Two-Body Mechanisms in Pion Photoproduction on the Trinucleon

Autor:	L. Tiator, C. Bennhold, S. S. Kamalov
Rok vydání:	1995
Předmět:	Physics Particle physics Photon Nuclear Theory Momentum transfer FOS: Physical sciences General Physics and Astronomy Impulse (physics) Two-body problem High momentum Nuclear Theory (nucl-th) Nuclear physics Pion Nuclear Experiment Nucleon Wave function
Zdroj:	Physical Review Letters. 75:1288-1291
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.75.1288
Popis:	A breakdown of the Impulse Approximation is studied in pion photoproduction on $^3$He at high momentum transfers. The usual DWIA formalism with Faddeev wave functions which works well for small momentum transfers deviates from experimental measurements by up to two orders of magnitude for $Q^2>6 fm^{-2}$. It is found that the explicit inclusion of two-body mechanisms, where the photon is absorbed on one nucleon and the pion is emitted from another nucleon can restore agreement with the data. 10 pages, 3 figures (available as postscript files from the authors) Mainz preprint MKPH-T-94-13
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5d6882ba796ba95cd6caebbd7b82bff https://doi.org/10.1103/physrevlett.75.1288 Zobrazit plný text záznamu