Horsley, R. and Najjar, J. and Nakamura, Y. and Perlt, H. and Pleiter, D. and Rakow, P. E. L. and Schierholz, G. and Schiller, A. and Stueben, H. and Zanotti, J. M. (2015) Lattice determination of Sigma-Lambda mixing. PHYSICAL REVIEW D, 91 (7): 074512. ISSN 1550-7998, 1550-2368
Full text not available from this repository.Abstract
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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | QUARK MASSES; QCD; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 22 Jul 2019 13:01 |
| Last Modified: | 22 Jul 2019 13:01 |
| URI: | https://pred.uni-regensburg.de/id/eprint/5639 |
Actions (login required)
 |
View Item |
