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arXiv · 0804.4044

Isospin mass splittings of heavy baryons in HQS

Chien-Wen Hwang·Ching-Ho Chung
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Abstract

In this paper, the electromagnetic mass differences of heavy hadrons are discussed, while ignoring the relevant hyperfine interactions. The effects of one-photon exchange interaction and up-down quark mass difference are parameterized. Two mass difference equations 2Σ_c^+ - (Σ_c^{++} + Σ_c^0) = 2Σ_b^0 - (Σ_b^+ + Σ_b^-) and (Ξ_{cc}^+ - Ξ_{cc}^{++}) + (Ξ_{bb}^- - Ξ_{bb}^{0}) =2(Ξ_{bc}^0 - Ξ_{bc}^{+}) for the heavy baryons are obtained. In addition, the masses of Σ_b^0, Ξ_b^0, and Ξ_{cc}^{++} are predicted based on the known experimental data.

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Chien-Wen Hwang, Ching-Ho Chung. 2008-10-08. Isospin mass splittings of heavy baryons in HQS. https://doi.org/10.1103/physrevd.78.073013

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