One-pion-exchange three-nucleon force and theAypuzzle
| Autor: | L. Canton, W. Schadow |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Physics
Scattering cross-section Nuclear and High Energy Physics Particle physics 010308 nuclear & particles physics Scattering Nuclear Theory Diagram Structure (category theory) Neutron scattering 01 natural sciences Pion 0103 physical sciences Nuclear Experiment 010306 general physics Nucleon Nuclear theory Mathematical physics |
| Zdroj: | Physical Review C. 64 |
| ISSN: | 1089-490X 0556-2813 |
| DOI: | 10.1103/physrevc.64.031001 |
| Popis: | We consider a new three-nucleon force generated by the exchange of one pion in the presence of a 2N correlation. The underlying irreducible diagram has been recently suggested by the authors as a possible candidate to explain the puzzle of the vector analyzing powers $A_y$ and $iT_{11}$ for nucleon-deuteron scattering. Herein, we have calculated the elastic neutron-deuteron differential cross section, $A_y$, $iT_{11}$, $T_{20}$, $T_{21}$, and $T_{22}$ below break-up threshold by accurately solving the Alt-Grassberger-Sandhas equations with realistic interactions. We have also studied how $A_y$ evolves below 30 MeV. The results indicate that this new 3NF diagram provides one possible additional contribution, with the correct spin-isospin structure, for the explanation of the origin of this puzzle. |
| Databáze: | OpenAIRE |
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