Excited <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Ω</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math> Baryons as <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>2</mml:mn><mml:mi>S</mml:mi></mml:mrow></mml:math> states

Excited states of heavy baryons in the Skyrme model.

We obtain the spectra of excited heavy baryons containing one heavy quark by quantizing the exactly-solved heavy meson bound states to Skyrme soliton. The results are comparable to the recent experimental observations and quark model predictions, and are consistent with the heavy quark spin symmetry. However, somewhat large dependence of the results on the heavy quark mass strongly calls for th...

Chiral symmetry in excited baryons

Chiral symmetry is expected to be approximately restored in excited baryons, which is a consequence of quite general symmetry based arguments. However, such a restoration cannot be described in the framework of naive constituent quark models. Then chiral potential quark model (Generalised Nambu-Jona-Lasinio model) is used to draw a microscopic picture of such a restoration: the axial charge ope...

Pentaquarks and Radially Excited Baryons∗

Although chiral soliton model predictions for the mass of the lightest exotic pentaquark, the Θ with zero isospin and unit strangeness, have been around for some time1, the study of pentaquarks as baryon resonances became popular only recently when experiments2,3 indicated their existence. These experiments were stimulated by a chiral soliton model estimate4 suggesting that such exotic baryons ...

Excited baryons from the FLIC fermion action

Masses of positive and negative parity excited nucleons and hyperons are calculated in quenched lattice QCD using an O(a) improved gluon action and a fat-link clover fermion action in which only the irrelevant operators are constructed with fat links. The results are in agreement with earlier N∗ simulations with improved actions, and exhibit a clear mass splitting between the nucleon and its pa...

Baryons as Relativistic Bound States of Quark and Diquark