Jayita Lahiri

Invisible decays of the lightest Higgs boson in supersymmetric models

We consider supersymmetric models in which the lightest Higgs scalar can decay invisibly consistent with the constraints on the 126 GeV state discovered at the CERN LHC. We consider the invisible decay in the minimal supersymmetric standard model (MSSM), as well its extension containing an additional chiral singlet superfield, the so-called next-to-minimal or nonminimal supersymmetric standard model (NMSSM). We consider the case of MSSM with both universal as well as nonuniversal gaugino masses at the grand unified scale, and find that only an

Alternative search strategies for a BSM resonance fitting the ATLAS diboson excess

{E}_{6}

Invisible decays of the heavier Higgs boson in the minimal supersymmetric standard model

grand unified model with unnaturally large representation can give rise to sufficiently light neutralinos which can possibly lead to the invisible decay

Top Yukawa coupling measurement with indefinite CP Higgs in e(+)e(-) -> t(t)over-bar Phi

{h}^{0}\ensuremath{\rightarrow}{\stackrel{\texttildelow{}}{\ensuremath{\chi}}}_{1}^{0}{\stackrel{\texttildelow{}}{\ensuremath{\chi}}}_{1}^{0}

New physics in e + e − → Zγ at the ILC with polarized beams: explorations beyond conventional anomalous triple gauge boson couplings

. Following this, we consider the case of NMSSM in detail, where we also find that it is not possible to have the invisible decay of the lightest Higgs scalar with universal gaugino masses at the grand unified scale. We delineate the regions of the NMSSM parameter space where it is possible for the lightest Higgs boson to have a mass of about 126 GeV, and then concentrate on the region where this Higgs can decay into light neutralinos, with the soft gaugino masses

Probing the indefinite CP nature of the Higgs boson through decay distributions in the process e(+)e(-) -> t(t)over-bar Phi

{M}_{1}

Generalized top-spin analysis and new physics in e(+)e(-) collisions with beam polarization

and

Top Yukawa coupling measurement with indefinite CP Higgs in e+e- →t t ̄ Φ TOP YUKAWA COUPLING MEASUREMENT with ⋯ ANANTHANARAYAN et al.

{M}_{2}

Top Yukawa coupling measurement with indefiniteCPHiggs ine+e−→tt¯Φ

as two independent parameters, unconstrained by grand unification. We also consider, simultaneously, the other important invisible Higgs decay channel in the NMSSM, namely the decay into the lightest

Status of MSSM Higgs sector after ICHEP 2016

CP