منابع مشابه
Heavy Hadron Chiral Perturbation Theory
The formalism and applications of chiral perturbation theory for hadrons containing a single heavy quark are discussed. We emphasize the utility of working directly with the velocity dependent “super” fields which appear in the chiral Lagrangian and whose interactions manifestly preserve heavy quark spin symmetry rather than their individual spin components. Chiral logarithm corrections to meso...
متن کاملElectromagnetic Interactions in Heavy Hadron Chiral Theory
Electromagnetic interactions are incorporated into Heavy Hadron Chiral Perturbation Theory. Short and long distance magnetic moment contributions to the chiral Lagrangian are identified, and M1 radiative decays of heavy vector mesons and sextet baryons are studied. Using recent CLEO D branching fraction ratio data, we fit the meson coupling to the axial vector Goldstone current and find g 1 = 0...
متن کاملHeavy Baryon Mixing in Chiral Perturbation Theory
We discuss the SU(3) and heavy quark spin-symmetry breaking mixing between the Ξc and Ξ ′ c charmed baryons. Chromomagnetic hyperfine interactions are the leading source of spin-symmetry breaking and together with the SU(3) breaking mass differences between the lightest pseudo-Goldstone bosons gives the leading contribution to the mixing. Such contributions are computed in chiral perturbation t...
متن کاملStrong 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 ...
متن کاملBaryon Electromagnetic Properties in Partially Quenched Heavy Hadron Chiral Perturbation Theory
Abstract The electromagnetic properties of baryons containing a heavy quark are calculated at next-toleading order in partially quenched heavy hadron chiral perturbation theory. Calculations are performed for three light flavors in the isospin limit and additionally for two light non-degenerate flavors. We use partially-quenched charge matrices that are easy to implement on the lattice. The res...
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 1993
ISSN: 0550-3213
DOI: 10.1016/0550-3213(93)90263-o