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Study of three-nucleon mechanisms in the photodisintegration of 3He

✍ Scribed by G. Audit; A. Braghieri; N. D'Hose; V. Isbert; S. Kerhoas; J.M. Laget; M. Mac Cormick; L.Y. Murphy; A. Panzeri; P. Pedroni; T. Pinelli; G. Tamas; J. Ahrens; J.R.M. Annand; R. Crawford; P. Grabmayr; S.J. Hall; J.D. Kellie

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
697 KB
Volume
614
Category
Article
ISSN
0375-9474

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✦ Synopsis

The cross section of the 'He( ~,pp)n reaction has been measured for the first time over a wide photon energy and proton angular range (200 MeV 5 E, < 800 MeV; 20" 5 SF" 5 160") using the large acceptance detector DAPHNE at the tagged photon facility of the MAMI microtron in Mainz. The wide kinematical coverage of the measurement has allowed a detailed analysis of threenucleon absorption mechanisms. A model developed by Laget explains the main characteristics of the data in the A resonance region.

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A benchmark is set on the three-nucleon photodisintegration calculating the total cross section with modern realistic two-and three-nucleon forces using both the Faddeev equations and the Lorentz integral transform method. This test shows that the precision of three-body calculations involving conti