Effects of the Tucson-Melbourne three-nucleon force on proton spectra from kinematically incomplete neutron-deuteron breakup experiments

Journal Article · Wed Mar 01 04:00:00 EST 1995 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.51.1095· OSTI ID:6403612

Witala, H; Golak, J ^[1]; Tornow, W ^[2]; Gloeckle, W; Hueber, D ^[3]

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1. Institute of Physics, Jagellonian University, PL-30059 Cracow (Poland)
2. Department of Physics, Duke University, Durham, North Carolina 27708 (United States) Triangle Universities Nuclear Laboratory, Duke Station, Durham, North Carolina 27708 (United States)
3. Institut fuer Theoretische Physik II, Ruhr-Universitaet Bochum, D-44780, Bochum (Germany)

We present calculated proton spectra for the kinematically incomplete neutron-deuteron breakup reaction using a realistic nucleon-nucleon potential (Bonn B) and the Tuscon-Melbourne three-nucleon force. We found that the three-nucleon force influences the high-energy part of the proton energy spectrum. The size of the effect depends on the cutoff parameter [Lambda][sub [pi]] of the [pi][ital NN] form factor and diminishes with increasing energy. The Tucson-Melbourne three-nucleon force with [Lambda][sub [pi]]=5.8 [ital m][sub [pi]] does not explain the scatter in the values recently obtained for the neutron-neutron scattering length [ital a][sub [ital n][ital n]] from the analysis of published proton energy spectra using a realistic two-nucleon force only, but it reduces considerably the large discrepancy between the [ital a][sub [ital n][ital n]] values obtained from kinematically incomplete [ital nd] breakup experiments and the [pi][sup [minus]][ital d] capture reaction.

• OSTI ID: 6403612
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 51:3; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

662430 -- Properties of Leptons-- (1992-)
663110* -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON-BARYON INTERACTIONS
BREAKUP REACTIONS
DIMENSIONS
ENERGY SPECTRA
FORM FACTORS
HADRON-HADRON INTERACTIONS
INTERACTIONS
LENGTH
NEUTRON-DEUTERON INTERACTIONS
NEUTRON-NEUTRON INTERACTIONS
NUCLEAR REACTIONS
NUCLEON-DEUTERON INTERACTIONS
NUCLEON-NUCLEON INTERACTIONS
NUCLEON-NUCLEON POTENTIAL
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
POTENTIALS
PROTON SPECTRA
SCATTERING LENGTHS
SPECTRA