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Please use this identifier to cite or link to this item: http://hdl.handle.net/2307/399

Title: O(a^2) corrections to 1-loop matrix elements of 4-fermion operators with improved fermion/gluon actions
Authors: Constantinou, Martha
Lubicz, Vittorio
Panagopoulos, Haralambos
Skouroupathis, Apostolos
Stylianou, Fotos
Keywords: Lattice QCD
Issue Date: 2009
Publisher: PoS - Proceedings of Science
Pages: 260
Abstract: 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 carried out to second order in the lattice spacing, O(a^2). We employ the Wilson/clover action for massless fermions (also applicable for the twisted mass action in the chiral limit) and the Symanzik improved action for gluons. Our calculations have been carried out in a general covariant gauge. Results have been obta
URI: http://hdl.handle.net/2307/399
URL: http://pos.sissa.it/archive/conferences/091/260/LAT2009_260.pdf
Appears in Collections:X_Dipartimento di Fisica 'Edoardo Amaldi'
ATC - Atti di Convegno

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