Establishing low-lying doubly charmed baryons

Abstract

We systematically study the $S$-wave doubly charmed baryons using the method of QCD sum rules. Our results suggest that the ${\Xi }_{cc}^{++}$ recently observed by LHCb can be well identified as the $S$-wave ${\Xi }_{cc}$ state of $J^P=1/2^{+}$. We study its relevant ${\Omega }_{cc}$ state, whose mass is predicted to be around 3.7 GeV. We also systematically study the $P$-wave doubly charmed baryons, whose masses are predicted to be around 4.1 GeV. Especially, there can be several excited doubly charmed baryons in this energy region, and we suggest to search for them in order to study the fine structure of the strong interaction.

6 pages, 2 figures, 1 table; A mistake was found when evaluating decay constants of the S-wave charmed baryons. The conclusion is not changed

References in corpus (14)

• Baryons with two heavy quarks: Masses, production, decays, and detection
• Towards an understanding of heavy baryon spectroscopy
• Static properties and semileptonic decays of doubly heavy baryons in a nonrelativistic quark model
• Bottom Baryons
• P-wave charmed baryons from QCD sum rules
• Excited state mass spectra of doubly heavy $\Xi$ baryons
• Analysis of the ${\frac{3}{2}}^{+}$ heavy and doubly heavy baryon states with QCD sum rules
• D-wave charmed and bottomed baryons from QCD sum rules
• Radiative decays of double heavy baryons in a relativistic constituent three-quark model including hyperfine mixing
• Lifetime of doubly charmed baryons
• Chiral Properties of Baryon Fields with Flavor SU(3) Symmetry
• The masses and axial currents of the doubly charmed baryons
• GENXICC: A Generator for Hadronic Production of the Double Heavy Baryons ${\Xi }_{cc}$, ${\Xi }_{bc}$ and ${\Xi }_{bb}$
• GENXICC2.1: An Improved Version of GENXICC for Hadronic Production of Doubly Heavy Baryons

Cited by in corpus (11)

• Weak Decays of Doubly Heavy Baryons: SU(3) Analysis
• Weak Decays of Doubly Heavy Baryons: the $1/2\to 1/2$ case
• Weak Decays of Doubly Heavy Baryons: Multi-body Decay Channels
• Mass spectra and radiative transitions of doubly heavy baryons in a relativized quark model
• Strong and radiative decays of the doubly charmed baryons
• 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
• Prediction of triple-charm molecular pentaquarks
• Estimates of W-exchange contributions to ${\Xi }_{cc}$ decays
• $D$-wave heavy baryons of the $SU(3)$ flavor $6_F$