Isospin mass splittings of heavy baryons in HQS

Details Isospin mass splittings of heavy baryons in HQS Isospin mass splittings of heavy baryons in HQS

2008-04-25

arxiv.org/abs/0804.4044v3

Phys.Rev.D78:073013,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 1 table. one section added. version accepted by Phys.Rev.D

Scientific paper

10.1103/PhysRevD.78.073013

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 2\Sigma_c^+ - (\Sigma_c^{++} + \Sigma_c^0) = 2\Sigma_b^0 - (\Sigma_b^+ + \Sigma_b^-) and (\Xi_{cc}^+ - \Xi_{cc}^{++}) + (\Xi_{bb}^- - \Xi_{bb}^{0}) =2(\Xi_{bc}^0 - \Xi_{bc}^{+}) for the heavy baryons are obtained. In addition, the masses of \Sigma_b^0, \Xi_b^0, and \Xi_{cc}^{++} are predicted based on the known experimental data.

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