Conveners
Parallel Session: 1
- Santosh Parajuli (Univ. Illinois at Urbana Champaign (US))
Parallel Session: 3
- Roshan Joshi (Ohio State University (US))
Parallel Session: 5
- Jan Heisig (Université catholique de Louvain (UCL))
Parallel Session: 7
- There are no conveners in this block
The Standard Model of Particle Physics explains many natural phenomena yet remains incomplete. Vectorlike quarks (VLQs) lie at the heart of many extensions seeking to address the Hierarchy Problem, as they can naturally cancel the mass divergence for the Higgs boson. This talk summarizes recent ATLAS searches for VLQs which decay to quarks, or leptons, using Run 2 data collected at the LHC.
We report on the search for dark matter conducted at the CMS detector using the full Run-2 dataset from the LHC.This report focuses on the dark matter searches conducted using proton-proton collisions at a center-of-mass energy of 13 TeV with the CMS detector. It highlights the various event types investigated and discusses the findings in relation to several dark matter theories.
The latest results on BSM physics searches using long-lived signatures with the CMS detector will be presented.
Results from search for the rare decays of the standard model\,(SM) Higgs and Z boson to a J/$\Psi$ or $\Psi'$ meson and a photon, with subsequent decay of the meson to a pair of muons will be presented in this contribution. The analysis is performed using data recorded by the CMS detector during full Run 2 from proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to...
Statistically significant excesses exist at around 152 GeV in associated di-photon production contained in the sidebands of SM Higgs analyses. They are most pronounced in the $\gamma \gamma + \tau$, $\gamma \gamma + \text{MET}$, $\gamma \gamma + \geq 1 \ell +\geq 1b$, $\gamma \gamma + 4 j$ signal regions, and can be explained by the Drell-Yan production of new Higgs bosons, i.e. $p p \to W \to...
The rare $b\rightarrow s\ell^+ \ell^-$ transition is a well-explored transition, particularly for new physics beyond the standard model. Similar to this transition, another flavor changing neutral current transition $b\rightarrow s\nu \bar{\nu}$ involving a dineutrino pair also plays an important role in the search for new physics. The $B \rightarrow K \nu \bar{\nu}$ mode is one such...
We show that observations of primordial gravitational waves of inflationary origin can shed light into the scale of flavor violation in a flavon model which also explains the mass hierarchy of fermions. The energy density stored in oscillations of the flavon field around the minimum of its potential redshifts as matter and is expected to dominate over radiation in the early universe. At the...
The inflationary paradigm of the early universe has been extraordinarily consistent with the observations of the cosmic microwave background radiation,however, we still haven’t found a specific model of inflation that fits well within a high-energy theory. Analysis of recently Planck data shows that many previously popular field theoretical models like quadratic and quartic models of inflation...
The study of neutrino oscillations provides critical insights into the fundamental properties of neutrinos and their role in the universe. This talk focuses on the contributions of the Japanese long-baseline neutrino experiments to advancing our understanding of neutrino physics, specifically on my role in calibrating the upcoming Hyper-Kamiokande detector.
We study the discovery prospects of leptophilic dark matter (DM) in future lepton colliders by considering the light neutrinos to be of Dirac type. Adopting an effective field theory (EFT) approach, we write down dimension six operators connecting the standard model (SM) fields, light Dirac neutrinos and DM. Considering DM relic to be generated via the thermal freeze-out, we check the...
Dark Matter (DM) has become one of the major shortcomings of Standard Model (SM) of Particle Physics. We consider a model independent approach to search for Dark Matter in the context of HL-LHC (High Luminosity Large Hadron Collider) where our DM candidate is a Dirac-like fermion. In this analysis, we present the effect of one dimension-6 and two dimension-7 effective opertors who are...
The phenomenology community has extensively investigated the extreme conditions of matter within fermionic dark matter (FDM) admixed neutron stars using various effective field theories. A popular model in this context is hereby referred to as the σ − ω − ρ + FDM model, which incorporates fermionic dark matter interacting with baryonic matter through new scalar and vector mediators. However,...
The sources of high-energy astrophysical neutrino events are still unknown. We searched sources at an angular separation of 3 degrees from the neutrino event positions. out of 340 high energy astrophysical neutrinos, 262 were found to coincide with the positions of the blazar sources. The coincident number of blazar sources is 460. Nine of these sources had a maximum of four neutrino events...
For scattering cross sections large enough to make the detector in direct searches optically thick to
the incident dark matter, dedicated multi-scatter signatures are being sought. We provide some sig-
nificant updates to the multi-scatter program. First, we refine earlier treatments of the dark matter
flux through detectors, generalizing to arbitrary geometries and velocity distributions....
