Journal Article

FZJ-2015-04984

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Lattice determination of Sigma-Lambda mixing

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

2015
Soc. [S.l.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/8983  doi:10.1103/PhysRevD.91.074512

Abstract: Isospin breaking effects in baryon octet (and decuplet) masses are due to a combination of up and down quark mass differences and electromagnetic effects and lead to small mass splittings. Between the Sigma and Lambda this mass splitting is much larger, this being mostly due to their different wave functions. However when isospin is broken, there is a mixing between these states. We describe the formalism necessary to determine the QCD mixing matrix and hence find the mixing angle and mass splitting between the Sigma and Lambda particles due to QCD effects.

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Contributing Institute(s):

1. Jülich Supercomputing Center (JSC)

Research Program(s):

1. 511 - Computational Science and Mathematical Methods (POF3-511) (POF3-511)

Appears in the scientific report 2015

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Database coverage:
; ; ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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