This article has an erratum: [https://doi.org/10.1209/epl/i2002-00107-2]
Volume 58, Number 2, April 2002
|Page(s)||202 - 208|
|Published online||01 August 2002|
Pion contribution to -nucleus scattering from chiral Lagrangian
CCAST(World Laboratory) - P.O. Box 8730,
Beijing 100080, PRC
2 Department of Physics, Nankai University - Tianjin 300071, PRC
3 Institute of Theoretical Physics - Beijing 100080, PRC
Accepted: 22 January 2002
The interactions with the on- and off-mass-shell virtual pions in nuclei are evaluated in the chiral perturbation theory at the leading order. It is found that the contribution of the nuclear pions to the ratio of the cross-sections for nuclei and is about 9%. Inclusion of the off-mass-shell behavior of the amplitude may produce a significant improvement to the systematic discrepancies between the experiment data and optical model calculations on the ratio R.
PACS: 24.10.Jv – Relativistic models / 25.45.De – Elastic and inelastic scattering
© EDP Sciences, 2002
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