Search results for "Unitary spin independence"
showing 2 items of 2 documents
Compositeness of the strange, charm and beauty odd parity $\Lambda$ states
2015
14 pages.- 2 figures.- 5 tables
Hidden charm N and Delta resonances with heavy-quark symmetry
2013
A model is developed to describe odd-parity baryon resonances generated dynamically through a unitary baryon-meson coupled-channels approach. The scheme applies to channels with light- and/or heavy-quark content. Distinct features of the model are that i) the interaction is an S-wave contact one, ii) it reduces to the SU(3) Weinberg-Tomozawa Hamiltonian when light pseudoscalar mesons are involved, thus respecting chiral symmetry, iii) spin-flavor is preserved in the light-quark sector, and iv) heavy-quark spin symmetry is fulfilled in the heavy-quark sector. In particular, baryon-meson states with different content in c or in (c) over bar do not mix. The model is a minimal one and it contai…