Inverse Neutrinoless Double Beta Decay Revisited

Abstract

We critically reexamine the prospects for the observation of the $\Delta L=2$ lepton-number-violating process $\eeWW$ using the $e^{-}{e}^{-}$ option of a high-energy $e^{+}{e}^{-}$ collider (NLC). We find that, except in the most contrived scenarios, constraints from neutrinoless double beta decay render the process unobservable at an NLC of $\sqrt{s}<2$ TeV. Other $\Delta L=2$ processes such as $\ggllww$, $\egnllw$, $\eennll$ ($\ell =\mu ,\tau$), and $\egeww$, which use various options of the NLC, require a $\sqrt{s}$ of at least 4 TeV for observability.

paper in LATEX, 24 pages, 10 figures in separate uuencoded psfile. Complete psfile available via anonymous ftp at ftp://lapphp0.in2p3.fr/pub/preprints-theorie/doublebeta.uu or via www at http://lapphp0.in2p3.fr/preplapp/psth/doublebeta.ps.gz

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