Pseudoscalar Goldstone bosons scattering off charmed baryons with chiral perturbation theory

Low-energy interactions of Nambu-Goldstone bosons with D mesons in covariant chiral perturbation theory

Charmed Baryon Masses in Chiral Perturbation Theory ∗

The masses of the charmed baryons in the 6 representation of SU(3) obey an equal spacing rule at lowest order in SU(3) breaking, O(ms). We compute the corrections to this relation at order O(m s ) arising from meson loops using chiral perturbation theory combined with heavy quark symmetry and find them to be small. We also examine the hyperfine interaction responsible for the splitting between ...

Strong Decays of Charmed Baryons in Heavy Hadron Chiral Perturbation Theory

Strong decays of charmed baryons are analyzed in the framework of heavy hadron chiral perturbation theory (HHChPT) in which heavy quark symmetry and chiral symmetry are synthesized. HHChPT works excellently for describing the strong decays of s-wave charmed baryons. For L = 1 orbitally excited states, two of the unknown couplings, namely, h2 and h10, are determined from the resonant Λc ππ mode ...

Baryons in Partially-Quenched Chiral Perturbation Theory

The motivation for including baryons into partially-quenched QCD (PQQCD), or more specifically partially-quenched chiral perturbation theory (PQχPT), is clear. One wishes to take partially-quenched (PQ) lattice simulations of observables of interest that in the foreseeable future will be performed with quark masses that are heavier than those of nature, and make rigorous predictions for these o...

Quenched chiral perturbation theory for baryons.

We develop chiral perturbation theory for baryons in quenched QCD. Quenching (the elimination of diagrams containing virtual quark loops) is achieved by extending the Lagrangian method of Bernard and Golterman, and is implemented in a theory where baryons are treated as fixed velocity sources. Our method requires that the octet baryons be represented by a three index tensor rather than by the u...