Quark-diquark structure and masses of doubly charmed baryons

Abstract

The finite size of doubly heavy diquark gives a positive correction to the masses of baryons calculated in the local diquark approximation. We evaluate this correction for the basic states of doubly charmed baryons to give quite accurate predictions actual for current searches of those baryons at LHCb: $m[{{\Xi }_{cc}^{1/2}}^{+}]\approx m[{{\Xi }_{cc}^{1/2}}^{++}]=3615\pm 55$ MeV and $m[{{\Xi }_{cc}^{3/2}}^{+}]\approx m[{{\Xi }_{cc}^{3/2}}^{++}]=3747\pm 55$ MeV.

5 pages, 2 figures, several references added to the new version

References in corpus (5)

• Observation of the doubly charmed baryon ${\Xi }_{cc}^{++}$
• $QQ\bar{Q}\bar{Q}$ states: masses, production, and decays
• Static properties and semileptonic decays of doubly heavy baryons in a nonrelativistic quark model
• Very narrow excited ${\Omega }_c$ baryons
• Production of the Doubly Heavy Baryons, $B_c$ Meson and the All-charm Tetraquark at AFTER@LHC with Double Intrinsic Heavy Mechanism

Cited by in corpus (20)

• Estimates of W-exchange contributions to ${\Xi }_{cc}$ decays
• Analysis of the semileptonic and nonleptonic two-body decays of the double heavy charm baryon states ${\Xi }_{cc}^{++},{\Xi }_{cc}^{+}$ and ${\Omega }_{cc}^{+}$
• Magnetic moments of doubly heavy baryons in light-cone QCD
• Towards a Heavy Diquark Effective Theory for Weak Decays of Doubly Heavy Baryons
• Magnetic moments of the spin-1/2 singly charmed baryons in covariant baryon chiral perturbation theory
• The Status of ${\Xi }_{cc}^{++}$ Baryon: investigating quark-diquark model
• The $ss\bar{s}\bar{s}$ tetraquark states and the newly observed structure $X(2239)$ by BESIII Collaboration
• Effective QCD string and doubly heavy baryons
• Systematic analysis of doubly charmed baryons ${\Xi }_{cc}$ and ${\Omega }_{cc}$
• Magnetic dipole moments of the spin-$\frac{3}{2}$ doubly heavy baryons
• NLO Effects for Doubly Heavy Baryon in QCD Sum Rules
• Spin-$\frac{3}{2}$ doubly charmed baryon contribution to the magnetic moments of the spin-$\frac{1}{2}$ doubly charmed baryons
• Magnetic moments of the spin-$\frac{3}{2}$ doubly charmed baryons in covariant baryon chiral perturbation theory
• Production of double charmed baryons with the excited heavy diquark at LHC
• Revisiting lifetimes of doubly charmed baryons
• The Direct Coupling of Light Quarks to Heavy Di-quarks
• Strong decays of the low-lying doubly bottom baryons
• Fate of the doubly heavy spin$-3/2$ baryons in a dense medium
• Chiral Lagrangians for spin-$\frac{1}{2}$ and spin-$\frac{3}{2}$ doubly charmed baryons
• The production of excited states of doubly heavy baryons at the Large Hadron Collider