95 citations · 508 across the 34 of their papers we have counts for
34 papers
Radiative symmetry breaking in a gauged Zee-Babu model and its gravitational wave imprints
Indra Kumar Banerjee, Nabarun Chakrabarty, Ujjal Kumar Dey
We construct a classically scale invariant version of the Zee-Babu model governed by an gauge symmetry wherein three right handed neutrinos with identical gauge charge…
Radiative vertices in flavour conserving three Higgs-doublet scenarios
Nabarun Chakrabarty, Indrani Chakraborty
A detailed calculation of the radiatively induced vertices is carried out in the context of flavour conserving three Higgs doublet models (3HDMs). The Type-II, le…
Fermi-ball in a multicomponent dark matter framework and its gravitational wave signatures
Nabarun Chakrabarty, Indrani Chakraborty, Himadri Roy
It has been known that under-abundant dark matter density of an inert doublet can be replenished by an additional dark matter component, say, a fermion. We find that such a scenari…
Single-step first order phase transition and gravitational waves in a SIMP dark matter scenario
Nabarun Chakrabarty, Himadri Roy, Tripurari Srivastava
We investigate the non-zero temperature dynamics of a sub-GeV dark matter scenario freezing-out via self-interactions. As a prototype, we take up the case of a scalar dark matter s…
Limiting multiple hyperchargeless scalar triplets using electroweak phase transition and other constraints
Nabarun Chakrabarty
While an additional scalar multiplet over and above the Standard Model can lead to a strong electroweak phase transition, depending on its quantum numbers, it also potentially conf…
The muon and -mass anomalies explained and the electroweak vacuum stabilised by extending the minimal Type-II seesaw
Nabarun Chakrabarty
The recent precise measurement of the -mass by the CDF II collaboration is indicative of new physics beyond the Standard Model. On the other hand, a resolution of the longstandi…
Thermally corrected masses and freeze-in dark matter: a case study
Nabarun Chakrabarty, Partha Konar, Rishav Roshan and +1
If coupled \emph{feebly} to the Standard Model bath, a dark matter can evade the severe constraints from the direct search experiments. At the same time, such interactions help pro…
Muon g-2 in a Type-X 2HDM assisted by inert scalars: probing at the LHC
Nabarun Chakrabarty
A scenario augmenting the well known Type-X Two-Higgs doublet model (2HDM) with an additional inert doublet is proposed. The Type-X 2HDM is known to offer a solution to the muon $g…
Two Component Doublet-Triplet Scalar Dark Matter stabilising the Electroweak vacuum
Nabarun Chakrabarty, Rishav Roshan, Arunansu Sil
A two-component scalar DM scenario comprising an additional scalar doublet and a = 0 scalar triplet is proposed. Key features of the ensuing dark matter phenomenology are highl…
Relic density of dark matter in the inert doublet model beyond leading order for the low mass region: 4. The Higgs resonance region
Shankha Banerjee, Fawzi Boudjema, Nabarun Chakrabarty +1
One-loop electroweak corrections to the annihilation cross-sections of dark matter in the Higgs resonance region of the inert doublet model (IDM) are investigated. The procedure of…
Relic density of dark matter in the inert doublet model beyond leading order for the low mass region: 3. Annihilation in 3-body final state
Shankha Banerjee, Fawzi Boudjema, Nabarun Chakrabarty +1
We perform the first one-loop electroweak corrections for processes for dark matter annihilation. These are the dominant processes that enter the computation of the relic…
Relic density of dark matter in the inert doublet model beyond leading order for the low mass region: 2. Co-annihilation
Shankha Banerjee, Fawzi Boudjema, Nabarun Chakrabarty +1
We examine the relic density of the light mass dark matter region in the inert doublet model (IDM) when the dominant process is due to co-annihilation between the lightest neutral…
Relic density of dark matter in the inert doublet model beyond leading order for the low mass region: 1. Renormalisation and constraints
Shankha Banerjee, Fawzi Boudjema, Nabarun Chakrabarty +1
The present paper is the first in a series that addresses the calculation of the full one-loop corrections of dark matter (DM) annihilation cross-sections in the low mass region of…
Impact of dark scalars on the radiative vertex
Nabarun Chakrabarty
An vertex, i.e, the interaction connecting a singly charged physical scalar to the gauge bosons is absent at the tree level in a scalar sector comprising onl…
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…
Doubly charged scalars and vector-like leptons confronting the muon g-2 anomaly and Higgs vacuum stability
Nabarun Chakrabarty
The present work introduces new scalar and fermionic degrees of freedom to the Standard Model. While the scalar sector is augmented by a complex scalar triplet and a doubly charged…
Fingerprinting the contribution of colored scalars to the vertex
Nabarun Chakrabarty, Indrani Chakraborty, Dilip Kumar Ghosh
Color-octet scalars arise in various Grand Unification scenarios and also in other models of new physics. They are also postulated for minimal flavour violation. Purely phenomenolo…
Relic density of Dark Matter in the Inert Doublet Model beyond Leading Order. I) The Heavy Mass Case
Shankha Banerjee, Fawzi Boudjema, Nabarun Chakrabarty +2
A full renormalisation of the Inert Doublet Model (IDM) is presented and exploited for a precise calculation of the relic density of Dark Matter (DM) at one-loop. In this first pap…
Flavour-alignment in an -symmetric Higgs sector and its RG-behaviour
Nabarun Chakrabarty, Indrani Chakraborty
A three Higgs-doublet model admitting an -symmetry can predict the observed pattern of the quark masses and their mixings. However the same symmetry also introduces potential…
Charged scalars confronting neutrino mass and muon g-2 anomaly
Nabarun Chakrabarty, Cheng-Wei Chiang, Takahiro Ohata +1
The present work introduces two possible extensions of the Standard Model Higgs sector. In the first case, the Zee-Babu type model for the generation of neutrino mass is augmented…
Ameliorating the Higgs mass fine-tuning problem with multi-Higgs doublet models
Nabarun Chakrabarty, Indrani Chakraborty
With no conclusive signal till date of the minimal supersymmetric and extra dimensional models at the Large Hadron Collider (LHC), the issue of fine-tuning of the Higgs mass still…
High-scale validity of a two Higgs doublet scenario: predicting collider signals
Nabarun Chakrabarty, Biswarup Mukhopadhyaya
It is possible to ameliorate the Higgs vacuum stability problem by switching over to two Higgs doublet models (2HDM), ensuring a stable electroweak vacuum up to the Planck scale, e…
A revisit to scalar dark matter with radiative corrections
Shankha Banerjee, Nabarun Chakrabarty
Extended Higgs sectors have been studied extensively in context of dark matter phenomenology in tandem with other aspects. In this study, we compute radiative corrections to the da…
Phenomenology of additional scalar bosons at the LHC
Mukesh Kumar, Stefan von Buddenbrock, Nabarun Chakrabarty +7
The confirmation of the Higgs boson in Run I data at the Large Hadron Collider (LHC) and the excesses in recent Run II data suggest scenarios beyond the Standard Model (SM). We pur…