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Re: Query on Neutrinoless Double Beta decay.



In a message dated 4/7/02 12:35:49 AM Eastern Standard Time, jlu@HEP.ANL.GOV
writes:

<< I don't understand. The issue is whether or not the electron
neutrino is, or is not, its own antiparticle. Decay rates are readily
calculated in either event. The reported experiment, done over a very
long period of time, seems to give a decay rate consistent with that for
which the neutrino is its own antiparticle. Looking at the paper, I don't
find the reported decay rate to be very convincing.
Is there compelling evidence for the Fitzgerald model that
distinguishes that model from the standard model (which does not comment
on the issue at hand)?
Regards,
Jack >>
Yes there is another issue which perhaps I should try to clarify. First this
particular point concerning the Fitzpatrick fermion model (Which is an
attempt to modestly extend the standard model to account for Fermion
families.) is my own personal view. As of now he hasn't signed on to my
opinion concerning this consequence of his idea. However very briefly, his
model postulates fermion flavor dynamics in terms of what he calls a vector
triad in a Lorenz two space. Q=U+V . He mentions in his new paper (which
will probably be in the LANL archive this week) that for all diagonal weak
transitions, deltaU and deltaV equals zero. Only in off diagonal transitions
do we get a deltaU and deltaV not equal to zero. These transition
probabilities, which are defined by the CKM matrix, makes off diagonal
transitions much less probable than diagonal transitions. He suggest Fermions
"prefer" transitions where deltaU and deltaV equal zero. This implies a
tendency to conserve this global charges. My take on this is that all fermion
transitions, except in those cases which involve flavor mixing i.e. neutrino
mixing or Cabibbo mixing, will always conserve the scalar values of both the
U and V two space vectors. Based on this, all observed neutrinos are in fact
Dirac particles, and neutrino double beta decays will not be observed.
Observable Majorana neutrinos would violate this hypothetical conservation of
these global charges. Also in his model, anti neutrinos are clearly C
reversed neutrinos which I believe would also preclude the observation of
Majorana neutrinos. In this way I hope to suggest an additional observational
constrain on Fitzpatrick's model. BTW in the hypothetical proton decay
postulated by SU(5) GUT's and other GUT theories it is easy to show that if
in fact Fermions carry these postulated global charges we maintain deltaU and
deltaV equal to zero during this decay also.

Bob Zannelli