The measurement of the Higgs boson's production and decay rates and its couplings to vector bosons and fermions, based on the data collected by the CMS experiment in proton-proton collisions at a center-of-mass energy of 13 TeV, delivered by the CERN LHC in 2016, corresponding to an integrated luminosity of 35.9 fb $^{-1}$, is presented. Several parametrizations and interpretations of the...
The precise measurement of the properties of the Higgs boson is one of the main goal of the physics research at the LHC. The presentation shows the new results achieved by the ATLAS collaboration in the bosonic Higgs decay channels ($H\rightarrow\gamma\gamma$, $H\rightarrow ZZ^*$, $H\rightarrow WW^*$) using 36 fb$^{−1}$ of proton-proton collision data recorded at $\sqrt{s}= 13$ TeV during the...
The 125 GeV Higgs completes the Standard model particle roster, while offering new opportunities for looking for physics beyond. We focus on certain kinematics at off-shell Higgs signal region that probe the Higgs sector, especially the ability to distinguish among Standard model and generic new physics scenarios.
No matter what the scale of new physics is, deviations from the Standard Model for the Higgs observables will indicate the existence of such a scale. We consider effective six dimensional operators, and their effects on the Higgs productions and decays to estimate this new scale. We analyze and identify the parameter space consistent with known properties of the Higgs boson using recent Run II...
The LHC experimental discovery of the Higgs boson, along with the measurement of Higgs properties suggests that the SM is a valid effective theory at the weak scale. The lack of new particles up to the TeV scale makes possible the parameterization of possible high scale physics effects in terms of higher dimension operators containing only SM fields (SMEFT). In this talk I will present the...
In this talk, I will discuss the present status of the Higgs boson's properties since its discovery in 2012. I will focus on the measurements of the various Higgs couplings in several standard decay modes in the context of an effective field theory by introducing dimension-6 (D6) operators. I shall show that considering the effects of the D6 operators on the experimental cut-efficiencies might...
Standard model is successful in explaining Higgs physics, however new physics beyond the standard model may yet be expected. We study how the inclusion of real singlet scalar and dimension 5 operators effect SM Higgs physics. We do this by studying the deviations of the total width and branching ratios of the Higgs from the SM predictions. We also study the limit on scalar mixing angle and...
