Journal Article

FZJ-2015-03863

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Signatures of the chiral two-pion exchange electromagnetic currents in the H $^{2}$ and He $^{3}$ photodisintegration reactions

Rozpędzik, D. ; Golak, J.FZJ* ; Kölling, S. ; Epelbaum, E.FZJ* ; Skibiński, R. ; Witała, H. ; Krebs, H.

2011
Inst. Woodbury, NY

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Please use a persistent id in citations: http://hdl.handle.net/2128/8801  doi:10.1103/PhysRevC.83.064004

Abstract: The recently derived long-range two-pion exchange (TPE) contributions to the nuclear current operator that appear at next-to-leading order (NLO) of the chiral expansion are used to describe electromagnetic processes. We study their role in the photodisintegration of H2 and He3 and compare our predictions with the experimental data. The bound and scattering states are calculated using five different parametrizations of the chiral next-to-next-to-leading order (NL2O) nucleon-nucleon (NN) potential, which allows us to estimate the theoretical uncertainty at a given order in the chiral expansion. For some observables the results are very close to the predictions based on the AV18 NN potential and the current operator (partly) consistent with this force. In most cases, the addition of long-range TPE currents improved the description of the experimental data.

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Contributing Institute(s):

1. Theorie der Starken Wechselwirkung (IAS-4)
2. Theorie der starken Wechselwirkung (IKP-3)

Research Program(s):

1. 531 - Hadron Structure and Dynamics (HSD) (POF2-531) (POF2-531)

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Database coverage:
; ; ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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