212 citations · 3.3k across the 141 of their papers we have counts for
6 papers · 1 filter
Looking for a Heavy Higgsino LSP in Collider and Dark Matter Experiments
Utpal Chattopadhyay, Debajyoti Choudhury, Manuel Drees +2
A large part of the mSUGRA parameter space satisfying the WMAP constraint on the dark matter relic density corresponds to a higgsino LSP of mass TeV. We find a promising…
Large evolution of the bilinear Higgs coupling parameter in SUSY models and reduction of phase sensitivity
Utpal Chattopadhyay, Debajyoti Choudhury, Debottam Das
The phases in a generic low-energy supersymmetric model are severely constrained by the experimental upper bounds on the electric dipole moments of the electron and the neutron. Co…
Signatures of anomalous VVH interactions at a linear collider
Sudhansu S. Biswal, Debajyoti Choudhury, Rohini M. Godbole +1
We examine, in a model independent way, the sensitivity of a Linear Collider to the couplings of a light Higgs boson to gauge bosons. Including the possibility of CP violation, we…
NLO Corrections to lepton pair production beyond the Standard Model at hadron colliders
Debajyoti Choudhury, Swapan Majhi, V. Ravindran
We consider lepton pair production at a hadron collider in a class of effective theories with the relevant operators being four-fermion contact interaction. Despite the nonrenormal…
Looking for the Top-squark at the Tevatron with four jets
Debajyoti Choudhury, Madhumita Datta, Manas Maity
The scalar partner of the top quark is relatively light in many models of supersymmetry breaking. We study the production of top squarks (stops) at the Tevatron collider and their…
Tagging Sneutrino Resonances at a Linear Collider with Associated Photons
Debajyoti Choudhury, Santosh Kumar Rai, Sreerup Raychaudhuri
Sneutrino resonances at a high energy linear e+e- collider may be one of the clearest signals of supersymmetry without R-parity, especially when the R-parity-violating coupling is…