Estimates of isospin breaking contributions to baryon masses

Details Estimates of isospin breaking contributions to baryon masses Estimates of isospin breaking contributions to baryon masses

2006-09-20

arxiv.org/abs/hep-ph/0609201v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 5 figures; changed title and content

Scientific paper

10.1103/PhysRevD.76.073004

We estimate the isospin breaking contributions to the baryon masses which we analyzed recently using a loop expansion in the heavy baryon approximation to chiral effective field theory. To one loop, the isospin breaking corrections come from the effects of the $d, u$ quark mass difference, the Coulomb and magnetic moment interactions, and effective point interactions attributable to color-magnetic effects. The addition of the first meson loop corrections introduces new structure. We estimate the resulting low-energy, long-range contributions to the mass splittings by regularizing the loop integrals using connections to dynamical models for finite-size baryons. We find that the resulting contributions to the isospin breaking corrections are of the right general size, have the correct sign pattern, and agree with the experimental values within the margin of error.

Affiliated with

Also associated with

No associations

Rating

Estimates of isospin breaking contributions to baryon masses does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Estimates of isospin breaking contributions to baryon masses, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Estimates of isospin breaking contributions to baryon masses will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-350848