Journal Article

FZJ-2020-00369

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Isospin splittings in the decuplet baryon spectrum from dynamical QCD + QED

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

2019
IOP Publ. Bristol

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Please use a persistent id in citations: http://hdl.handle.net/2128/23946  doi:10.1088/1361-6471/ab32c1

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 isospin splittings within the approximate SU(2) multiplets that are compatible with phenomenological estimates. Further, new insight is gained into these splittings by separating the contributions arising from strong and electromagnetic effects. We also present an update of earlier results on the octet baryon spectrum.

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Contributing Institute(s):

1. Jülich Supercomputing Center (JSC)
2. JARA - HPC (JARA-HPC)

Research Program(s):

1. 513 - Supercomputer Facility (POF3-513) (POF3-513)
2. Axion and electric dipole moment of the nucleon (jikp05_20181101) (jikp05_20181101)

Appears in the scientific report 2019

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; National-Konsortium ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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