This title appears in the Scientific Report :
2017
Please use the identifier:
http://hdl.handle.net/2128/14959 in citations.
Towards a determination of the ratio of the kaon to pion decay constants
Towards a determination of the ratio of the kaon to pion decay constants
The SU(3) flavour symmetry breaking expansion in up, down and strange quark masses is extended from hadron masses to meson decay constants. This allows a determination of the ratio of kaon to pion decay constants in QCD. Furthermore when using partially quenched valence quarks the expansion is such...
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Personal Name(s): | Bornyakov, V. G. |
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Horsley, R. (Corresponding author) / Nakamura, Y. / Perlt, H. / Pleiter, Dirk / Rakow, P. E. L. / Schierholz, G. / Schiller, A. / Stüben, H. / Zanotti, J. M. | |
Contributing Institute: |
Jülich Supercomputing Center; JSC |
Published in: | Proceedings of Science, LATTICE2016 (2017) S. 284 |
Imprint: |
Trieste
SISSA
2017
|
Physical Description: |
6 p. |
Conference: | 34th annual International Symposium on Lattice Field Theory, Southampton (UK), 2016-07-24 - 2016-07-30 |
Document Type: |
Contribution to a conference proceedings Journal Article |
Research Program: |
Computational Science and Mathematical Methods |
Link: |
Get full text OpenAccess |
Publikationsportal JuSER |
The SU(3) flavour symmetry breaking expansion in up, down and strange quark masses is extended from hadron masses to meson decay constants. This allows a determination of the ratio of kaon to pion decay constants in QCD. Furthermore when using partially quenched valence quarks the expansion is such that SU(2) isospin breaking effects can also be determined. It is found that the lowest order SU(3) flavour symmetry breaking expansion (or Gell-Mann–Okubo expansion) works very well. Simulations are performed for 2+1 flavours of clover fermions at four lattice spacings. |