Spectroscopy of heavy baryons with breaking of heavy-quark symmetry

Abstract

Transition decay widths by one-pion emissions for excited heavy-baryons with a single heavy (charm and bottom) quark are investigated by following the heavy-quark symmetry and its breaking effects at $\mathcal{O}(1/M)$ for a heavy-baryon mass $M$. Based on the heavy-baryon effective theory, interaction Lagrangian for the heavy baryons with axial-vector current induced by a pion is constructed. It is presented that the transition decay widths up to $\mathcal{O}(1/M)$ in several channels are constrained. The results will be useful in experimental study of excited heavy-baryons.

11 pages

References in corpus (6)

• Heavy quarkonium: progress, puzzles, and opportunities
• Color superconductivity in dense quark matter
• Strong Decays of Charmed Baryons in Heavy Hadron Chiral Perturbation Theory
• Strong decays of charmed baryons
• Charmed baryon strong decays in a chiral quark model
• $D$ and $D^{\ast }$ meson mixing in spin-isospin correlated cold nuclear matter

Cited by in corpus (5)

• Structure of charmed baryons studied by pionic decays
• Dynamically generated $J^P=1/2^{-}(3/2^{-})$ singly charmed and bottom heavy baryons
• Decay widths and mass spectra of single bottom baryons
• Strong decays of singly heavy baryons from a chiral effective theory of diquarks
• Chiral effective theory of scalar and vector diquarks revisited