Regular Article - Theoretical Physics
Analysis of the and with QCD sum rules
Department of Physics, North China Electric Power University, Baoding, 071003, People’s Republic of China
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Accepted: 30 July 2015
Published online: 8 August 2015
In this article, we study the charmed baryon states and with the spin-parity by subtracting the contributions from the corresponding charmed baryon states with the spin-parity using the QCD sum rules, and suggest a formula with the effective mass to determine the energy scales of the QCD spectral densities, and make reasonable predictions for the masses and pole residues. The numerical results indicate that the and have at least two remarkable under-structures.
© The Author(s), 2015