Several theories beyond the Standard Model, like the EWS or 2HDM models, predict the existence of high mass neutral or charged Higgs particles. In this presentation the latest ATLAS results on searches for these particles will be discussed.

The strong phase from QCD could play important role in (B)SM heavy particle productions at hadron colliders, altering the resonance signatures significantly and providing more physics insights into the underlying physics. I will discuss the strong phase in Higgs phenomenology and the new windows opened up for BSM physics.

We analyze the hVV (V = W, Z) vertex in a model independent way using

Vh production. To that end, we consider possible corrections to the Standard Model Higgs Lagrangian, in the form of higher dimensional operators which parametrize the effects of new physics. In our analysis, we pay special attention to linear observables that can be used to probe CP violation in the same. By considering the...

We calculate the helicity amplitude of $e^+e^-\to ht\bar{t}$, where the Higgs boson h(125) is assumed to be a CP mixed state with both CP-even and CP-odd components. The amplitudes depend both on the CP violating htt Yukawa coupling and the CP conserving $hZZ$ coupling. We calculate the helicity amplitudes in the tt rest frame, where the initial $e^+e^−$ current and the final Higgs boson have...

In this talk we will review the results on the searches for light beyond the standard model higgs boson states with CMS data.

The current run of the LHC is at full swing. An important task for the experimental and theoretical community is to study in detail the scalar sector of nature, in order to determine whether the Standard Model or a possible extension is realized. In this talk, I will discuss two such extensions, viz., a model with a simple scalar extension as well as a two Higgs doublet model. I will discuss...

LHC searches with $\tau$ leptons in the final state are always inclusive in missing-energy sources. A signal in the flavor-violating Higgs decay search, $h\to\tau\mu$, could therefore equally well be due to a flavor conserving decay, but with an extended decay topology with additional invisible particles.

In this talk, I demonstrate this with the three-body decay $h\to\tau\mu\varphi$, where...

The discovery of a 125 GeV scalar particle, and it subsequent identification with the Higgs bosons of the SM, is one of the greatest accomplishments of high-energy particle physics. However, the discovery of this particle still leaves many open questions. In this talk we would like to understand if the observed 125 GeV Higgs gives mass to all quarks and leptons. We will entertain the idea that...