Author/Authors :
Nilsson، L. نويسنده , , Dangtip، S. نويسنده , , Blomgren، J. نويسنده , , Olsson، N. نويسنده , , Conde، H. نويسنده , , Elmgren، K. نويسنده , , Rahm، J. نويسنده , , Ringborn، A. نويسنده , , Tibell، G. نويسنده , , Jonsson، O. نويسنده , , Renberg، P.-U. نويسنده , , Werf، S.Y. van der نويسنده ,
Abstract :
We apply the effective field theory approach to the three-nucleon system. In particular, we consider S = 1 /2 neutron-deuteron scattering and the triton. We show that in this channel a unique nonperturbative renormalization takes place which requires the introduction of a single three-body force at leading order. With one fitted parameter we find a good description of low-energy data. Invariance under the renormalization group explains some universal features of the three-nucleon system - such as the Thomas and Efimov effects and the Phillips line - and the origin of SU(4) symmetry in nuclei.
Keywords :
Measured sigma(Ep. teta) , DWBA calculations , NUCLEAR RLACTION 9Be(n,p) , 12C(n,p) , E = 96 MeV , Deduced Gamow-Teller strength
