Neutral heavy lepton production at next high energy $e^+e^-$ linear colliders

Details Neutral heavy lepton production at next high energy $e^+e^-$ linear colliders Neutral heavy lepton production at next high energy $e^+e^-$ linear colliders

2000-08-18

arxiv.org/abs/hep-ph/0008201v2

Phys.Rev.D63:075005,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages including 15 figures, 1 table. RevTex. Accepted in Physical Review D

Scientific paper

10.1103/PhysRevD.63.075005

The discovery potential for detecting new heavy Majorana and Dirac neutrinos at some recently proposed high energy $e^+e^-$ colliders is discussed. These new particles are suggested by grand unified theories and superstring-inspired models. For these models the production of a single heavy neutrino is shown to be more relevant than pair production when comparing cross sections and neutrino mass ranges. The process $ e^+e^- \longrightarrow {\nu} e^{\pm} W^{\mp}$ is calculated including on-shell and off-shell heavy neutrino effects. We present a detailed study of cross sections and distributions that shows a clear separation between the signal and standard model contributions, even after including hadronization effects.

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