This title appears in the Scientific Report :
2016
Please use the identifier:
http://dx.doi.org/10.1088/0954-3899/43/10/10LT02 in citations.
Isospin splittings of meson and baryon masses from three-flavor lattice QCD + QED
Isospin splittings of meson and baryon masses from three-flavor lattice QCD + QED
Lattice QCD simulations are now reaching a precision where isospin breaking effects become important. Previously, we have developed a program to systematically investigate the pattern of flavor symmetry beaking within QCD and successfully applied it to meson and baryon masses involving up, down and...
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Personal Name(s): | Horsley, R. |
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Nakamura, Y. / Perlt, H. / Pleiter, D. / Rakow, P. E. L. / Schierholz, G. (Corresponding author) / Schiller, A. / Stokes, R. / Stüben, H. / Young, R. D. / Zanotti, J. M. | |
Contributing Institute: |
Jülich Supercomputing Center; JSC John von Neumann - Institut für Computing; NIC |
Published in: | Journal of physics / G, 43 (2016) 10, S. 10LT02 - |
Imprint: |
Bristol
IOP Publ.
2016
|
DOI: |
10.1088/0954-3899/43/10/10LT02 |
Document Type: |
Journal Article |
Research Program: |
Hadron physics from lattice QCD + QED Computational Science and Mathematical Methods |
Publikationsportal JuSER |
Lattice QCD simulations are now reaching a precision where isospin breaking effects become important. Previously, we have developed a program to systematically investigate the pattern of flavor symmetry beaking within QCD and successfully applied it to meson and baryon masses involving up, down and strange quarks. In this Letter we extend the calculations to QCD + QED and present our first results on isospin splittings in the pseudoscalar meson and baryon octets. In particular, we obtain the nucleon mass difference of Mn - Mp = 1.35(18)(8)MeV and the electromagnetic contribution to the pion splitting Mπ+ Mπ4.60(20)MeV. Further we report first determination of the separation between strong and electromagnetic contributions in the MS scheme. |