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Isospin splittings in the decuplet baryon spectrum from dynamical QCD + QED

Horsley, R. ; Koumi, Z. ; Nakamura, Y. ; Perlt, H. ; Pleiter, D. ; Rakow, P. E. L. ; Schierholz, G. ; Schiller, A. ; Stüben, H. ; Young, R. D. ; Zanotti, J. M.



Abstract

We report a new analysis of the isospin splittings within the decuplet baryon spectrum. Our numerical results are based upon five ensembles of dynamical QCD + QED lattices. The analysis is carried out within a flavour-breaking expansion which encodes the effects of breaking the quark masses and electromagnetic charges away from an approximate SU(3) symmetric point. The results display total ...

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