Conveners
Parallel : Collider + BSM: Day 2 Afternoon Session 1
- Kenji Nishiwaki (Shiv Nadar Institute of Eminence)
Parallel : Collider + BSM: Day 2 Afternoon Session 2
- Nilanjana Kumar (SGT University, Gurugram, Delhi-NCR)
Our search for new physics scenarios beyond the standard model requires special attention to the light particles, as they could have escaped our conventional searches. We focus on the prospect of detecting light long-lived particles (LLP) coming from the decays of SM Higgs boson and B-mesons at future colliders. Dedicated LLP detectors can play a crucial role in probing highly displaced light...
Charged lepton flavor violation (cLFV) processes, potentially important for
various Beyond the Standard Model Physics scenarios, are analyzed in the
Standard Model Effective Field Theory (SMEFT) framework. We consider the most
relevant 2 quark-2 lepton $(2q2\ell)$ operators for the leptonic and
semi-leptonic LFV B-decay (LFVBD) processes $B_s\to \mu^+e^- , B^+\to
K^+\mu^+e^-, B^0\to...
The emergence of jets, bunches of collimated hadrons, in high-energy colliders is a prevalent phenomenon. In the current LHC context, along with traditional narrow QCD jets, the study of fat jets, which may appear as a result of the decay of a heavy particle, has become an essential part of collider studies. Current jet clustering algorithms, namely $k_t$-type sequential recombination...
We will discuss an Effective Field Theory which extends the SM by an Axion-Like Particle (ALP) and mainly focus on the interactions of a light ALP to heavy SM particles. The talk is dedicated to the role of the LHC in probing ALP couplings particularly with the Higgs boson and the gauge bosons. We discuss a recent proposal to hunt for ALP signals in the non-resonant regime, i.e. when the ALP...
The Inert Triplet Model (ITM) is a much-studied Dark Matter model that extends the Standard Model (SM) of particle physics with a scalar $SU(2)$ triplet having hypercharge $Y=0$. The various DM experiments rule out a significant portion of the parameter space, cornering the model to an allowed region of TeV scale masses. The compressed mass spectrum of the scalars lead to displaced decays,...
Effective field theory (EFT) offers a powerful framework for indirect searches of physics beyond the Standard Model (BSM). Standard Model Effective Field Theory (SMEFT) is one of the most common EFT approaches for such searches. In SMEFT, the $SU(2)_L\times U(1)_Y$ electroweak (EW) symmetry of the Standard Model is linearly realized. However, it is possible that more general EFTs, such as the...
Small neutrino masses can be sourced by a tiny vacuum expectation value of a leptophilic Higgs doublet, and mediated by Quasi-Dirac heavy neutrinos. In such simplest linear seesaw picture the neutrino mass mediators can be accessible to colliders. We describe novel charged Higgs and heavy neutrino production mechanisms that can be sizeable at $e^-e^+$, $e^-\gamma$ and $\mu^-\mu^+$ colliders....
We focus on a rare, exotic decay channel of the top quark, t → cH, with H decaying to a pair of b-quarks produced at the High Luminosity runs of the Large Hadron Collider. For our study, we propose and implement a new jet tagging algorithm, which is efficient in identifying the said decay mode of the boosted top using a large-R jet with b- and c-tagged jets inside it. Identifying observables...
The $\mathcal{Z}_N \times \mathcal{Z}_M$ symmetry is a novel flavour symmetry, that can provide an explanation to the flavour structure of the Standard Model through the Froggatt-Nielsen mechanism. We have investigated the flavour bounds on the minimal $\mathcal{Z}_2 \times \mathcal{Z}_5$, and a non-minimal $\mathcal{Z}_2 \times \mathcal{Z}_9$ version of this symmetry using the current quark...
