Chiral Structure of Baryon and Scalar Tetraquark Currents

¹ School of Physics and Nuclear Energy Engineering and International Research Center for Nuclei and Particles in the Comos, Beihang University, Beijing 100191, China
² Institute of Physics, Belgrade University, Pregrevica 118, Zemun, P.O.Box 57, 11080 Beograd, Serbia
³ Research Center for Nuclear Physics, Osaka University, Ibaraki 567–0047, Japan

^a e-mail: hxchen@buaa.edu.cn

Published online: 20 March 2014

Abstract

We investigate chiral properties of local fields of baryons consisting of three quarks with flavor SU(3) symmetry. We construct explicitly independent local threequark fields belonging to definite Lorentz and flavor representations. We discuss some implications of the allowed chiral symmetry representations on physical quantities such as axial coupling constants and chiral invariant Lagrangians. We also systematically investigate chiral properties of local scalar tetraquark currents, and study their chiral transformation properties.