# Strong isospin violation and chiral logarithms in the baryon spectrum

@article{Brantley2016StrongIV, title={Strong isospin violation and chiral logarithms in the baryon spectrum}, author={D. A. Brantley and B{\'a}lint Jo{\'o} and Ekaterina V. Mastropas and Emanuele Mereghetti and Henry Monge-Camacho and Brian Tiburzi and Andr{\'e} Walker-Loud}, journal={arXiv: High Energy Physics - Lattice}, year={2016} }

We present a precise lattice QCD calculation of the contribution to the neutron-proton mass splitting arising from strong isospin breaking, $m_n-m_p|_{QCD}=2.32\pm0.17$ MeV. We also determine $m_{\Xi^-} - m_{\Xi^0}|_{QCD} = 5.44\pm0.31$ MeV. The calculation is performed at three values of the pion mass, with several values of the quark mass splitting and multiple lattice volumes, but only a single lattice spacing and an estimate of discretization errors. The calculations are performed on the…

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## References

SHOWING 1-10 OF 55 REFERENCES

### Proceedings

- 1947

s: Keynote voordrachten 9 Abstracts: VK Prijs (voordrachten) 13s: VK Prijs (voordrachten) 13 Abstracts: VK Prijs (postermededelingen) 27s: VK…

### Phys

- Lett. B669, 246
- 2008

### JHEP 12

- 097
- 2012

### Nucl

- Phys. A764, 274
- 2006

### Phys

- Lett. 88B, 123 (1979), [Erratum: Phys. Lett.91B,487
- 1980

### Physica A96

- 327
- 1979

### Phys

- Lett. B255, 558
- 1991

### Phys

- Lett. B240, 447
- 1990