Otro
Shape-independent expansion for the 3S1 - 3D1 mixing parameter
Registro en:
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, v. 318, n. 1, p. 14-18, 1993.
0370-2693
10.1016/0370-2693(93)91775-I
WOS:A1993MH90900003
2-s2.0-0002460326
Autor
Adhikari, Sadhan K.
Tomio, Lauro
Melo, J. P. B. C. de
Frederico, T.
Resumen
A low-energy shape-independent expansion is suggested for the function tan(2εBB)/(2k2), where εBB is the Blatt-Biedenharn mixing parameter for the 3S1 - 3D1 channel. This expansion allows an evaluation of the mixing parameter εBB from a knowledge of the deuteron asymptotic D to S ratio, pion mass and other low-energy observables, such as the scattering lengths, deuteron binding etc., of the nucleon-nucleon system. We demonstrate that the correct long range behavior of the tensor potential is essential for a realistic reproduction of εBB.