2018/11/30 by Marios Costa, Costa, Marios, H. Panagopoulos +1
Physics and Astronomy · #Black Holes and Theoretical Physics #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.1812.00066
openalex publication_date 2018/11/30 · openalex created_date 2022/08/01 · openalex updated_date 2026/07/28
We study 4-dimensional SQCD with gauge group SU(Nc) and Nf flavors of chiral\nsupermultiplets on the lattice. We perform extensive calculations of matrix\nelements and renormalization factors of composite operators in Perturbation\nTheory. In particular, we compute the renormalization factors of quark and\nsquark bilinears, as well as their mixing at the quantum level with gluino and\ngluon bilinear operators. From these results we construct correctly\nrenormalized composite operators, which are free of mixing effects and may be\nemployed in non-perturbative studies of Supersymmetry. All our calculations\nhave been performed with massive matter fields, in order to regulate the\ninfrared singularities which are inherent in renormalizing squark bilinears.\nFurthermore, the quark and squark propagators are computed in momentum space\nwith nonzero masses.\n This work is a feasibility study for lattice computations relevant to a\nnumber of observables, such as spectra and distribution functions of hadrons,\nbut in the context of supersymmetric QCD, as a forerunner to lattice\ninvestigations of SUSY extensions of the Standard Model.\n