Electromagnetic radiation of baryons containing two heavy quarks

Abstract

The two heavy quarks in a baryon which contains two heavy quarks and a light one, can constitute a scalar or axial vector diquark. We study electromagnetic radiations of such baryons, (i) Ξ_{(bc)_1} -> Ξ_{(bc)_0}+γ, (ii) Ξ_{(bc)_1}^* -> Ξ_{(bc)_0}+γ, (iii) Ξ_{(bc)_0}^{**}(1/2, l=1) -> Ξ_{(bc)_0}+γ, (iv) Ξ_{(bc)_0}^{**}(3/2, l=1) -> Ξ_{(bc)_0}+γand (v) Ξ_{(bc)_0}^{**}(3/2, l=2) -> Ξ_{(bc)_0}+γ, where Ξ_{(bc)_{0(1)}}, Ξ^*_{(bc)_1} are S-wave bound states of a heavy scalar or axial vector diquark and a light quark, and Ξ_{(bc)_0}^{**}(l is bigger than 1) are P- or D-wave bound states of a heavy scalar diquark and a light quark. Analysis indicates that these processes can be attributed into two categories and the physical mechanisms which are responsible for them are completely distinct. Measurements can provide a good judgment for the diquark structure and better understanding of the physical picture.

15 pages, Latex

References in corpus (4)

• Strong and Radiative Decays of Heavy Flavored Baryons
• Spectra of Baryons Containing Two Heavy Quarks in Potential Model
• Weak Semileptonic Decays of Heavy Baryons Containing Two Heavy Quarks
• Possible Explanation Why τ_{B^{\pm}}\simτ_{B^0} But τ_{D^{\pm}}\sim τ_{D^0}

Cited by in corpus (10)

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• Radiative decays of double heavy baryons in a relativistic constituent three-quark model including hyperfine mixing
• Bethe-Salpeter equation for doubly heavy baryons in the covariant instantaneous approximation
• Hyperfine mixing in electromagnetic decay of doubly heavy $bc$ baryons
• Charm Physics - A Field Full with Challenges and Opportunities
• Production of double charmed baryons with the excited heavy diquark at LHC
• Strong decays of the low-lying doubly bottom baryons
• Study on the Form Factors at Effective Vertices of Diqarks Interacting with Gauge Bosons
• The production of excited states of doubly heavy baryons at the Large Hadron Collider