Search for three-nucleon force effects on the longitudinal response function of {sup 4}He

Journal Article · Tue Dec 15 04:00:00 EST 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.80.064001· OSTI ID:21296562

Bacca, Sonia ^[1]; Barnea, Nir ^[2]; Leidemann, Winfried; Orlandini, Giuseppina ^[3]

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1. TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6J 2A3 (Canada)
2. Racah Institute of Physics, Hebrew University, 91904 Jerusalem (Israel)
3. Dipartimento di Fisica, Universita di Trento, and INFN (Gruppo Collegato di Trento), via Sommarive 14, I-38100 Trento (Italy)

A detailed study of the {sup 4}He longitudinal response function R{sub L}({omega},q) is performed at different kinematics, with particular emphasis on the role of three-nucleon forces. The effects reported are the results of an ab initio calculation where the full four-body continuum dynamics is considered via the Lorentz integral transform method. The contributions of the various multipoles to the longitudinal response function are analyzed, and integral properties of the response are discussed as well. The Argonne V18 nucleon-nucleon interaction and two three-nucleon force models (Urbana IX and Tucson-Melbourne') are used. At lower momentum transfers (q{<=}200 MeV/c) three-nucleon forces play an important role. One even finds a dependence of R{sub L} on the three-nucleon force model itself, with differences of up to 10%. Thus a Rosenbluth separation of the inclusive electron scattering cross section of {sup 4}He at low momentum transfers would be of great value for differentiating among force models.

• OSTI ID: 21296562
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 80; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CROSS SECTIONS
ELECTRONS
FOUR-BODY PROBLEM
HELIUM 4
INTEGRAL TRANSFORMATIONS
MEV RANGE 100-1000
MOMENTUM TRANSFER
MULTIPOLES
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
RESPONSE FUNCTIONS
SCATTERING