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  • Discussing 125 GeV and 95 GeV excess in light radion model 
    SACHDEVA, DIVYA; Sadhukhan, Soumya (American Physical Society, 2020-03)
    Even if the LHC observations are consistent with the Standard model (SM), current LHC results are not precise enough to rule out the presence of new physics. Taking a contrarian view of the SM Higgs fandom, we look out for ...
  • Constraints on Axion-Lepton coupling from Big Bang Nucleosynthesis 
    GHOSH, DIPTIMOY; SACHDEVA, DIVYA (IOP Publishing, 2020-10)
    In this article, we study the implications of the coupling between Axion-Like-Particles (ALPs) and Leptons to cosmology in particular, the Big Bang Nucleosynthesis (BBN) . We show that the BBN, through the constraint on ...
  • Dark matter, muon anomalous magnetic moment, and the XENON1T excess 
    Choudhury, Debajyoti; Maharana, Suvam; Sahdev, Vandana; SACHDEVA, DIVYA (American Physical Society, 2021-01)
    A very economic scenario with just three extra scalar fields beyond the Standard Model is invoked to explain the muon anomalous magnetic moment, the requisite relic abundance of dark matter as well as the XENON1T excess ...
  • Constraining light dark photons from GW190517_055101 and GW190426_152155 
    GHOSH, DIPTIMOY; SACHDEVA, DIVYA (American Physical Society, 2021-05)
    Ultralight dark photons predicted in several Standard Model extensions can trigger the superradiant instability around rotating black holes (BHs) if their Compton wavelength is comparable to the BH radius. Consequently, ...
  • Exclusion limits on dark matter-neutrino scattering cross section 
    GHOSH, DIPTIMOY; GUHA, ATANU; SACHDEVA, DIVYA (American Physical Society, 2022-05)
    We derive new constraints on combination of dark matter-electron cross section (σχe) and dark matter-neutrino cross section (σχν) utilizing the gain in kinetic energy of the dark matter (DM) particles due to scattering ...
  • Future constraints on primordial black holes from XGIS-THESEUS 
    GHOSH, DIPTIMOY; SACHDEVA, DIVYA; SINGH, PRANITI (American Physical Society, 2022-07)
    Current observations allow primordial black holes (PBHs) in asteroid mass range 1017–1022  g to constitute the entire dark matter energy density (barring a small mass range constrained by 21-cm observations). In this work, ...
  • RK(*) from RPV-SUSY sneutrinos 
    BARDHAN, DEBJYOTI; GHOSH, DIPTIMOY; SACHDEVA, DIVYA (Elsevier B.V., 2023-01)
    We analyze the lepton flavor universality violation (LFV) in process b -> st+t-in an R-parity violating supersymmetric (RPV-SUSY) scenario. The most recent update on RK from the LHCb collaboration sug-gests approximately ...

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