35 citations · 35 across the 2 of their papers we have counts for
12 papers · 1 filter
Mixed Neutralino Dark Matter in Nonuniversal Gaugino Mass Models
Utpal Chattopadhyay, Debottam Das, D. P. Roy
We have considered nonuniversal gaugino mass models of supergravity, arising from a mixture of two superfield contributions to the gauge kinetic term, belonging to a singlet and a…
Non-zero trilinear parameter in the mSUGRA model - dark matter and collider signals at Tevatron and LHC
Utpal Chattopadhyay, Debottam Das, Amitava Datta +1
Phenomenologically viable and interesting regions of parameter space in the minimal super-gravity (mSUGRA) model with small and small consistent with the WMAP data…
Looking for a heavy wino LSP in collider and dark matter experiments
Utpal Chattopadhyay, Debottam Das, Partha Konar +1
We investigate the phenomenology of a wino LSP as obtained in AMSB and some string models. The WMAP constraint on the DM relic density implies a wino LSP mass of 2.0-2.3 TeV. We fi…
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…
Testing SUGRA Models
Utpal Chattopadhyay
A brief review is given of the ways of testing SUGRA unified models and a class of string models using data from precision electroweak experiments, Yukawa unification constraints,…
Upper limits on sparticle masses from WMAP dark matter constraints with modular invariant soft breaking
Utpal Chattopadhyay, Pran Nath
An analysis of dark matter within the framework of modular invariant soft breaking is given. In such scenarios inclusion of the radiative electroweak symmetry breaking constraint d…