Current non-conservation effects in ultra-high energy neutrino interactions |
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| Authors: | R Fiore and V R Zoller |
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| Institution: | 1.Dipartimento di Fisica, Università della Calabria and Istituto Nazionale di Fisica Nucleare,Gruppo collegato di Cosenza,Rende, Cosenza,Italy;2.Institute for Theoretical and Experimental Physics,Moscow,Russia |
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| Abstract: | The overall hardness scale of the ultra-high energy neutrino-nucleon interactions is usually estimated as Q
2 ∼ m
w
2 The effect of non-conservation of weak currents pushes this scale up to the top quark mass squared and changes dynamics of
the scattering process. The Double Leading Log Approximation provides simple and numerically accurate formula for the top-bottom
contribution to the total cross section σνN
. Corresponding correction to σνN
appears to be numerically large. It is comparable with the leading contribution evaluated in the massless quark approximation. |
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| Keywords: | |
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