27 citations · 180 across the 18 of their papers we have counts for
19 papers · 1 filter
One Event, Two Frontiers: From LZ to LHC
Md Sadique Anwar, Nivedita Ghosh, Sahabub Jahedi +1
The 248 keV nuclear-recoil event observed by the LUX-ZEPLIN (LZ) experiment could potentially arise from dark matter (DM) interactions with nucleons. We investigate elastic scatter…
Neutron stars as thermometers for reheating induced dipole dark matter
Sahabub Jahedi
We investigate the electromagnetic interactions of dipole dark matter (DM) within an effective field theory framework, considering both standard and non-standard cosmological scena…
Systematic study of lepton-flavor-violating dark matter interactions via indirect detection in effective field theories
Sahabub Jahedi, Jin-Han Liang, Yi Liao +2
Lepton-flavor-violating (LFV) interactions involving dark matter (DM) particles remain a largely unexplored area. In this study, we systematically investigate LFV DM interactions w…
Electroweak phase transition in SMEFT: Gravitational wave and collider complementarity
Sahabub Jahedi, Indrajit Saha, Abhik Sarkar
We study the first-order electroweak phase transition (FO-EWPT) within the Standard Model Effective Field Theory (SMEFT) framework induced by dimension-6 operators. Such phenomena…
Charged lepton flavor violating decays with a pair of light dark matter and muonium invisible decay
Sahabub Jahedi, Yi Liao, Xiao-Dong Ma
In this paper, we initiate the study of lepton flavor violating (LFV) dark matter (DM) interactions, expanding our focus beyond the flavor-conserving DM interactions typically cons…
Multi-messenger FIMP
Debasish Borah, Nayan Das, Sahabub Jahedi +1
We propose a multi-messenger frontier probe of non-thermal or freeze-in massive particle (FIMP) dark matter (DM) by considering an effective field theory (EFT) setup. Assuming lept…
Probing ALP-portal fermionic dark matter at the colliders
Subhaditya Bhattacharya, Sahabub Jahedi, Soumen Kumar Manna +1
Axion-like particles (ALPs) are promising candidates for mediating interactions between a dark sector and the Standard Model (SM). In this work, considering the effective interacti…
Optimal sensitivity of anomalous charged triple gauge couplings through boson helicity at the colliders
Sahabub Jahedi, Jayita Lahiri, Amir Subba
We study the estimation of anomalous charged triple gauge couplings (cTGCs) parameterized in a model-independent Standard Model effective field theory (SMEFT) framework via pr…
Lepton collider as a window to reheating via freezing in dark matter detection. Part II
Basabendu Barman, Subhaditya Bhattacharya, Sahabub Jahedi +2
Dark matter (DM) genesis via Ultraviolet (UV) freeze-in embeds the seed of reheating temperature and dynamics in its relic density. Thus, discovery of such a DM candidate can possi…
Collider and CMB complementarity of leptophilic dark matter with light Dirac neutrinos
Debasish Borah, Nayan Das, Sahabub Jahedi +1
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 theo…
Exploring Optimal Sensitivity of Lepton Flavor Violating Effective Couplings at the Colliders
Sahabub Jahedi, Abhik Sarkar
We analyze lepton flavor violation (LFV) using the Standard Model Effective Field Theory (SMEFT) framework at the future lepton colliders. Our focus is on the associated production…
Lepton collider as a window to reheating via freezing in dark matter detection. Part I
Basabendu Barman, Subhaditya Bhattacharya, Sahabub Jahedi +2
We propose a methodology to infer the reheat temperature () of the Universe from the collider signal of freezing in dark matter (DM). We demonstrate it for the mono-…
Probing flavor constrained SMEFT operators through production at the Muon collider
Subhaditya Bhattacharya, Sahabub Jahedi, Soumitra Nandi +1
We investigate flavour violating four Fermi Standard Model Effective Field Theory (SMEFT) operators of dimension-six that can be probed via production at…
Optimal New Physics estimation in presence of Standard Model backgrounds
Subhaditya Bhattacharya, Sahabub Jahedi, Jayita Lahiri +1
In this work, we develop a numerical technique for the optimal estimation of the new physics (NP) couplings applicable to any collider process without any simplifying assumptions.…
Optimal estimation of Dimension-8 Neutral Triple Gauge Couplings at Colliders
Sahabub Jahedi
We investigate the measurement of non-standard ZZV (V = γ, Z) couplings through Z-boson pair production at the colliders. We adopt Standard Model Effective Field Theory (…
Optimal determination of New Physics couplings: A comparative study
Subhaditya Bhattacharya, Sahabub Jahedi, Jose Wudka
We study the determination of new physics (NP) parameters using the optimal observable technique (OOT) in situations where the standard model (SM) dominates over the NP effects, an…
Probing anomalous and Couplings at the Colliders using Optimal Observable Technique
Sahabub Jahedi, Jayita Lahiri
We study the anomalous and couplings that can be probed via production at the colliders. We take Standard Model Effective Field Theory (SMEFT) approac…
Effective Leptophilic WIMPs at the collider
Basabendu Barman, Subhaditya Bhattacharya, Sudhakantha Girmohanta +1
We consider higher-dimensional effective (EFT) operators consisting of fermion dark matter (DM) connecting to Standard Model (SM) leptons upto dimension six. Considering all operat…
Probing heavy charged fermions at collider using the Optimal Observable Technique
Subhaditya Bhattacharya, Sahabub Jahedi, Jose Wudka
In this work we study the production of color-neutral and singly-charged heavy leptons at the proposed International Linear Collider. We use the optimal observable technique to det…