Contribution to a conference proceedings/Internal Report

FZJ-2015-04985

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Determining 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

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Please use a persistent id in citations: http://hdl.handle.net/2128/10197

Report No.: PoS(LATTICE2014)110

Abstract: SU2 isospin breaking effects in baryon octet (and decuplet) masses are due to a combination of up and down quark mass differences and electromagnetic effects. These mass differences are small. Between the Sigma and Lambda the mass splitting is much larger, but this is mostly due to their different wavefunctions. However there is now also mixing between these states. We determine the QCD mixing matrix and hence find the mixing angle and mass splitting.

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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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