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Author
Hiller Blin, A.N.
;
Ledwig, T.
;
Vicente Vacas, M.J.
Title
Chiral dynamics in the (gamma)over-right-arrowp -> p pi(0) reaction
Type
Journal Article
Year
2015
Publication
Physics Letters B
Abbreviated Journal
Phys. Lett. B
Volume
747
Issue
Pages
217-222
Keywords
Abstract
We investigate the neutral pion photoproduction on the proton near threshold in covariant chiral perturbation theory with the explicit inclusion of A degrees of freedom. This channel is specially sensitive to chiral dynamics and the advent of very precise data from the Mainz microtron has shown the limits of the convergence of the chiral series for both the heavy baryon and the covariant approaches. We show that the inclusion of the Delta resonance substantially improves the convergence leading to a good agreement with data for a wider range of energies.
Address
[Vicente Vacas, M. J.] Univ Valencia, Ctr Mixto, CSIC, Dept Fis Teor,Inst Invest Paterna, E-46071 Valencia, Spain, Email: manuel.j.vicente@uv.es
Corporate Author
Thesis
Publisher
Elsevier Science Bv
Place of Publication
Editor
Language
English
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
0370-2693
ISBN
Medium
Area
Expedition
Conference
Notes
WOS:000358624800038
Approved
no
Is ISI
yes
International Collaboration
no
Call Number
IFIC @ pastor @
Serial
2330
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