Conveners
Higgs IV
- Dorival Goncalves (Oklahoma State University)
We consider a classically conformal $U(1)$ extension of the Standard Model (SM). The $U(1)$ symmetry is radiatively broken by the Coleman-Weinberg mechanism, after which the $U(1)$ Higgs field $\phi$ drives electroweak symmetry breaking through a mixed quartic coupling with the SM Higgs doublet with coupling constant $\lambda_{mix}$. We calculate the Higgs triple couplings in this system and...
The presence of heavy new physics generally alters the Standard Model (SM) Higgs couplings predictions. In many models, momentum effects are assumed to decouple as the heavy states are integrated out. However, these effects can be important in situations of significant off-shellness at collider experiments. In this talk, I will discuss the momentum dependence of different beyond the SM...
The Standard Model (SM) explaining the framework of elementary particles seems to be completed
by the discovery of the SM-like Higgs boson with a mass of about 125 GeV at the Large Hadron
Collider(LHC) in 2012. Despite this success, there are enough experimental evidences, ranging
from observed dark matter (DM) relic density and matter-antimatter asymmetry in the universe
to non-zero...
We explore the new physics reach for the off-shell Higgs boson measurement in the ${pp \to H^* \rightarrow Z(\ell^{+}\ell^{-})Z(\nu\bar{\nu})}$ channel at the high-luminosity LHC. The new physics sensitivity is parametrized in terms of the Higgs boson width, effective field theory framework, and a non-local Higgs-top coupling form factor. Adopting Machine-learning techniques, we demonstrate...
The top-quark Yukawa coupling $y_t$ is the strongest interaction of the Higgs boson in the Standard Model (SM) with $y_t \sim 1$. Due to its magnitude, it plays a central role in Higgs phenomenology in the SM and would be most sensitive to physics beyond the Standard Model. The top Yukawa can be directly measured at the LHC via top pair production in association with a Higgs boson...
"Singlet scalar mediators have a wide phenomenological application and a variety of SM extensions have been based on them. In this work, we build upon the story of flavor-specific scalars, where the scalar dominantly couples to one specific SM fermion mass eigenstate. This hypothesis meshes well with absence of new flavor changing neutral currents at tree level. Earlier works were based on an...
In this talk I will present results of the simulation of electroweak Higgs boson production at the CERN LHC using the Herwig 7 general purpose event generator using one-loop matrix elements via the interface to HJets. The main result will be the simulation of next-to-leading order merging of Higgs boson plus 2 and 3 jets with a dipole parton shower. Additionally, I will comment on...
The most recent result achieved by the CMS experiment in the field of Heavy Flavour and Quarkonia Physics will be presented and discussed with emphasis to the brand new measurements and observations.
