Are quarks really considered fundamental particles that cannot be divided further? If an up quark can transmute to a down quark and release a W+ boson which decays to a positron and a neutrino (for example) - doesn't this mean that there is substructure to a quark?
What exactly is it that makes...
okay thanks I wasn't quite sure =) So presumably you mean the spin and mass are the same but the charge is positive or negative but the same value either way.
But I am still not clear about which situation would generate a W+ or a W-
Also, do W+ and a W- ever collide in the atom? If so, what...