Statistics – Applications
Scientific paper
Sep 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009phrvc..80c5505l&link_type=abstract
Physical Review C, vol. 80, Issue 3, id. 035505
Statistics
Applications
Applications Of Electroweak Models To Specific Processes, Nucleon-Nucleon Interactions, Nuclear Tests Of Fundamental Interactions And Symmetries, Nuclear Matter Aspects Of Neutron Stars, Applications Of Electroweak Models To Specific Processes, Nucleon-Nucleon Interactions, Nuclear Tests Of Fundamental Interactions And Symmetries, Nuclear Matter Aspects Of Neutron Stars
Scientific paper
Background: Nucleon-nucleon (NN) bremsstrahlung processes NNγ (nnγ, npγ, and ppγ) have been extensively investigated. Neutrino-pair bremsstrahlung processes from nucleon-nucleon scattering NNνν¯ (nnνν¯, npνν¯, and ppνν¯) have recently attracted attention in studies of neutrino emission in neutron stars. The calculated NNνν¯ cross sections (or emissivities) are found to be sensitive to the two-nucleon dynamical model used in the calculations. Purpose and Method: A realistic one-boson-exchange (ROBE) model for NN interactions is used to construct the electroweak bremsstrahlung amplitudes using the well-known nucleon electromagnetic and weak interaction vertices. The constructed nnγ and nnνν¯ amplitudes are investigated by applying them to calculate nnγ and nnνν¯ cross sections, respectively. Results: (i) The 190-MeV ROBE nnγ cross sections agree well with those calculated using the TuTts amplitude, but they are in disagreement with those calculated using the Low amplitude. (ii) The calculated nnνν¯ cross sections using the ROBE amplitude at the neutrino-pair energy ω = 1 MeV are in quantitative agreement with those calculated by Timmermans [Phys. Rev. C 65, 064007 (2002)], who used the leading-order term of the soft neutrino-pair bremsstrahlung amplitude. Conclusions: The nnγ amplitude in the ROBE approach, which obeys the soft-photon theorem, has a predictive power similar to that of the TuTts amplitude. The nnνν¯ amplitude in the ROBE approach, which is consistent with the soft neutrino-pair bremsstrahlung theorem, has a predictive power similar to that of the soft neutrino-pair bremsstrahlung amplitude of Timmermans in the low neutrino-pair energy region.
Li Yadong
Liou M. K.
Schreiber W. M.
No associations
LandOfFree
Electroweak bremsstrahlung from neutron-neutron scattering does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Electroweak bremsstrahlung from neutron-neutron scattering, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electroweak bremsstrahlung from neutron-neutron scattering will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1074657