Mass spectra and radiative transitions of doubly heavy baryons in a relativized quark model

Abstract

We study the mass spectra and radiative decays of doubly heavy baryons within the diquark picture in a relativized quark model. The mass of the $J^P=1/2^{+}$ ${\Xi }_{cc}$ ground state is predicted to be 3606 MeV, which is consistent with the mass of ${\Xi }_{cc}^{++}(3621)$ newly observed by the LHCb collaboration. The predicted mass gap between two $S$ wave states, ${\Xi }_{cc}^{\ast }$ ($J^P=3/2^{+}$) and ${\Xi }_{cc}$ ($J^P=1/2^{+}$), is 69 MeV. Furthermore, the radiative transitions of doubly heavy baryons are also estimated by using the realistic wave functions obtained from relativized quark model. The radiative decay widths of ${\Xi }_{cc}^{\ast ++}\to {\Xi }_{cc}^{++}\gamma$ and ${\Xi }_{cc}^{\ast +}\to {\Xi }_{cc}^{+}\gamma$ are predicted to be about 7 and 4 keV, respectively. These predictions of doubly heavy baryons can provide helpful information for future experimental searches.

8 pages, 2 figure. The size effects of the diquarks are considered. Version accepted by Phys. Rev. D

References in corpus (33)

• Observation of the doubly charmed baryon ${\Xi }_{cc}^{++}$
• Heavy Baryons in a Quark Model
• Discovery of doubly-charmed Xi_{cc} baryon implies a stable (b b ubar dbar) tetraquark
• Heavy-quark symmetry implies stable heavy tetraquark mesons $Q_i{Q}_j{\bar{q}}_k{\bar{q}}_l$
• Charmed bottom baryon spectroscopy from lattice QCD
• Baryons with two heavy quarks: Masses, production, decays, and detection
• Masses of tetraquarks with two heavy quarks in the relativistic quark model
• Towards an understanding of heavy baryon spectroscopy
• Weak Decays of Doubly Heavy Baryons: SU(3) Analysis
• Weak Decays of Doubly Heavy Baryons: the $1/2\to 1/2$ case
• Ground-state triply and doubly heavy baryons in a relativistic three-quark model
• Excited heavy tetraquarks with hidden charm
• Charmonium spectrum and their electromagnetic transitions with higher multipole contributions
• Charmed-strange mesons revisited: mass spectra and strong decays
• Spectroscopy of doubly-charmed baryons from lattice QCD
• Strong and radiative decays of the doubly charmed baryons
• Excited state mass spectra of doubly heavy $\Xi$ baryons
• Radiative decays of the doubly charmed baryons in chiral perturbation theory
• The Born-Oppenheimer approximation in an effective field theory language
• Doubly heavy baryons in a Salpeter model with AdS/QCD inspired potential
• Radiative M1 transitions of heavy baryons in the bag model
• Radiative decays of double heavy baryons in a relativistic constituent three-quark model including hyperfine mixing
• The $X(4140)$, $X(4274)$, $X(4500)$ and $X(4700)$ in the relativized quark model
• Magnetic moments of the doubly charmed and bottomed baryons
• Decay chain information on the newly discovered double charm baryon state ${\Xi }_{cc}^{++}$
• Prediction of exotic doubly charmed baryons within chiral effective field theory
• Establishing low-lying doubly charmed baryons
• Isospin splittings in baryons with two heavy quarks
• Understanding the charmed states recently observed by the LHCb and BaBar Collaborations in the quark model
• Doubly-Heavy Baryon Weak Decays: ${\Xi }_{bc}^0\to p{K}^{-}$ and ${\Xi }_{cc}^{+}\to {\Sigma }_c^{++}(2520)K^{-}$
• Masses of tetraquarks with open charm and bottom
• Doubly heavy hadrons and the domain of validity of doubly heavy diquark--anti-quark symmetry
• Quark-level analogue of nuclear fusion with doubly-heavy baryons

Cited by in corpus (7)

• Strong and radiative decays of the low-lying $S$- and $P$-wave singly heavy baryons
• The excited bottom-charmed mesons in a nonrelativistic quark model
• Estimates of W-exchange contributions to ${\Xi }_{cc}$ decays
• Precision measurement of the ${\Xi }_{cc}^{++}$ mass
• Analysis of the semileptonic and nonleptonic two-body decays of the double heavy charm baryon states ${\Xi }_{cc}^{++},{\Xi }_{cc}^{+}$ and ${\Omega }_{cc}^{+}$
• Sum rules for $CP$ asymmetries of charmed baryon decays in the $SU(3{)}_F$ limit
• Fate of the doubly heavy spin$-3/2$ baryons in a dense medium