QCD sum rule analysis of excited $Λ_c$ mass parameter

Details QCD sum rule analysis of excited $Λ_c$ mass parameter QCD sum rule analysis of excited $Λ_c$ mass parameter

2000-02-03

arxiv.org/abs/hep-ph/0002034v1

Phys.Lett. B476 (2000) 303-308

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 3 figures, to appear in PLB

Scientific paper

10.1016/S0370-2693(00)00144-1

The mass parameter of orbitally excited $\Lambda_c$ baryons is calculated by using QCD sum rule in the framework of heavy quark effective theory. Two kinds of interpolating current for the excited heavy baryons are introduced. It is obtained that $\bar{\Lambda}=1.08^{+0.095}_{-0.104}$ GeV for the non-derivative current and $\bar{\Lambda}=1.06^{+0.090}_{-0.107}$ GeV for the current with derivative. These results are consistent with experimental data.

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