A next-to-next-to-leading order pp -> pp\pi^0 transition operator in chiral perturbation theory
Nuclear Theory
2008-11-26 v2
Abstract
We discuss the results of a systematic calculation of the next-to-next-to-leading order amplitude for the pp -> pp\pi^0 S-wave production at the threshold in heavy-baryon chiral perturbation theory. We find six new diagrams, two of which can be viewed as vertex corrections, of 15 - 20 %, to the pion-exchange graph, whereas the rest are much larger, one exceeding 900 %. We discuss the reasons for this enhancement, as well as the steps necessary to be taken before the final comparison with experiment.
Keywords
Cite
@article{arxiv.nucl-th/9908023,
title = {A next-to-next-to-leading order pp -> pp\pi^0 transition operator in chiral perturbation theory},
author = {V. Dmitrašinović and K. Kubodera and F. Myhrer and T. Sato},
journal= {arXiv preprint arXiv:nucl-th/9908023},
year = {2008}
}
Comments
4 pages, 2 figures, talk delivered at PANIC99, correction of column VII in Table 1 and corresponding change of one sentence in the text on p.3