Eur. Phys. J. A (2017) 53: 115
https://doi.org/10.1140/epja/i2017-12306-6

Regular Article - Theoretical Physics

Self-energies of octet and decuplet baryons due to the coupling to the baryon-meson continuum

¹ INFN, Sezione di Genova, via Dodecaneso 33, 16146, Genova, Italy
² Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, A.P. 70-543, 04510, México D.F., Mexico
³ Institute of Theoretical Physics, Chinese Academy of Sciences, 100190, Beijing, China
⁴ Dipartimento di Fisica and INFN, Università di Roma Sapienza, Piazzale A. Moro 5, 00185, Roma, Italy

^* e-mail: santopinto@ge.infn.it

Received: 19 January 2017
Accepted: 28 April 2017
Published online: 2 June 2017

Abstract

We present an unquenched quark model calculation of the mass shifts of ground-state octet and decuplet baryons due to the coupling to the meson-baryon continuum. All ground-state baryons and pseudoscalar mesons are included in our calculation as intermediate states. The pair creation effects are taken explicitly into account through a microscopic, QCD-inspired, quark-antiquark pair creation mechanism.