Strong decays of singly heavy baryons from a chiral effective theory of diquarks

Abstract

A chiral effective theory of scalar and vector diquarks is formulated, which is based on $SU(3{)}_R\times SU(3{)}_L$ chiral symmetry and includes interactions between scalar and vector diquarks with one or two mesons. We find that the diquark interaction term with two mesons breaks the $U(1{)}_A$ and flavor $SU(3)$ symmetries. To determine the coupling constants of the interaction Lagrangians, we investigate one-pion emission decays of singly heavy baryons $Qqq$ ($Q=c,b$ and $q=u,d,s$), where baryons are regarded as diquark--heavy-quark two-body systems. Using this model, we present predictions of the unobserved decay widths of singly heavy baryons. We also study the change of masses and strong decay widths of singly heavy baryons under partial restoration of chiral symmetry.

15 pages, 5 figures

References in corpus (38)

• Spectroscopy and Regge trajectories of heavy baryons in the relativistic quark-diquark picture
• Masses of excited heavy baryons in the relativistic quark-diquark picture
• Strong Decays of Charmed Baryons in Heavy Hadron Chiral Perturbation Theory
• Assignments of ${\Lambda }_Q$ and ${\Xi }_Q$ baryons in the heavy quark-light diquark picture
• Strong and radiative decays of the low-lying $S$- and $P$-wave singly heavy baryons
• Charmed baryon strong decays in a chiral quark model
• Evidence for diquarks in lattice QCD
• Mixing of scalar tetraquark and quarkonia states in a chiral approach
• Low-lying charmed and charmed-strange baryon states
• Structure of charmed baryons studied by pionic decays
• Λ_{c} enhancement from strongly coupled quark-gluon plasma
• Two chiral nonet model with massless quarks
• Diquark correlations in baryons on the lattice with overlap quarks
• Doubly heavy tetraquarks in a chiral-diquark picture
• Identifying the ${\Xi }_b(6227)$ and ${\Sigma }_b(6097)$ as $P$-wave bottom baryons of $J^P=3/2^{-}$
• Single heavy baryons with chiral partner structure in a three-flavor chiral model
• Strong decays of the higher excited ${\Lambda }_Q$ and ${\Sigma }_Q$ baryons
• $P$-wave charmed baryons of the $SU(3)$ flavor $6_F$
• Relativistic corrections to decays of heavy baryons in the quark model
• Strong decay widths and mass spectra of charmed baryons
• Diquark effects in light baryon correlators from lattice QCD
• Diquark properties from full QCD lattice simulations
• Spectrum of singly heavy baryons from a chiral effective theory of diquarks
• Heavy baryon spectrum with chiral multiplets of scalar and vector diquarks
• Identifying the ${\Xi }_c^0$ baryons observed by LHCb as $P$-wave ${\Xi }_c^{\prime }$ baryons
• Spectra and decay properties of ${\Lambda }_b$ and ${\Sigma }_b$ baryons
• Excited ${\Omega }_b$ baryons and fine structure of strong interaction
• Identifying the ${\Xi }_b(6100)$ as the $P$-wave bottom baryon of $J^P=3/2^{-}$
• Novel pentaquark picture for singly heavy baryons from chiral symmetry
• Excitation energy spectra of the Lambda_c and Lambda_b baryons in a finite-size diquark model
• Three-body decay of ${\Lambda }_c^{\ast }(2765)$ and determination of its spin-parity
• Quark-diquark potential and diquark mass from Lattice QCD
• Determination of the possible quantum numbers for the newly observed ${\Xi }_b(6227{)}^0$ state
• Suppression of decay widths in singly heavy baryons induced by the $U_A(1)$ anomaly
• Decays of Roper-like singly heavy baryons in a chiral model
• ${\Lambda }_c{\Sigma }_c\pi$ coupling and ${\Sigma }_c\to {\Lambda }_c\pi$ decay in lattice QCD
• Axial-vector transition form factors of the singly heavy baryons
• Building diquark model from Lattice QCD

Cited by in corpus (6)

• Masses and Magnetic Moments of Doubly Heavy Tetraquarks via Diffusion Monte Carlo Method
• Decay widths and mass spectra of single bottom baryons
• Axial anomaly effect to the chiral-partner structure of diquarks at high temperature
• Axial anomaly effect on three-quark and five-quark singly heavy baryons
• Fate of ${\Sigma }_c$, ${\Xi }_c^{\prime }$ and ${\Omega }_c$ baryons at high temperature with chiral restoration
• Chiral effective theory of scalar and vector diquarks revisited