Arghya Choudhury

The electroweak sector of the pMSSM in the light of LHC - 8 TeV and other data

A bstractUsing the chargino-neutralino and slepton search results from the LHC in conjunction with the WMAP/PLANCK and (g − 2)μ data, we constrain several generic pMSSM models with decoupled strongly interacting sparticles, heavier Higgs bosons and characterized by different hierarchies among the EW sparticles. We find that some of them are already under pressure and this number increases if bounds from direct detection experiments like LUX are taken into account, keeping in mind the associated uncertainties. The XENON1T experiment is likely to scrutinize the remaining models closely. Analysing models with heavy squarks, a light gluino along with widely different EW sectors, we show that the limits on mg˜

Non-universal gaugino mass models under the lamppost of muon (g-2)

{m}_{\tilde{g}}

NEW LIMITS ON TOP SQUARK NLSP FROM ATLAS 4.7 fb-1 DATA

are not likely to be below 1.1 TeV, if a multichannel analysis of the LHC data is performed. Using this light gluino scenario we further illustrate that in future LHC experiments the models with different EW sectors can be distinguished from each other by the relative sizes of the n-leptons + m-jets + T signals for different choices of n.

Role of supersymmetric heavy Higgs boson production in the self-coupling measurement of 125 GeV Higgs boson at the LHC

In this work we study the collider phenomenology of a compressed supersymmetric model with gluino (e) and the lightest neutralino (e � 0 ). All other sparticles are assumed to be heavy. We consider gluino pair production at the 14 TeV LHC and present the mass reach of gluino as a function of mass splitting between gluino and the the lightest neutralino. We find that the gluino mass below 1 TeV can be excluded at 95% CL with integrated luminosity of 100 fb 1 for extreme degenerate case where mass separation between gluino and the lightest neutralino is about 20 GeV. On the other hand, the lower bound on the mass of gluino increases to 1.2 - 1.3 TeV if the mass splitting between the gluino and e � 0 is about 200 GeV. This result shows that for degenerate gluino, the current mass limit may extend approximately 400-500 GeV at 14 TeV LHC.

Less-simplified models of dark matter for direct detection and the LHC

A bstractIn unified N=1

SUSY signals with small and large trilinear couplings at the LHC 7 TeV runs and neutralino dark matter

\mathcal{N}=1