This title appears in the Scientific Report :
2015
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevD.91.074512 in citations.
Please use the identifier: http://hdl.handle.net/2128/8983 in citations.
Lattice determination of Sigma-Lambda mixing
Lattice determination of Sigma-Lambda mixing
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...
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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: | Physical Review D Physical review / D, 91 91 (2015 2015) 7 7, S. 074512 074512 |
Imprint: |
[S.l.]
Soc.
2015
2015-04-14 2015-04-01 |
DOI: |
10.1103/PhysRevD.91.074512 |
Document Type: |
Journal Article |
Research Program: |
Computational Science and Mathematical Methods |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/8983 in citations.
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. |