122 citations · 294 across the 11 of their papers we have counts for
7 papers · 1 filter
Renormalization constants for one-derivative fermion operators in twisted mass QCD
C. Alexandrou, M. Constantinou, T. Korzec +2
We present perturbative and non-perturbative results on the renormalization constants of the local and one-derivative vector and axial vector operators. Non-perturbative results ar…
Perturbative renormalization factors and O(a^2) corrections for lattice 4-fermion operators with improved fermion/gluon actions
Martha Constantinou, Petros Dimopoulos, Roberto Frezzotti +4
In this work we calculate the corrections to the amputated Green's functions of 4-fermion operators, in 1-loop Lattice Perturbation theory. One of the novel aspects of our calculat…
BK-parameter from Nf = 2 twisted mass lattice QCD
ETM Collaboration, M. Constantinou, P. Dimopoulos +12
We present an unquenched lattice computation of the parameter which controls oscillations. A partially quenched setup is employed with two maximally…
Renormalization constants for 2-twist operators in twisted mass QCD
C. Alexandrou, M. Constantinou, T. Korzec +2
Perturbative and non-perturbative results on the renormalization constants of the fermion field and the twist-2 fermion bilinears are presented with emphasis on the non-perturbativ…
Non-perturbative renormalization of quark bilinear operators with Nf=2 (tmQCD) Wilson fermions and the tree-level improved gauge action
M. Constantinou, P. Dimopoulos, R. Frezzotti +8
We present results for the renormalization constants of bilinear quark operators obtained by using the tree-level Symanzik improved gauge action and the Nf=2 twisted mass fermion a…
Perturbative renormalization of GPDs to O(a^2), for various fermion/gluon actions
Martha Constantinou, Haralambos Panagopoulos, Fotos Stylianou
We present a 1-loop perturbative calculation of the fermion propagator, up to O(a^2) (a: lattice spacing). The fermions are described by Wilson, clover and twisted-mass actions; fo…
O(a^2) corrections to 1-loop matrix elements of 4-fermion operators with improved fermion/gluon actions
Martha Constantinou, Vittorio Lubicz, Haralambos Panagopoulos +2
We calculate the corrections to the amputated Green's functions of 4-fermion operators, in 1-loop Lattice Perturbation theory. The novel aspect of our calculations is that they are…