Improved analysis of coherent neutral pion electroproduction on deuterium in chiral perturbation theorya

被引：0
|
作者：
H. Krebs
V. Bernard
U. -G. Meißner
机构：
[1] Universität Bonn,Laboratoire de Physique Théorique
[2] Université Louis Pasteur,undefined
[3] Forschungszentrum Jülich,undefined
来源：
The European Physical Journal A - Hadrons and Nuclei | 2004年 / 22卷
关键词：
25.30.Rw Electroproduction reactions; 12.39.Fe Chiral Lagrangians; 14.20.Dh Protons and neutrons;
D O I：
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学科分类号：
摘要：
Coherent near-threshold neutral pion electroproduction on the deuteron is studied in the framework of heavy baryon chiral perturbation theory. We include the next-to-leading-order corrections to the three-body contributions. We find an improved description of the total and differential cross-section data measured at MAMI. We also obtain more precise values for the threshold S-wave multipoles. We discuss in detail the theoretical uncertainties of the calculation.
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页码：503 / 514
页数：11
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