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The phenomenology of [Formula: see text] mixing involves four parameters: average width Γ, mixing ratio |q|p|, mass difference proportional to x, and width difference proportional to y. We point out the types of experimental inputs that are eventually needed in order to determine the four parameters completely and in a model-independent way. For the sign of y we suggest the measurement (at ϒ(4S) factories) of a certain time-asymmetry when one of the neutral B mesons is tagged and the other decays to a CP-eigenstate. For the sign of x we propose similar time-asymmetries when one of the B mesons undergoes the chain decay: B→KJ/ψ, and the neutral kaon →πlν or π+π−.

Neutrino counting at e + e -colliders can be used to provide a limit on the magnetic moment of the .r neutrino. We obtain a limit of p < 5.6 X 1 0~~~~ at 90% C.L.

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On p. 191, the sentence containing the very first displayed equation should be completed by adding the following after the semicolon: "we assume CPT invariance throughout, and take i8) =CPilB); we define the symbols mpmi On p. 192, in the equation displayed before Eq. (8), the expression [1 -Re(r;ri )] on the extreme right should read [1 -2 Re(r; rz* )]. .

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