Baryons with two heavy quarks: Masses, production, decays, and detection

By M. Karliner, J. Rosner. 2014

222 citations recorded by the source corpus.

The large number of B c mesons observed by LHCb suggests a sizable cross section for producing doubly heavy baryons in the same experiment. Motivated by this, we estimate masses of the doubly heavy J = 1 / 2 baryons Ξ c c , Ξ b b , and Ξ b c , and their J = 3 / 2 hyperfine partners, using a method which accurately predicts the masses of ground-state baryons with a single heavy quark. We obtain M ( Ξ c c ) = 3627 ± 12 MeV , M ( Ξ c c * ) = 3690 ± 12 MeV , M ( Ξ b b ) = 10162 ± 12 MeV , M ( Ξ b b * ) = 10184 ± 12 MeV , M ( Ξ b c ) = 6914 ± 13 MeV , M ( Ξ ′ b c ) = 6933 ± 12 MeV , and M ( Ξ b c * ) = 6969 ± 14 MeV . As a byproduct, we estimate the hyperfine splitting between B c * and B c mesons to be 68 ± 8 MeV . We discuss P-wave excitations, production mechanisms, decay modes, lifetimes, and prospects for detection of the doubly heavy baryons.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/58fc95ca2d27b88589d19e35fe8c3eb9591dad00

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In Nuclear and High Energy Physics

Citations in the corpus

Multiquark States (2017, methodology): “[182] and [183] for an extensive list of other predictions, most of which quote much greater uncertainties.”
Opportunities in Flavour Physics at the HL-LHC and HE-LHC (2018, background): “Their production and decays are discussed, for example, in [679, 693].”
Exotic Hadrons: Review and Perspectives (2016, background): “Double-charm baryons will certainly receive more attention in the near future [85].”