16 citations · 34 across the 18 of their papers we have counts for
20 papers
One-loop mixing matrix of the N=1 SYM Supercurrent operator upon renormalization on the Lattice using stout-smeared Links
Marios Costa, Elias Antoniou, Constantinos Costa +2
We extend the perturbative investigation of the renormalization and mixing patterns of the supercurrent operator in lattice supersymmetric Yang-Mills (SYM) theory, usi…
Perturbative Renormalization of Noether Currents in SYM with Improved Discretizations
Marios Costa, Elias Antoniou, Salomi Dimou +4
We investigate the perturbative renormalization of Noether currents associated with chiral symmetry and supersymmetry transformations in supersymmetric Yang-Mills t…
Lattice artifacts proportional to the quark mass in the QCD running coupling
Marios Costa, Demetrianos Gavriel, Haralambos Panagopoulos +1
Discretization artifacts proportional to the quark mass can limit the precision of strong-coupling determinations in lattice QCD, especially in the presence of heavy quarks. In thi…
Fine-tunings and renormalization of gluino bilinear operators in lattice SYM with Stout-Smeared links
Marios Costa, Panayiotis Kypros Chrysanthis, Constantinos Costa +3
In this paper, we compute the renormalization factors for the gluino and gluon fields, the gauge parameter, the coupling constant, as well as the scalar, pseudoscalar, and axial-ve…
Classification of four-quark operators with under flavor symmetry and their renormalization in a gauge-invariant scheme
Gregoris Spanoudes, Marios Costa, Kyproulla Mitsidi +1
In this paper we study a complete set of scalar and pseudoscalar four-quark operators, with a particular emphasis on their renormalization within a Gauge-Invariant Renormalization…
N=1 Supersymmetric QCD on the lattice using overlap fermions
Marios Costa, Eleni Ioannou, Haralambos Panagopoulos
Using N=1 Supersymmetric QCD (SQCD) as a prototype model, this work presents a formulation of overlap quarks and gluinos on the lattice, with particular emphasis on the constructio…
Perturbative determination of improvement on the QCD running coupling
Marios Costa, Demetrianos Gavriel, Haralambos Panagopoulos +1
We present the perturbative results of the discretization errors proportional to the quark mass () on the QCD running coupling within lattice perturbation theory.…
Supersymmetric QCD on the lattice: Fine-tuning and counterterms for the Yukawa and quartic couplings
M. Costa, H. Herodotou, H. Panagopoulos
In this study, we determine the fine-tuning of parameters in Supersymmetric QCD, discretized on a Euclidean lattice. Our focus is on the renormalization of Yukawa…
Supersymmetric QCD on the lattice: Fine-tuning and counterterms for the quartic couplings
Marios Costa, Herodotos Herodotou, Haralambos Panagopoulos
In this work we calculate the renormalization of counterterms which arise in the lattice action of Supersymmetric QCD (SQCD). In particular, the fine-tunings for quartic co…
Renormalization of the Yukawa and Quartic Couplings in Supersymmetric QCD
M. Costa, H. Herodotou, H. Panagopoulos
In this work we perform calculations in order to determine the renormalization factors and the mixing coefficients of the Yukawa and the quartic couplings in Supe…
Mass effects on the QCD -function
Marios Costa, Demetrianos Gavriel, Haralambos Panagopoulos +1
In this study we present lattice results on the QCD -function in the presence of quark masses. The -function is calculated to three loops in perturbation theory and for impro…
Supersymmetric QCD on the Lattice: Fine-Tuning of the Yukawa Couplings
Marios Costa, Herodotos Herodotou
We determine the fine-tuning of the Yukawa couplings of supersymmetric QCD, discretized on a lattice. We use perturbation theory at one-loop level. The Modified Minimal Subtraction…
Supercurrent renormalization of supersymmetric Yang-Mills theory on the lattice
Georg Bergner, Marios Costa, Haralambos Panagopoulos +3
Supersymmetry on the lattice is explicitly broken by the gluino mass and lattice artifacts. However, it can be restored in the continuum limit by fine tuning the parameters based o…
Noether supercurrent operator mixing from lattice perturbation theory
Georg Bergner, Marios Costa, Haralambos Panagopoulos +2
In this work we present perturbative results for the renormalization of the supercurrent operator, , in Supersymmetric Yang-Mills theory. At the quantum level, t…
Perturbative renormalization of the supercurrent operator in lattice supersymmetric Yang-Mills theory
Georg Bergner, Marios Costa, Haralambos Panagopoulos +2
In this work we perform a perturbative study of the Noether supercurrent operator in the context of Supersymmetric Yang-Mills (SYM) theory on the lattice. The superc…
Supercurrent Renormalization in Supersymmetric Yang-Mills Theory
Georg Bergner, Marios Costa, Haralambos Panagopoulos +4
In this work we study the renormalization of the SUSY Noether current in Supersymmetric = 1 Yang-Mills (SYM) theory on the lattice. In particular, we study the mixing…
Perturbative study of the Gluino-Glue operator in SYM
Marios Costa, George Panagopoulos, Haralambos Panagopoulos +3
We investigate the renormalization of the Gluino-Glue operator, using both Lattice Perturbation Theory (LPT) and a Gauge Invariant Renormalization Scheme (GIRS). The latter scheme…
Renormalization and Mixing of the Gluino-Glue Operator on the Lattice
Marios Costa, Herodotos Herodotou, Phivos Philippides +1
We study the mixing of the Gluino-Glue operator in =1 Supersymmetric Yang-Mills theory (SYM), both in dimensional regularization and on the lattice. We calculate its reno…
The chromomagnetic operator on the lattice
M. Constantinou, M. Costa, R. Frezzotti +5
We present our study of the renormalization of the chromomagnetic operator,O(CM), which appears in the effective Hamiltonian describing Delta S = 1 transitions in and beyond the St…
The chromomagnetic operator on the lattice
M. Constantinou, M. Costa, R. Frezzotti +5
We study matrix elements of the "chromomagnetic" operator on the lattice. This operator is contained in the strangeness-changing effective Hamiltonian which describes electroweak e…