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13 papers · 2 filters
Can Dark Matter be an artifact of extended theories of gravity?
Sayantan Choudhury, Manibrata Sen, Soumya Sadhukhan
In this article, we propose different background models of extended theories of gravity, which are minimally coupled to the SM fields, to explain the possibility of genesis of dark…
Probing at the LHC in the paradigm of R-parity violating MSSM
Amit Chakraborty, Sabyasachi Chakraborty
The measurement of the anomalous magnetic moment of the muon exhibits a long standing discrepancy compared to the Standard model prediction. In this paper, we concentrate on this i…
Status of the 98 - 125 GeV Higgs scenario with updated LHC-8 data
Biplob Bhattacherjee, Manimala Chakraborti, Amit Chakraborty +2
In the context of minimal supersymmetric standard model (MSSM), we discuss the possibility of the lightest Higgs boson with mass GeV to be consistent with the ex…
Temporal Instability Enables Neutrino Flavor Conversions Deep Inside Supernovae
Basudeb Dasgupta, Alessandro Mirizzi
We show that a self-interacting neutrino gas can spontaneously acquire a non-stationary pulsating component in its flavor content, with a frequency that can exactly cancel the "mul…
Light Higgs Bosons in NMSSM at the LHC
Monoranjan Guchait, Jacky Kumar
The next-to-minimal supersymmetric standard model (NMSSM) with an extended Higgs sector offers one of the Higgs boson as the Standard model (SM) like Higgs with a mass around 125 G…
Looking for lepton flavour violation in supersymmetry at the LHC
Monoranjan Guchait, Abhishek M. Iyer, Rickmoy Samanta
We consider models of supersymmetry which can incorporate sizeable mixing between different generations of sfermions. While the mixing is constrained by the non-observation of vari…
Sterile Neutrinos with Secret Interactions - Lasting Friendship with Cosmology
Xiaoyong Chu, Basudeb Dasgupta, Joachim Kopp
Sterile neutrinos with mass ~1 eV and order 10% mixing with active neutrinos have been proposed as a solution to anomalies in neutrino oscillation data, but are tightly constrained…
Status of MSSM Higgs Sector using Global Analysis and Direct Search Bounds, and Future Prospects at the HL-LHC
Biplob Bhattacherjee, Amit Chakraborty, Arghya Choudhury
In this paper, we search for the regions of the phenomenological minimal supersymmetric standard model (pMSSM) parameter space where one can expect to have moderate Higgs mixing an…
Froissart Bound on Inelastic Cross Section Without Unknown Constants
André Martin, S. M. Roy
Assuming that axiomatic local field theory results hold for hadron scattering, André Martin and S. M. Roy recently obtained absolute bounds on the D-wave below threshold for pion-p…
Probing the NMSSM via Higgs boson signatures from stop cascade decays at the LHC
Amit Chakraborty, Dilip Kumar Ghosh, Subhadeep Mondal +2
Higgs signatures from the cascade decays of light stops are an interesting possibility in the next to minimal supersymmetric standard model (NMSSM). We investigate the potential re…
Bulk RS models, Electroweak Precision tests and the 125 GeV Higgs
Abhishek M. Iyer, K. Sridhar, Sudhir K. Vempati
We present upto date electroweak fits of various Randall Sundrum (RS) models. We consider the bulk RS model, deformed RS and the custodial RS models. For the bulk RS case we find t…
Phenomenology of renormalons and the OPE from lattice regularization: the gluon condensate and the heavy quark pole mass
Gunnar S. Bali, Antonio Pineda
We study the operator product expansion of the plaquette (gluon condensate) and the self-energy of an infinitely heavy quark. We first compute their perturbative expansions to orde…
New Supersoft Supersymmetry Breaking Operators and a Solution to the Problem
Ann E. Nelson, Tuhin S. Roy
We propose the framework, "generalized supersoft supersymmetry breaking". "Supersoft" models, with -type supersymmetry breaking and heavy Dirac gauginos, are considerably less c…