670 citations · 4.1k across the 58 of their papers we have counts for
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WIMP and FIMP Dark Matter in Singlet-Triplet Fermionic Model
Geneviève Bélanger, Sandhya Choubey, Rohini M. Godbole +3
We present an extension of the SM involving three triplet fermions, one triplet scalar and one singlet fermion, which can explain both neutrino masses and dark matter. One triplet…
Co-scattering in micrOMEGAs: a case study for the singlet-triplet dark matter model
Gael Alguero, Genevieve Belanger, Sabine Kraml +1
In scenarios with very small dark matter (DM) couplings and small mass splittings between the DM and other dark sector particles, so-called "co-scattering" or "conversion-driven fr…
WIMP and FIMP dark matter in the inert doublet plus singlet model
G. Belanger, A. Mjallal, A. Pukhov
We consider multi-component dark matter in a model where one dark matter component is feebly interacting (FIMP) while the second is weakly interacting (WIMP). The model contains an…
Two dark matter candidates: the case of inert doublet and singlet scalars
G. Belanger, A. Mjallal, A. Pukhov
We consider a multi-component dark matter model where the dark sector contains a scalar doublet and a complex scalar singlet. We impose a discrete symmetry to ensure such tha…
Status of low mass LSP in SUSY
Rahool Kumar Barman, Genevieve Belanger, Rohini M. Godbole
In this article we review the case for a light () neutralino and sneutrino being a viable Dark Matter (DM) candidate in Supersymmetry(SUSY). To that end we recapit…
Dark Matter Abundance from Sequential Freeze-in Mechanism
Genevieve Belanger, Cedric Delaunay, Alexander Pukhov +1
We present a thorough analysis of the sequential freeze-in mechanism for dark matter production in the early universe. In this mechanism the dark matter relic density results from…
Probing CP nature of a mediator in associated production of dark matter with single top quark
Genevieve Belanger, Rohini M. Godbole, Charanjit K. Khosa +1
We consider associated production of dark matter with single top quark, in a simplified dark matter model with spin-0 mediators. The produced top quark is polarized and the polariz…
Long-lived stau, sneutrino dark matter and right-slepton spectrum
Shankha Banerjee, Geneviève Bélanger, Avirup Ghosh +1
The minimal supersymmetric (SUSY) standard model (MSSM) augmented by right chiral sneutrinos may lead to one such sneutrino serving as the lightest supersymmetric particle and a no…
micrOMEGAs5.0 : freeze-in
Geneviève Bélanger, Fawzi Boudjema, Andreas Goudelis +2
We present a major upgrade of the micrOMEGAs dark matter code to compute the abundance of feebly interacting dark matter candidates through the freeze-in mechanism in generic exten…
Cornering pseudoscalar-mediated dark matter with the LHC and cosmology
Shankha Banerjee, Daniele Barducci, Geneviève Bélanger +3
Models in which dark matter particles communicate with the visible sector through a pseudoscalar mediator are well-motivated both from a theoretical and from a phenomenological sta…
The invisible decay of Higgs boson in the context of a thermal and non-thermal relic in MSSM
Rahool Kumar Barman, Genevieve Belanger, Biplob Bhattacherjee +3
We study the decay of 125 GeV Higgs boson to light LSP neutralino in the phenomenological minimal supersymmetric standard model in the context of collider searches and astrophysica…
Implications of a High-Mass Diphoton Resonance for Heavy Quark Searches
Shankha Banerjee, Daniele Barducci, Geneviève Bélanger +1
Heavy vector-like quarks coupled to a scalar will induce a coupling of this scalar to gluons and possibly (if electrically charged) photons. The decay of the heavy quark into $…
One-loop renormalisation of the NMSSM in SloopS : 1. the neutralino-chargino and sfermion sectors
G. Belanger, V. Bizouard, F. Boudjema +1
We have completed the one-loop renormalisation of the Next-to-Minimal Supersymmetric Standard Model (NMSSM) allowing for and comparing between different renormalisation schemes. A…
Signatures of sneutrino dark matter in an extension of the CMSSM
Shankha Banerjee, Geneviève Bélanger, Biswarup Mukhopadhyaya +1
Current data (LHC direct searches, Higgs mass, dark matter-related bounds) severely affect the constrained minimal SUSY standard model (CMSSM) with neutralinos as dark matter candi…
Status and prospects of the nMSSM after LHC Run-1
D. Barducci, G. Bélanger, C. Hugonie +1
The new minimal supersymmetric standard model (nMSSM), a variant of the general next to minimal supersymmetric standard model (NMSSM) without symmetry, features a naturally l…
Light stop in the MSSM after LHC Run 1
Genevieve Belanger, Diptimoy Ghosh, Rohini Godbole +1
The discovery of a Higgs boson with a mass of 126 GeV at the LHC when combined with the non-observation of new physics both in direct and indirect searches imposes strong constrain…
Dilepton constraints in the Inert Doublet Model from Run 1 of the LHC
G. Belanger, B. Dumont, A. Goudelis +3
Searches in final states with two leptons plus missing transverse energy, targeting supersymmetric particles or invisible decays of the Higgs boson, were performed during Run 1 of…
The Dark Side of Electroweak Naturalness Beyond the MSSM
Genevieve Belanger, Cedric Delaunay, Andreas Goudelis
Weak scale supersymmetry (SUSY) remains a prime explanation for the radiative stability of the Higgs field. A natural account of the Higgs boson mass, however, strongly favors exte…
Isospin-violating dark matter from a double portal
G. Belanger, A. Goudelis, J. -C. Park +1
We study a simple model that can give rise to isospin-violating interactions of Dirac fermion asymmetric dark matter to protons and neutrons through the interference of a scalar an…
LHC constraints on light neutralino dark matter in the MSSM
Genevieve Belanger, Guillaume Drieu La Rochelle, Beranger Dumont +3
Light neutralino dark matter can be achieved in the Minimal Supersymmetric Standard Model if staus are rather light, with mass around 100 GeV. We perform a detailed analysis of the…
Probing the flavor violating scalar top quark signal at the LHC
Genevieve Belanger, Diptimoy Ghosh, Rohini Godbole +2
The Large Hadron Collider(LHC) has completed its run at 8 TeV with the experiments ATLAS and CMS having collected about 25 of data each. Discovery of a light Higgs bo…
Top Polarization in Sbottom Decays at the LHC
Genevieve Belanger, Rohini M. Godbole, Sabine Kraml +1
We perform a comprehensive analysis of the polarization of the top quarks originating from sbottom-pair production at the LHC, followed by sbottom decays to top+chargino. We study…
Status of invisible Higgs decays
G. Belanger, B. Dumont, U. Ellwanger +2
We analyze the extent to which the LHC and Tevatron results as of the end of 2012 constrain invisible (or undetected) decays of the Higgs boson-like state at ~ 125 GeV. To this end…
Higgs Couplings at the End of 2012
G. Belanger, B. Dumont, U. Ellwanger +2
Performing a fit to all publicly available data, we analyze the extent to which the latest results from the LHC and Tevatron constrain the couplings of the Higgs boson-like state a…