689 citations · 986 across the 12 of their papers we have counts for
12 papers
Rare Top-quark Decays to Higgs boson in MSSM
A. Dedes, M. Paraskevas, J. Rosiek +2
In full one-loop generality and in next-to-leading order in QCD, we study rare top to Higgs boson flavour changing decay processes with quarks, in the general MS…
Proton Stability in and GUTs
A. E. Faraggi, M. Paraskevas, J. Rizos +1
We consider explicit unified models based on the flipped and gauge groups in which gauge mediated proton decay operators are suppressed at…
On Discrete R-Symmetries in MSSM and its Extensions
M. Paraskevas, K. Tamvakis
We study possible anomaly-free discrete R-symmetries that avoid the μ-problem and the dangerous D\leq 5 operators considering charge assignments that do not commute with the tradit…
Bimaximal mixing from lopsided neutrinos
M. Paraskevas, K. Tamvakis
We consider the problem of neutrino masses and mixing within the general framework of standard (type-I) seesaw models leading to three light neutrinos. Under the assumption of a hi…
Supersymmetric Inflation with the Ordinary Higgs?
K. Tamvakis
We consider a model of D-term inflation in which the inflaton coincides with the standard Higgs doublet. Non-renormalizable terms are controlled by a discrete R-symmetry of the sup…
Singularity-free cosmological solutions in quadratic gravity
P. Kanti, J. Rizos, K. Tamvakis
We study a general field theory of a scalar field coupled to gravity through a quadratic Gauss-Bonnet term . The coupling function has the form , where …