6,272 research outputs found
Heavy baryon spectroscopy in QCD
We perform a systematic study of the masses of charmed and bottom baryons in
the framework of the QCD sum rule approach. Contributions of the operators up
to dimension six are included in operator product expansion. The resulting
heavy baryon masses from the calculations are well consistent with the
experimental values, and predictions to the spectroscopy of the unobserved
bottom baryons are also presented.Comment: 14 pages,38 figure
Doubly heavy baryons in QCD sum rules
The mass spectra of doubly heavy baryons are systematically calculated in the
framework of QCD sum rules. With a tentative heavy-diquark--light-quark
configuration, the interpolating currents representing the doubly heavy baryons
are proposed. Contributions of the operators up to dimension six are included
in operator product expansion. The numerical results are compatible with other
theoretical predictions, which may support the structure of doubly
heavy baryons.Comment: RevTeX 4, 11 pages with 14 eps figures, accepted for publication in
Phys. Rev.
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