Higgs boson production at the CMS experiment

Somnath Choudhury

doi:10.1016/j.nuclphysbps.2016.12.035

Abstract

After the discovery of the Higgs boson, the ATLAS and CMS experiments have performed combined measurements of the mass of the Higgs boson and also measurements of the production and decay rates, as well as constraints on its couplings to vector bosons and fermions. These combined LHC measurements from the proton-proton collision Run-1 data will be summarized. In addition, the first results from the CMS experiment, on the way to the rediscovery of the Higgs boson in different production and decay modes with the early Run-2 data will also be presented in this paper.

Highlights

In July 2012, the ATLAS and CMS experiments [1] reported the observation of a new particle at a mass of approximately 125 GeV with Higgs boson-like properties using proton-proton collision data from the LHC at CERN corresponding to integrated luminosities of around 5 fb−1 at 7 TeV and 5 fb−1 at 8 TeV centre-ofmass energies [2]
Subsequent results from both experiments established that the measurements of the properties of the new particle, including its spin, parity, and coupling strengths to other standard model (SM) particles, are consistent with those expected for the SM Higgs boson within uncertainties
The SM Higgs boson analyses utilise the major Higgs boson production mechanisms in proton-proton collisions which are in order of decreasing cross sections namely gluon fusion, vector boson fusion (VBF), associated production with vector bosons (VH), and production with top quark pair

Summary

Introduction

In July 2012, the ATLAS and CMS experiments [1] reported the observation of a new particle at a mass of approximately 125 GeV with Higgs boson-like properties using proton-proton collision data from the LHC at CERN corresponding to integrated luminosities of around 5 fb−1 at 7 TeV and 5 fb−1 at 8 TeV centre-ofmass energies [2] Subsequent results from both experiments established that the measurements of the properties of the new particle, including its spin, parity, and coupling strengths to other standard model (SM) particles, are consistent with those expected for the SM Higgs boson within uncertainties. Combined ATLAS and CMS measurements of the Higgs boson mass, production and decay rates, as well as constraints on its couplings to vector bosons and fermions have been performed using the LHC Run-1 data. This constraint applies to invisible decays into BSM particles, decays into BSM particles that are not detected as such, and modifications of the decays into SM particles that are not directly

Towards rediscovery of the SM Higgs boson at LHC Run-2

Findings

Conclusion