This title appears in the Scientific Report :
2015
Please use the identifier:
http://hdl.handle.net/2128/10197 in citations.
Determining Sigma - Lambda mixing
Determining Sigma - Lambda mixing
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 w...
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Personal Name(s): | Horsley, R. (Corresponding author) |
---|---|
Najjar, J. / Nakamura, Y. / Perlt, H. / Pleiter, D. / Rakow, P. E. L. / Schierholz, G. / Schiller, A. / Stüben, H. / Zanotti, J. M. | |
Contributing Institute: |
Jülich Supercomputing Center; JSC |
Published in: |
The 32nd International Symposium on Lattice Field Theory |
Imprint: |
2015
|
Physical Description: |
7 p |
Conference: | 32nd International Symposium on Lattice Field Theory, New York (US), 2014-06-23 - 2014-06-28 |
Document Type: |
Contribution to a conference proceedings Internal Report |
Research Program: |
Computational Science and Mathematical Methods |
Link: |
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Publikationsportal JuSER |
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. |