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Abstract / Description of output
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.
Original language | English |
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Article number | 074512 |
Number of pages | 22 |
Journal | Physical Review D |
Volume | 91 |
Issue number | 7 |
DOIs | |
Publication status | Published - 14 Apr 2015 |
Keywords / Materials (for Non-textual outputs)
- QUARK MASSES
- QCD
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Dive into the research topics of 'Lattice determination of Sigma-Lambda mixing'. Together they form a unique fingerprint.Projects
- 1 Finished
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Particle Theory at the Higgs Centre
Ball, R., Berera, A., Boyle, P., Callison-Burch, C., Del Debbio, L., Gardi, E., Kennedy, A., O'Connell, D., Zwicky, R., Berera, A., Boyle, P., Buckley, A., Del Debbio, L., Gardi, E., Horsley, R., Kennedy, A., Kenway, R., O'Connell, D., Smillie, J. & Zwicky, R.
1/10/14 → 30/09/18
Project: Research