Abstract
So far, the masses of excited states of mixed orbital symmetry and in particular those of nonstrange [ 70 , 1 − ] baryons derived in the 1 / N c expansion were based on the separation of a system of N c quarks into a symmetric core and an excited quark. Here we avoid this separation and show that an advantage of this new approach is to substantially reduce the number of linearly independent operators entering the mass formula. A novelty is that the isospin–isospin term becomes as dominant in Δ as the spin–spin term in N resonances.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.