combination of results from the CDF and D0 experiments for searches for a Standard Model Higgs boson using an integrated luminosity of
10fb-1 are presented. These are also interpreted in the context of fermiophobic and 4th generation models. An excess of events in the mass range 115 GeV to 140 GeV is observed consistent with the Higgs signal discovered at the LHC.
Higgs measurements from CMS
Dr Nick Wardle, CERN, Switzerland
Since the discovery of a new boson in the summer of 2012, the CMS collaboration have focused attention on understanding the nature of this particle and its interactions. The complete Run 1 dataset corresponding to 4.1/fb and 19.7/fb of proton-proton collisions and centre of mass energies 7 and 8 TeV has been analysed.
The talk will provide an overview of the most recent measurements in both bosonic and fermionic decay Higgs decay channels using the full Run 1 dataset.
SUSY Higgs bosons
Dr Sasha Nikitenko, Imperial College, UK
Several Higgs bosons with masses smaller or larger that 125 GeV are predicted in the best-motivated extension of the Standard Model - supersimmetry (SUSY). I will talk about searches for SUSY Higgs bosons at LHC experiments, ATLAS and CMS with data accumulated during 2010-2013 runs at 7 and 8 TeV and about prospects for the future runs with increased center of mass energy, 13-14 TeV.
I will also talk about searches for the non-standard model decays of the discovered Higgs boson with mass 125 GeV, in particular about decays into Dark Matter particles.