The positron will be subject to EM forces that the neutron is not. It all depends on the level that you are looking at. Yes, when looking at the neutron on from the outside, you statement is correct. But when looking at the neutron on the inside, the charged quarks fell the electrostatic and magnetic field imposed on them from the outside due to virtual photons emitted by electrons.
Such electric and magnetic fields cohabitated with pions and virtual guons clouds inside the charge radius of the neutron. The quarks inside the neutron will became excited and the spin of the neutron might even flip. Because of EMF, the quarks draw apart due to their excitation and a dipole forms. A dipole means a spin strengthening is induced and a spin can be flipped by a magnetic field. See the nuclear Zeeman effect. On Fri, May 3, 2013 at 4:08 PM, Joseph S. Barrera III < [email protected]> wrote: > On 5/3/2013 1:00 PM, Harry Veeder wrote: > >> The positron resides inside the neutron. There is no reason for the >> positron to leave the neutron as long it is has no association with other >> particles. >> > > The positron will be subject to EM forces that the neutron is not. > The neutron will be subject to residual strong forces that the positron is > not. > If there is no force keeping them together, they will over time drift > apart. > It's not like the neutron has "walls" that can keep the positron in. > > Quarks stay inside a nucleon not because there are "walls" but because of > the strong force (which gets stronger as the quarks move further away from > each other). > > - Joe > >
