- Publication venue
- 'Elsevier BV'
- Publication date
- 09/11/1994
- Field of study
The diquark model is used to calculate the electromagnetic polarizabilities
and charge radii of the nucleons for three different potentials. Making the
scalar diquark lower in mass introduces a mixing angle ΞΈ between the
β£56β© and β£70β© states ,which allows an
improvement in value of all 6 properties. Generalizing the Gamov-Teller matrix
and the magnetic moment operator to the diquark model gives constraints on this
mixing. We obtain for the Richardson potential ΞΈ=23.2β,
Ξ±pβ=7.9β0.9+1.0βΓ10β4fm3, Ξ±nβ=7.7β0.6+0.3βΓ10β4fm3, Ξ²βpβ=5.4β0.4+1.6βΓ10β4fm3, Ξ²βnβ=6.7β0.7+1.3βΓ10β4fm3, β¨r2β©pβ=0.37β0.03+0.02βfm2, β¨r2β©nβ=β0.07β0.02+0.03βfm2. Additional pion cloud contributions could
improve on all six results.Comment: 15 Pages, Latex, Figs on request, to be published Phys.Lett.B. Minor
errors corrected and eqn 5,6,8,9 correcte