Taking dibaryon fields seriously
| dc.creator | Soto, Joan | |
| dc.creator | Tarrus, Jaume | |
| dc.date | 2007-12-20 | |
| dc.date | 2008-06-30 | |
| dc.date.accessioned | 2026-07-07T11:54:46Z | |
| dc.date.available | 2026-07-07T11:54:46Z | |
| dc.description | We propose a low energy effective field theory of QCD at the scale of pion mass for the $N_B=2$ sector, $N_B$ being the baryon number, which contains two dibaryon fields in addition to the nucleons and pions. It has a well defined counting, is renormalizable and the nucleon-nucleon scattering amplitudes are manifestly unitary at leading order. We work out a lower energy effective theory for nucleons with energy much lower than the pion mass and three momentum comparable to it, which also has a well defined counting and is renormalizable. The dibaryon fields must also be kept as explicit degrees of freedom in this theory. We calculate the scattering amplitudes at next-to-leading order for the $^1S_0$ and $^3S_1$ channels in this framework and obtain an excellent description of the phase shifts for center of mass energies in the $0-50 MeV$ range. | |
| dc.description | 20 pages, 5 figures; misprints corrected, explanations enlarged, references added. Journal version | |
| dc.identifier | https://arxiv.org/abs/0712.3404 | |
| dc.identifier | http://arxiv.org/abs/0712.3404 | |
| dc.identifier | Phys.Rev.C78:024003,2008 | |
| dc.identifier | doi:10.1103/PhysRevC.78.024003 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/205024 | |
| dc.subject | Nuclear Theory | |
| dc.title | Taking dibaryon fields seriously | |
| dc.type | text |