27 citations · 285 across the 32 of their papers we have counts for
34 papers · 1 filter
Search for Dark Matter in 2HDMS at LHC and future Lepton Colliders
Juhi Dutta, Jayita Lahiri, Cheng Li +3
We investigate the phenomenological prospects of the Two Higgs Doublet and Complex Singlet Scalar Extension (2HDMS) in the context of dark matter (DM) and Higgs phenomenology. The…
Reinterpretation and preservation of data and analyses in HEP
Jon Butterworth, Sabine Kraml, Harrison Prosper +145
Data from particle physics experiments are unique and are often the result of a very large investment of resources. Given the potential scientific impact of these data, which goes…
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…
The Influence of Lepton Portal on the WIMP-pFIMP framework
Jayita Lahiri, Dipankar Pradhan, Abhik Sarkar
The dynamics and detection possibility of a pseudo-FIMP (pFIMP) dark matter (DM) in the presence of a thermal DM have been studied in different contexts. The pFIMP phenomenology la…
Vacuum (in)stability in 2HDMS vs N2HDM
Jayita Lahiri, Gudrid Moortgat-Pick
In this work, we examine the criteria for vacuum stability in two models with extended scalar sectors namely, the N2HDM and the 2HDMS and make a detailed comparison between the two…
Coscattering in the Extended Singlet-Scalar Higgs Portal
Bastián Díaz Sáez, Jayita Lahiri, Kilian Möhling
We study the coscattering mechanism in a simple Higgs portal which add two real singlet scalars to the Standard Model. In this scenario, the lighter scalar is stabilized by a singl…
Two-component dark matter : How to get the hint at collider?
Jayita Lahiri, Subhaditya Bhattacharya, Purusottam Ghosh +1
We investigate ways of identifying two kinds of dark matter (DM) component particles at high-energy colliders. The strategy is to notice and distinguish double-peaks(humps) in the…
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.…
Dark matter phenomenology in Z'2 broken singlet extended 2HDM
Julia Anabell Ziegler, Juhi Dutta, Jayita Lahiri +3
Many different approaches have been made to explain the nature of dark matter (DM), but it remains and unsolved mystery of our universe. In this work we examine a type II two-Higgs…
High scale validity of two Higgs doublet scenarios with a real scalar singlet dark matter
Subhaditya Bhattacharya, Atri Dey, Jayita Lahiri +1
We study the high-scale validity of two kinds of two Higgs doublet models (2HDM), namely, Type-II and Type-X, but with a scalar SU(2) singlet dark matter (DM) candidate in addition…
Dark Matter Phenomenology in 2HDMS in light of the 95 GeV excess
Juhi Dutta, Jayita Lahiri, Cheng Li +3
The Two Higgs Doublet model extended with a complex scalar singlet (2HDMS) is a well-motivated Beyond Standard Model candidate addressing several open problems of nature. In this w…
Detection possibility of a Pseudo-FIMP in presence of a thermal WIMP
Subhaditya Bhattacharya, Jayita Lahiri, Dipankar Pradhan
A dark matter (DM) having feeble interaction with the visible sector can thermalise via substantial interaction with a Weakly Interacting Massive Particle (WIMP). Such DM candidate…
Dynamics of the pseudo-FIMP in presence of a thermal Dark Matter
Subhaditya Bhattacharya, Jayita Lahiri, Dipankar Pradhan
We demonstrate that in a two component dark matter (DM) set up, when DM is equilibrated with the thermal bath, the other DM, in spite of having feeble or negligible interac…
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…
Mono-X signal and two component dark matter: new distinction criteria
Subhaditya Bhattacharya, Purusottam Ghosh, Jayita Lahiri +1
The identification and isolation of two WIMP dark matter (DM) components at colliders is of wide interest on the one hand but extremely challenging on the other, especially when th…
Distinguishing two dark matter component particles at colliders
Subhaditya Bhattacharya, Purusottam Ghosh, Jayita Lahiri +1
In this work we demonstrate that a distorted double hump like missing energy ($\slashed{E}$) or missing transverse momentum ($\slashed{E}_T$) or missing mass ($\slashed{M}$) distri…
Collider Signatures of Type-X 2HDM + scalar singlet dark matter at HL-LHC
Atri Dey, Jayita Lahiri
As the 125 GeV Higgs becomes disfavored as a portal to the dark sector, one is motivated to look beyond the SM-Higgs sector, into extended scalar-mediated portal mechanisms. In thi…
Analyzing polarized boosted top from stop decay at high luminosity and high energy LHC
Jayita Lahiri
Measuring top polarization is extremely important in understanding any new physics that couples to top quark. Here, we take up the task of extracting polarization of top quark comi…
Generalized 2HDM with wrong-sign lepton Yukawa coupling, in light of and lepton flavor violation at the future LHC
Nivedita Ghosh, Jayita Lahiri
To explain the observed muon anomaly and simultaneously evade bounds from lepton flavor violation in the same model parameter space is a long cherished dream. In view of a generali…
The mono-Higgs + MET signal at the Large Hadron Collider: a study on the and final states
Debabrata Bhowmik, Jayita Lahiri, Satyaki Bhattacharya +2
We investigate the potential of the channel {\em mono-Higgs + MET} in yielding signals of dark mater at the high-luminosity Large Hadron Collider (LHC). As illustration, a scalar d…
Probing the interaction at the high energy upgrade of the LHC
Amit Adhikary, Nabarun Chakrabarty, Indrani Chakraborty +1
An interaction at the tree level is common feature of new physics models that feature scalar triplets. In this study, we aim to probe the strength of the aforementi…
Revisiting Generalized Two Higgs Doublet Model in the Light of Muon Anomaly and Lepton Flavor Violating Decays at HL-LHC
Nivedita Ghosh, Jayita Lahiri
One of the main motivations to look beyond the SM is the discrepancy between the theoretical prediction and observation of anomalous magnetic moment of muon. Alleviating this tensi…
LHC signals of triplet scalars as dark matter portal: cut-based approach and improvement with gradient boosting and neural networks
Atri Dey, Jayita Lahiri, Biswarup Mukhopadhyaya
We consider a scenario where an SU(2) triplet scalar acts as the portal for a scalar dark matter particle. We identify regions of the parameter space, where such a triplet coexists…
LHC signals of a heavy doublet Higgs as dark matter portal: cut-based approach and improvement with gradient boosting and neural networks
Atri Dey, Jayita Lahiri, Biswarup Mukhopadhyaya
Though the 125-GeV scalar, as the Higgs boson of the standard model, is disfavoured as a dark matter portal by direct searches and the observations on relic density, a heavier scal…