Consistent threshold pi0 electro-production at Q^2=0.05, 0.10, and 0.15 GeV^2/c^2
Nuclear Experiment
2011-09-26 v1
Abstract
New, accurate data are presented on the near threshold p(e,e'p)pi^0 reaction in the range of four-momentum transfers between Q^2=0.05 and 0.15GeV^2/c^2. The data were taken with the spectrometer setup of the A1 Collaboration at the Mainz Microtron MAMI. The complete center of mass solid angle was covered up to a center of mass energy of 4MeV above threshold. These results supersede the previous analysis based on three separate experiments, and are compared with calculations in Heavy Baryon Chiral Perturbation Theory and with phenomenological models.
Keywords
Cite
@article{arxiv.1109.5075,
title = {Consistent threshold pi0 electro-production at Q^2=0.05, 0.10, and 0.15 GeV^2/c^2},
author = {H. Merkel and P. Achenbach and C. Ayerbe Gayoso and M. Ases Antelo and D. Baumann and A. M. Bernstein and R. Böhm and D. Bosnar and M. Ding and M. O. Distler and L. Doria and J. Garcia Llongo and D. W. Higinbotham and G. Jover Mañas and M. Makek and U. Müller and R. Neuhausen and L. Nungesser and R. Pérez Benito and J. Pochodzalla and M. Seimetz and S. Sirca and S. Stave and Th. Walcher and M. Weis},
journal= {arXiv preprint arXiv:1109.5075},
year = {2011}
}
Comments
7 pages, 9 figures