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Magnetic moments of the spin-1/2 singly charmed baryons in covariant baryon chiral perturbation theory
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abstract
Recent experimental advances have reignited theoretical interests in heavy-flavor hadrons. In this work, we study the magnetic moments of the spin-1/2 singly charmed baryons up to the next-to-leading order in covariant baryon chiral perturbation theory with the extended-on-mass-shell renormalization scheme. The pertinent low energy constants $g_{1-4}$ are fixed with the help of the quark model and the heavy quark spin flavor symmetry, while the remaining $d_2$, $d_3$, $d_5$ and $d_6$ are determined by fitting to the lattice QCD pion-mass dependent data. We study the magnetic moments as a function of $m_\pi^2$ and compare our results with those obtained in the heavy baryon chiral perturbation theory. We find that the loop corrections induced by the anti-triplet states are dominated by the baryon pole diagram. In addition, we predict the magnetic moments of the spin-1/2 singly charmed baryons and compare them with those of other approaches.
Forward citations
Cited by 5 Pith papers
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Electromagnetic polarizabilities of the spin-$\frac{1}{2}$ singly heavy baryons in heavy baryon chiral perturbation theory
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Magnetic dipole moments of the singly-heavy baryons with spin-$\frac{1}{2}$ and spin-$\frac{3}{2}$
QCD light-cone sum rules are used to predict magnetic dipole moments of all singly-heavy baryons with spin 1/2 and spin 3/2, plus electric quadrupole and magnetic octupole moments for the higher-spin states.
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$|\Delta I|=3/2$ non-leptonic hyperon decays in covariant baryon chiral perturbation theory
In covariant baryon chiral perturbation theory, decuplet-baryon contributions with the consistent coupling scheme, plus pion loops, most improve the fit to the |ΔI|=3/2 hyperon decay amplitudes.
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Electromagnetic form factors of singly charmed baryons $\Sigma_c$ and $\Lambda_c$ in a covariant quark-diquark model
Spacelike electromagnetic form factors of Σc and Λc are computed in a covariant quark-diquark model, finding compact charge distributions and a charm-quark-dominated magnetic form factor for Λc.
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Relativistic chiral nuclear forces: status and prospects
A review of the relativistic chiral nuclear force, presenting the Beihang group's own NNLO results for nucleon-nucleon scattering and promising faster convergence than the standard Weinberg approach.
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