88 citations · 1.2k across the 67 of their papers we have counts for
60 papers · 1 filter
Multi-Higgs production from a theory of varying Higgs quartic and top Yukawa couplings
Ulf Danielsson, Rikard Enberg, Gunnar Ingelman +3
We study the collider phenomenology of a theory in which the Higgs quartic self-coupling and the top Yukawa coupling are \textit{varying couplings}, which arise dynamically from tw…
PINNing the pion: conformal deep learning for and the hadronic contribution
Mayank Goel, Subhadip Mitra, Monalisa Patra
Extracting the pion electromagnetic form factor through phenomenological curve-fitting models introduces model dependence, unphysical artefacts, and kinematic inconsistenc…
Schur elimination of brane-localised Higgs mass spectra, and the criteria for the / non-commutativity
Roberto Barceló, Subhadip Mitra
In many 5D extensions of the Standard Model, the Higgs boson is localised to a single point along the extra dimension, where it couples to bulk fermions. Computing the fermion mass…
Testing varying coupling constants through multi-Higgs production at the LHC
Ulf Danielsson, Rikard Enberg, Gunnar Ingelman +3
We propose the One Scalar Theory (1ST), a minimalist framework where a single real singlet scalar field mediates the dynamical generation of the Higgs self-coupling and the top Yuk…
Photon-initiated enhancements in the pair production of highly charged coloured particles
Tanumoy Mandal, Subhadip Mitra, Rachit Sharma
Strong interaction is typically assumed to dominate the pair production of heavy coloured resonances at the LHC. However, mixed QCD-QED contributions from gluon-photon () initi…
Vectorlike production through leptoquarks
Shruti Dubey, Nilanjana Kumar, Tanumoy Mandal +2
Numerous phenomenological studies and collider searches have probed for the existence of new physics by looking for signatures of leptoquarks (LQs) or vectorlike leptons (VLLs). We…
Fresh look at the LHC limits on vector leptoquarks
Arijit Das, Tanumoy Mandal, Subhadip Mitra +1
Vector leptoquarks (vLQs) are popular candidates for searching for physics beyond the Standard Model. In this paper, we present updated exclusion limits on various vLQ species, acc…
Tagging fully hadronic exotic decays of the vectorlike quark using a graph neural network
Jai Bardhan, Tanumoy Mandal, Subhadip Mitra +2
Following up on our earlier study in [J. Bardhan et al., Machine learning-enhanced search for a vectorlike singlet B quark decaying to a singlet scalar or pseudoscalar, Phys. Rev.…
Right-handed neutrino production through first-generation leptoquarks
Gokul Duraikandan, Rishabh Khanna, Tanumoy Mandal +2
The collider phenomenology of leptoquarks (LQs) and right-handed neutrinos (RHNs) has been studied extensively in the literature. Because of the gauge singlet nature, the productio…
Loss function to optimise signal significance in particle physics
Jai Bardhan, Cyrin Neeraj, Subhadip Mitra +1
We construct a surrogate loss to directly optimise the significance metric used in particle physics. We evaluate our loss function for a simple event classification task using a li…
TooLQit: Leptoquark Models and Limits
Arvind Bhaskar, Yash Chaurasia, Arijit Das +5
We introduce the leptoquark (LQ) toolkit, TooLQit, which includes leading-order FeynRules models for all types of LQs and a Python-based calculator, named CaLQ, to test if a set of…
Machine learning tagged boosted dark photon: A signature of fermionic portal matter at the LHC
Shivam Verma, Sanjoy Biswas, Tanumoy Mandal +1
We use a Hybrid Deep Neural Network (HDNN) to identify a boosted dark photon jet as a signature of a heavy vector-like fermionic portal matter (PM) connecting the visible and the d…
Vector leptoquark contributions to lepton dipole moments
Arvind Bhaskar, Diganta Das, Soumyadip Kundu +3
Leptoquarks (LQs) can contribute to the magnetic and electric dipole moments of charged leptons, which the current experiments have measured with good accuracy. We revisit the para…
Unsupervised and lightly supervised learning in particle physics
Jai Bardhan, Tanumoy Mandal, Subhadip Mitra +2
We review the main applications of machine learning models that are not fully supervised in particle physics, i.e., clustering, anomaly detection, detector simulation, and unfoldin…
Fresh look at the LHC limits on scalar leptoquarks
Arvind Bhaskar, Arijit Das, Tanumoy Mandal +2
The scalar-leptoquark (sLQ) parameter space is well explored experimentally. The direct pair production searches at the LHC have excluded light sLQs almost model agnostically, and…
Pinning down the leptophobic in leptonic final states with Deep Learning
Tanumoy Mandal, Aniket Masaye, Subhadip Mitra +3
A leptophobic that does not couple with the Standard Model leptons can evade the stringent bounds from the dilepton-resonance searches. In our earlier paper [T. Arun et…
Right-handed neutrino pair production via second-generation leptoquarks
Arvind Bhaskar, Yash Chaurasia, Kuldeep Deka +3
No direct experimental constraints exist on Leptoquark (LQ) couplings with quarks and right-handed neutrinos (RHNs). If a LQ dominantly couples to RHNs, it can leave unique signatu…
Machine learning-enhanced search for a vectorlike singlet quark decaying to a singlet scalar or pseudoscalar
Jai Bardhan, Tanumoy Mandal, Subhadip Mitra +1
The presence of a new decay mode relaxes the current mass exclusion limits on vectorlike quarks considerably. We consider the case of a weak-singlet vectorlike quark that can d…
An economical model for -flavour and anomalies from SO(10) grand unification
Ufuk Aydemir, Tanumoy Mandal, Subhadip Mitra +1
We investigate an grand unification scenario where the complex 10-dimensional scalar multiplet, containing the Standard Model (SM) Higgs boson, resides at the TeV…
Production of Singlet dominated scalar(s) at the LHC
Subhadip Bisal, Debottam Das, Swapan Majhi +1
The leading order production of an SM singlet-like scalar has primarily been realized through the gluon fusion process by mixing with the scalar doublet of the model. The…
Leptoquark-assisted Singlet-mediated Di-Higgs Production at the LHC
Arvind Bhaskar, Debottam Das, Bibhabasu De +3
At the LHC, the gluon-initiated processes are considered to be the primary source of di-Higgs production. However, in the presence of a new resonance, the light-quark initiated pro…
Combined explanation of -mass, muon , and anomalies in a singlet-triplet scalar leptoquark model
Arvind Bhaskar, Anirudhan A. Madathil, Tanumoy Mandal +1
In addition to the long-standing anomalies seen in the muon , , and observables by various independent experiments, the CDF Collaboration has found…
Discovery prospects of a vectorlike top partner decaying to a singlet boson
Akanksha Bhardwaj, Kartik Bhide, Tanumoy Mandal +2
The possibility of a vectorlike top partner decaying to a new colourless weak-singlet scalar or pseudoscalar has attracted some attention in the literature. We investigate the prod…
Search for the boson decaying to a right-handed neutrino pair in leptophobic models
Mathew Thomas Arun, Arpan Chatterjee, Tanumoy Mandal +3
The extensions of the Standard Model contain a heavy neutral gauge boson . If leptophobic, the boson can evade the stringent bounds from the dilepton resonance sea…