Near-threshold amplitude of pion-deuteron scattering: One-loop contributions

Authors
Tarasov, VE Baru, VV Kudryavtsev, AE
Citation
Ve. Tarasov et al., Near-threshold amplitude of pion-deuteron scattering: One-loop contributions, PHYS ATOM N, 63(5), 2000, pp. 801-811
Citations number
25
Categorie Soggetti
Physics
Journal title
PHYSICS OF ATOMIC NUCLEI
ISSN journal
10637788 → ACNP
Volume
63
Issue
5
Year of publication
2000
Pages
801 - 811
Database
ISI
SICI code
1063-7788(200005)63:5<801:NAOPSO>2.0.ZU;2-I
Abstract
The one-loop expression for the absorptive correction to the pi d scatterin g length is discussed. Relevant Feynman diagrams are calculated both in the relativistic and in the nonrelativistic formalism. A simple expression is obtained for the one-loop correction that arises in the pi d scattering len gth owing to the Fermi motion of the nucleons in the deuteron. This correct ion includes absorption effects. Fulfillment of the unitarity relation is v erified explicitly. (C) 2000 MAIK "Nauka/lnterperiodica".