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The 4He Total Photo-Absorption Cross Section With Two- Plus Three-Nucleon Interactions From Chiral Effective Field Theory

Journal Article · · Physics Letters B, vol. 652, n/a, June 25, 2007, pp. 370-375
The total photo-absorption cross section of {sup 4}He is evaluated microscopically using two- (NN) and three-nucleon (NNN) interactions based upon chiral effective field theory ({chi}EFT). The calculation is performed using the Lorentz integral transform method along with the ab initio no-core shell model approach. An important feature of the present study is the consistency of the NN and NNN interactions and also, through the Siegert theorem, of the two- and three-body current operators. This is due to the application of the {chi}EFT framework. The inclusion of the NNN interaction produces a suppression of the peak height and enhancement of the tail of the cross section. We compare to calculations obtained using other interactions and to representative experiments. The rather confused experimental situation in the giant resonance region prevents discrimination among different interaction models.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
Sponsoring Organization:
USDOE
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
920876
Report Number(s):
UCRL-JRNL-229340
Journal Information:
Physics Letters B, vol. 652, n/a, June 25, 2007, pp. 370-375, Journal Name: Physics Letters B, vol. 652, n/a, June 25, 2007, pp. 370-375 Vol. 652
Country of Publication:
United States
Language:
English

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