HEAVY MAJORANA NEUTRINOS IN e e COLLISIONS
نویسنده
چکیده
We discuss the process e ? e ? ! W ? W ? mediatedby heavy Majorana neutrino exchange in the t-and u channel. In our model the cross section for this reaction is a function of the masses (m N) of the heavy Majorana neutrinos and mixing parameters (U eN) originating from mixing between the ordinary left-handed standard model neutrinos and additional singlet right-handed neutrino elds. Taking into account the standard model background and constraints from low energy measurements, we present discovery limits in the (m N ; U 2 eN) plane. We also discuss how to measure in principle the CP violating phases, i.e., the relative phases between the mixing parameters.
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Article history: Received 22 January 2015 Received in revised form 15 May 2015 Accepted 28 June 2015 Available online 2 July 2015 Editor: M. Doser
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