Re: Charge is not a property of particles.
- From: "Rock Brentwood" <markwh04@xxxxxxxxx>
- Date: 15 Jul 2006 09:30:30 -0700
Igor wrote:
All particles have charge.This isn't true even for fundamental particles. What about neutrinos?
Where's their charge?
In the left-helicity state, the neutrino has hypercharge g'/2, baryon
number -1/2, isospin g/2 and "chromaticity" coordinates (0,0) for the
SU(3) color force (i.e. the weights represented by the lambda3 and
lambda8 generators of the standard representation of SU(3))... where g'
= e/cos(T) and g = e/sin(T), where T is the weak mixing angle.
The neutrino is not known to exist in the right-helicity state (though
it is widely surmised, now, to do so). Its charge vector would be,
respectively, (0, -1/2, 0, 0, 0).
Baryon number is not known to be other than a global symmetry and,
therefore, not known to be associated with any force. Absent it, the
right-neutrino would be completely neutral and, therefore (almost)
completely invisible and undetectable. Only interaction with the Higgs
and gravity would reveal it. The mode of interaction between neutrinos
and the Higgs is an open issue (as is the existence of the Higgs).
.
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