132 citations · 369 across the 15 of their papers we have counts for
15 papers
Proposal for the validation of Monte Carlo implementations of the standard model effective field theory
Gauthier Durieux, Ilaria Brivio, Fabio Maltoni +38
We propose a procedure to cross-validate Monte Carlo implementations of the standard model effective field theory. It is based on the numerical comparison of squared amplitudes com…
SmeftFR -- Feynman rules generator for the Standard Model Effective Field Theory
A. Dedes, M. Paraskevas, J. Rosiek +2
We present SmeftFR, a Mathematica package designed to generate the Feynman rules for the Standard Model Effective Field Theory (SMEFT) including the complete set of gauge invariant…
Effective Field Theories in R_xi gauges
M. Misiak, M. Paraskevas, J. Rosiek +2
In effective quantum field theories, higher dimensional operators can affect the canonical normalization of kinetic terms at tree level. These contributions for scalars and gauge b…
The decay in the Standard-Model Effective Field Theory
A. Dedes, M. Paraskevas, J. Rosiek +2
Assuming that new physics effects are parametrized by the Standard-Model Effective Field Theory (SMEFT) written in a complete basis of up to dimension-6 operators, we calculate the…
Gauge fixing the Standard Model Effective Field Theory
Andreas Helset, Michael Paraskevas, Michael Trott
We gauge fix the Standard Model Effective Field Theory in a manner invariant under background field gauge transformations using a geometric description of the field connections.
Dirac and Majorana Feynman Rules with four-fermions
Michael Paraskevas
A compact method for amplitude calculations in theories with Dirac and Majorana effective operators is discussed. Using the renormalizable formalism of Denner et al., [1,2] for pro…
Feynman Rules for the Standard Model Effective Field Theory in -gauges
A. Dedes, W. Materkowska, M. Paraskevas +2
We assume that New Physics effects are parametrized within the Standard Model Effective Field Theory (SMEFT) written in a complete basis of gauge invariant operators up to dimensio…
Distinguishing between MSSM and NMSSM through processes
Jacky Kumar, Michael Paraskevas
We study deviations between MSSM and -invariant NMSSM, with respect to their predictions in processes. We find that potentially significant effects arise either from t…
Aspects of the Flavour Expansion Theorem
M. Paraskevas
The Flavour Expansion Theorem, which has been recently proposed as a more general and elegant algebraic method, for the derivation of the commonly used Mass Insertion Approximation…
Mass Insertions vs. Mass Eigenstates calculations in Flavour Physics
A. Dedes, M. Paraskevas, J. Rosiek +2
We present and prove a theorem of matrix analysis, the Flavour Expansion Theorem (or FET), according to which, an analytic function of a Hermitian matrix can be expanded polynomial…
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…
Hierarchical neutrino masses and mixing in non minimal-SU(5)
M. Paraskevas, K. Tamvakis
We consider the problem of neutrino masses and mixing within the framework of a non-minimal supersymmetric SU(5) model extended by adding a set of 1,24 chiral superfields accommoda…