The two Higgs doublet model allows for correlated enhancements of $t \bar{t} h$ and di-Higgs production rates, consistent with known properties of the Higgs boson. Results of our analysis will be presented.
With the discovery of Standard Model(SM) Higgs boson at the LHC, exploring the thermal history associated with electroweak symmetry-breaking (EWSB) has taken on heightened interest. The process of the electroweak phase transition (EWPT) in early universe provides conditions able to explain the observed cosmic matter-antimatter asymmetry, if the transition were of first order and sufficiently...
The simplest extension of the Standard Model is the singlet extended Standard Model. This model adds a gauge singlet scalar, $S$, which has interactions with the Standard Model Higgs doublet. For a sufficiently heavy new scalar and in the absence of a $Z_2$ symmetry $S\rightarrow -S$, this model can lead to resonant double Higgs production, which leads to a significant increase in production...
One of the simplest extensions of the Standard Model is the inclusion of an additional scalar multiplet, and we consider
scalars
in the $SU(2)_L$ singlet, triplet, and quartet representations. We
consider models with heavy neutral scalars, $m_H\sim 1-2$ TeV, and the matching of the UV complete theories to
the low energy effective field theory. We demonstrate the
agreement of the kinematic...
Several theories beyond the Standard Model predict enhanced production rates for Higgs Boson pair production. Other theories predict Lepton Flavour Violating decays of the Higgs boson or enhanced decay rates into rare modes like Z-photon, J/Psi-photon, Phi-photon or into pairs of light pseudoscalar bosons "a". In this presentation the latest ATLAS results on searches for these particles will...
We suggest that the exclusive Higgs + light (or b) jet production at the LHC,
$pp \to h+j(j_b)$, is a rather sensitive probe
of the light-quarks Yukawa couplings and of new physics (NP) in the
Higgs-gluon $hgg$ and quark-gluon $qqg$ interactions.
We study the Higgs $p_T$ distribution in $pp \to h+j(j_b)$, employing non-differential observables
to probe the different types of NP relevant for...
There has been a great deal of interest in the Left Right symmetric electro-weak gauge theory in recent years due to its potential accessibility at the LHC. The scalar sector of the minimal left right symmetric model (MLRSM) at TeV scale is revisited in light of the photon initiated processes at the large hadron collider (LHC). Without introducing any guest particles and just by adding an...
