36 citations · 70 across the 14 of their papers we have counts for
15 papers · 1 filter
Interpreting the High-Recoil LUX-ZEPLIN Event with Bino-/Singlino-like and Higgsino Dark Matter
Subhojit Roy, Pedro Schwaller, Carlos E. M. Wagner
The LUX-ZEPLIN (LZ) experiment has recently reported a nuclear-recoil candidate at keV. We study two supersymmetric interpretations based on distinct neutralino coup…
Axion-like particle at the 10 GeV scale: Higgs decays to wide jets and photons
Bogdan A. Dobrescu, Subhojit Roy
If axion-like particles (ALPs) exist, they may have renormalizable couplings only to the Higgs boson () or to fields beyond the Standard Model. An ALP lighter than about…
Alignment and Enhanced Multi-Higgs Production
Subhojit Roy, Carlos E. M. Wagner
Contrary to conventional expectations, we identify a class of extended scalar-sector scenarios in which final states with two, three, or four Higgs bosons constitute the leading di…
Dark Matter and Electroweak Baryogenesis with Spontaneous Violation in the Early Universe
Subhojit Roy
Dark matter (DM) and the baryon asymmetry of the universe (BAU) are among the most compelling indications of physics beyond the Standard Model. We revisit the inelastic Higgs-porta…
Shedding Light on Dark Matter at the LHC with Machine Learning
Ernesto Arganda, Martín de los Rios, Andres D. Perez +3
We investigate a WIMP dark matter (DM) candidate in the form of a singlino-dominated lightest supersymmetric particle (LSP) within the -symmetric Next-to-Minimal Supersymmetri…
R-parity violation and 8 TeV four-jet events at the LHC
Pedro Bittar, Subhojit Roy, Carlos E. M. Wagner
The CMS Collaboration at the Large Hadron Collider (LHC) has observed two four-jet events with a total invariant mass of about 8 TeV; within each event, the jets can be paired into…
Gamma-Rays and Gravitational Waves from Inelastic Higgs Portal Dark Matter
Dan Hooper, Gordan Krnjaic, Duncan Rocha +1
We explore a simple and predictive dark matter scenario involving a complex scalar field, , coupled to the Higgs portal with no additional field content. In the UV, the field po…
Self Consistent Thermal Resummation: A Case Study of the Phase Transition in 2HDM
Pedro Bittar, Subhojit Roy, Carlos E. M. Wagner
An accurate description of the scalar potential at finite temperature is crucial for studying cosmological first-order phase transitions (FOPT) in the early Universe. At finite tem…
Testing the lepton content of the proton at HERA and EIC
Leandro Da Rold, Anibal D. Medina, Subhojit Roy +1
Although protons are baryons with an overall vanishing lepton number, they possess a non-trivial leptonic content arising from quantum fluctuations which can be described by lepton…
A 17 MeV pseudoscalar and the LSND, MiniBooNE and ATOMKI anomalies
Waleed Abdallah, Raj Gandhi, Tathagata Ghosh +3
In the absence of any new physics signals at the Large Hadron Collider (LHC), anomalous results at low energy experiments have become the subject of increased attention. We focus o…
Dark Matter searches with photons at the LHC
Subhojit Roy, Carlos E. M. Wagner
We unveil blind spot regions in dark matter (DM) direct detection (DMDD), for weakly interacting massive particles with a mass around a few hundred~GeV that may reveal interesting…
Dilution of Dark Matter Relic abundance due to First Order Electroweak Phase Transition
Subhojit Roy
We investigate the effect of a first-order electroweak phase transition (FOEWPT), which is one of the prerequisites for electroweak baryogenesis, on the thermal relic abundance of…
Interplay among gravitational waves, dark matter and collider signals in the singlet scalar extended type-II seesaw model
Purusottam Ghosh, Tathagata Ghosh, Subhojit Roy
We study the prospect of simultaneous explanation of tiny neutrino masses, dark matter (DM), and the observed baryon asymmetry of the Universe in a -symmetric complex singlet…
Hunting ewinos and a light scalar of -NMSSM with a bino-like dark matter in top squark decays at the LHC
AseshKrishna Datta, Monoranjan Guchait, Arnab Roy +1
We study the prospects of a simultaneous hunt at the Large Hadron Collider (LHC) of relatively light electroweakinos and a singlet-like scalar of the -symmetric Next-to-Minima…
Electroweak Phase Transition in the -invariant NMSSM: Implications of LHC and Dark matter searches and prospects of detecting the gravitational waves
Arindam Chatterjee, AseshKrishna Datta, Subhojit Roy
We study in detail the viability and the patterns of a strong first-order electroweak phase transition as a prerequisite to electroweak baryogenesis in the framework of -invar…