71 citations · 238 across the 21 of their papers we have counts for
22 papers
Searching for charged Higgs bosons in top decays via the channel
Saiyad Ashanujjaman, Guglielmo Coloretti, Andreas Crivellin +2
Rare top-quark decays offer a sensitive probe of charged Higgs bosons with masses below the top mass, owing to the large production rate at the LHC and the distinctive fi…
Indications for New Higgs Bosons
Andreas Crivellin, Saiyad Ashanujjaman, Sumit Banik +2
After the Higgs discovery, the question of whether particles beyond those of the Standard Model exist is more pressing than ever. In this context, the scalar sector is particularly…
Precision Higgs Boson Probe of Type-II Seesaw Models
Saiyad Ashanujjaman, P. S. Bhupal Dev, Jihong Huang +1
Despite direct searches at the LHC excluding tripletlike Higgs bosons up to several hundred GeV over much of the type-II seesaw model parameter space, parts of it -- most notably t…
Vacuum structure of the Babu-Nandi-Tavartkiladze model of neutrino mass generation
Saiyad Ashanujjaman, Siddharth P. Maharathy
We analyze the vacuum structure of the Babu--Nandi--Tavartkiladze (BNT) model of neutrino mass generation, in which the Standard Model is extended by an scalar quadruplet…
Constraining with in the Low-Mass Region
Saiyad Ashanujjaman, Guglielmo Coloretti, Andreas Crivellin +2
The decay is a characteristic signal of two-Higgs-doublet models (2HDMs), where and lie primarily within the same multiplet, leading to a coupling of or…
Searching for a Charged Higgs Boson in Top-Quark Decays via the Mode
Saiyad Ashanujjaman, Andreas Crivellin, Siddharth P. Maharathy +1
Top-quark decays are sensitive probes of light charged Higgs bosons () due to the sizable production cross section at the LHC in conjunction with their distinct ex…
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…
Kaon Physics: A Cornerstone for Future Discoveries
Jason Aebischer, Atakan Tugberk Akmete, Riccardo Aliberti +153
The kaon physics programme, long heralded as a cutting-edge frontier by the European Strategy for Particle Physics, continues to stand at the intersection of discovery and innovati…
LHC Signatures of the Generic Georgi-Machacek Model
Saiyad Ashanujjaman, Andreas Crivellin, Siddharth P. Maharathy +1
Vector-boson fusion production of new Higgs bosons decaying into pairs of electroweak gauge bosons (, and ) is a smoking-gun signature of the Georgi-Machacek…
Anatomy of the Real Higgs Triplet Model
Saiyad Ashanujjaman, Sumit Banik, Guglielmo Coloretti +3
In this article, we examine the Standard Model extended by a real Higgs triplet, the SM. It contains a -even neutral Higgs () and two charged Higgs bosons ($Δ^\pm…
Unveiling the Secrets of New Physics Through Top Quark Tagging
Rameswar Sahu, Saiyad Ashanujjaman, Kirtiman Ghosh
The ubiquity of top-rich final states in the context of beyond the Standard Model (BSM) searches has led to their status as extensively studied signatures at the LHC. Over the past…
Growing Evidence for a Higgs Triplet
Andreas Crivellin, Saiyad Ashanujjaman, Sumit Banik +3
Despite intensive searches at the LHC, no new fundamental particle has been discovered since the discovery of the 125 GeV Higgs boson. In general, a new physics discovery is challe…
Explaining the Excesses at 151.5 GeV via the Drell-Yan Production of a Higgs Triplet
Saiyad Ashanujjaman, Sumit Banik, Guglielmo Coloretti +3
The multi-lepton anomalies and searches for the associated production of a narrow resonance indicate the existence of a 151 GeV Higgs with a significance of and $>3.…
triplet scalar as the origin of the 95 GeV excess?
Saiyad Ashanujjaman, Sumit Banik, Guglielmo Coloretti +3
We explore the possibility that an triplet scalar with hypercharge is the origin of the GeV diphoton excess. For a small mixing angle with the Standard Model…
Probing compressed mass spectra in the type-II seesaw model at the LHC
Saiyad Ashanujjaman, Siddharth P. Maharathy
Despite a great deal of effort in searching for the triplet-like Higgses in the type-II seesaw model, evidence for their production is yet to be found at the LHC. As such, one migh…
Low-mass doubly-charged Higgs bosons at LHC
Saiyad Ashanujjaman, Kirtiman Ghosh, Rameswar Sahu
Search for light (within the mass range 84-200 GeV) doubly-charged Higgs bosons decaying into a pair of W-bosons has been deemed challenging using the conventional LHC searches wit…
Type-II see-saw: searching the LHC elusive low-mass triplet-like Higgses at colliders
Saiyad Ashanujjaman, Kirtiman Ghosh, Katri Huitu
While the triplet-like Higgses up to a few hundred GeV masses are already excluded for a vast region of the model parameter space from the LHC searches, strikingly, there is a regi…
Search for exotic leptons in final states with two or three leptons and fat-jets at 13 TeV LHC
Saiyad Ashanujjaman, Debajyoti Choudhury, Kirtiman Ghosh
Exotic leptons in large gauge multiplets, appearing in many scenarios beyond the Standard Model (SM), can be produced at the LHC in pairs or association. Owing to their large masse…
Type-III see-saw: Search for triplet fermions in final states with multiple leptons and fat-jets at 13 TeV LHC
Saiyad Ashanujjaman, Kirtiman Ghosh
The type-III see-saw model holding out a riveting rationale for the minuscule neutrino masses caters for a well-to-do phenomenology at the Large Hadron Collider (LHC). Several sear…
Revisiting Type-II see-saw: Present Limits and Future Prospects at LHC
Saiyad Ashanujjaman, Kirtiman Ghosh
The type-II see-saw mechanism based on the annexation of the Standard Model by weak gauge triplet scalar field proffers a natural explanation for the very minuteness of neutrino ma…
Type-III Seesaw: Phenomenological Implications of the Information Lost in Decoupling from High-Energy to Low-Energy
Saiyad Ashanujjaman, Kirtiman Ghosh
The type-III seesaw seems to explain the very minuteness of neutrino masses readily and naturally. The high-energy see-saw theories usually involve a larger number of effective par…
The Genuine Type-V Seesaw Model: Phenomenological Introduction
Saiyad Ashanujjaman, Kirtiman Ghosh
We study a model which generates Majorana neutrino masses at tree-level via low-energy effective operator with mass-dimension-9. Introduction of such a higher dimensional operator…