Preprint

PUBDB-2021-04791

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Patterns of flavour symmetry breaking in hadron matrix elements involving u, d and s quarks

Bickerton, J. M. ; Cooke, A. N. ; Horsley, R. (Corresponding author) ; Nakamura, Y. ; Perlt, H. ; Pleiter, D. ; Rakow, P. E. L. ; Schierholz, G.DESY* ; Stuben, H. ; Zanotti, J. M. ; Young, R. D.

2021

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Please use a persistent id in citations: doi:10.3204/PUBDB-2021-04791

Report No.: DESY-21-213; arXiv:2112.04445

Abstract: Using an SU(3)-flavour symmetry breaking expansion between the strange and light quark masses, we determine how this constrains the extrapolation of baryon octet matrix elements and form factors. In particular we can construct certain combinations, which fan out from the symmetric point (when all the quark masses are degenerate) to the point where the light and strange quarks take their physical values. As a further example we consider the vector amplitude at zero momentum transfer for flavour changing currents.

Keyword(s): quark: mass ; symmetry breaking: flavor ; baryon: octet

Note: 8 pages, proceedings for The 38th International Symposium on Lattice Field Theory, LATTICE2021, 26th-30th July, 2021, Zoom/Gather@Massachusetts Institute of Technology

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Contributing Institute(s):

1. Theorie-Gruppe (T)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2021

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