Octet baryon mass splittings from up-down quark mass differences
| Autor: | Horsley, R., Najjar, J., Nakamura, Y., Pleiter, D., Rakow, P. E. L., Schierholz, G., Zanotti, J. M. |
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| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | PoS(Lattice 2012)135 |
| Druh dokumentu: | Working Paper |
| Popis: | Using an SU(3) flavour symmetry breaking expansion in the quark mass, we determine the QCD component of the neutron-proton, Sigma and Xi mass splittings of the baryon octet due to up-down (and strange) quark mass differences. Provided the average quark mass is kept constant, the expansion coefficients in our procedure can be determined from computationally cheaper simulations with mass degenerate sea quarks and partially quenched valence quarks. Full details and numerical results are given in ref 1. Comment: Talk presented at the XXX International Symposium on Lattice Field Theory (Lattice 2012), June 24-29, 2012, Cairns, Australia |
| Databáze: | arXiv |
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