Masses of doubly heavy-quark baryons in an extended chromomagnetic model

Abstract

We extend the chromomagnetic model by further considering the effect of color interaction. The effective mass parameters between quark pairs ($m_{qq}$ or $m_{q\bar{q}}$) are introduced to account both the effective quark masses and the color interaction between the two quarks. Using the experimental masses of hadrons, the quark pair parameters are determined between the light quark pairs and the light-heavy quark pairs. Then the parameters of heavy quark pairs ($cc$, $cb$, $bb$) are estimated based on simple quark model assumption. We calculate all masses of doubly and triply heavy-quark baryons. The newly discovered doubly charmed baryon ${\Xi }_{cc}$ fits into the model with an error of 12 MeV.

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• Fully heavy pentaquarks
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• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
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• Systematics of fully heavy dibaryons
• Inclusive weak-annihilation decays and lifetimes of beauty-charmed baryons
• Chiral corrections to the masses of the doubly heavy baryons
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• Possible molecules of triple-heavy pentaquarks within the extended local hidden gauge formalism
• Analysis of the bottom-charm baryon states with QCD sum rules
• Study of the mass spectra of doubly heavy ${\Xi }_{Q{Q}^{\prime }}$ and ${\Omega }_{Q{Q}^{\prime }}$ baryons
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• Mass spectrum, magnetic moments and Regge trajectories of ${\Omega }_{ccb}$ and ${\Omega }_{cbb}$ baryons in the nonrelativistic quark--diquark model
• Chiral Lagrangians for spin-$\frac{1}{2}$ and spin-$\frac{3}{2}$ doubly charmed baryons
• Properties of H particle-admixed compact star