Chiral Dynamics in Photo-Pion Physics: Theory, Experiment, and Future Studies at the HI$γ$S Facility

Details Chiral Dynamics in Photo-Pion Physics: Theory, Experiment, and Future Studies at the HI$γ$S Facility Chiral Dynamics in Photo-Pion Physics: Theory, Experiment, and Future Studies at the HI$γ$S Facility

2009-02-20

arxiv.org/abs/0902.3650v1

Ann.Rev.Nucl.Part.Sci.59:115-144,2009

Physics

Nuclear Physics

Nuclear Experiment

61 pages, 10 figures, 2 tables

Scientific paper

10.1146/annurev.nucl.010909.0832

A review of photo-pion experiments on the nucleon in the near threshold region is presented. Comparisons of the results are made with the predictions of the low energy theorems of QCD calculated using chiral perturbation theory (ChPT) which is based on the spontaneous breaking of chiral symmetry as well as its explicit breaking due to the finite quark masses. As a result of the vanishing of the threshold amplitudes in the chiral limit, the experiments are difficult since the cross sections are small. Nevertheless the field has been brought to a mature stage of accuracy and sensitivity. The accomplishments and limitations of past experiments are discussed. Future planned experiments at Mainz and HI$\gamma$S using polarization observables are discussed as a more rigorous test of theoretical calculations. Emphasis is given to the technical developments that are required for the HI$\gamma$S facility. It is shown that future experiments will provide more accurate tests of ChPT and will be sensitive to isospin breaking dynamics due to the mass difference of the up and down quarks.

Affiliated with

Also associated with

No associations

Rating

Chiral Dynamics in Photo-Pion Physics: Theory, Experiment, and Future Studies at the HI$γ$S Facility 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 Chiral Dynamics in Photo-Pion Physics: Theory, Experiment, and Future Studies at the HI$γ$S Facility, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chiral Dynamics in Photo-Pion Physics: Theory, Experiment, and Future Studies at the HI$γ$S Facility will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-370162