Pair Production and Correlated Decay of Heavy Majorana Neutrinos in $e^+e^-$ Collisions

Details Pair Production and Correlated Decay of Heavy Majorana Neutrinos in $e^+e^-$ Collisions Pair Production and Correlated Decay of Heavy Majorana Neutrinos in $e^+e^-$ Collisions

1996-03-06

arxiv.org/abs/hep-ph/9603240v1

Phys.Rev. D54 (1996) 1944-1954

Physics

High Energy Physics

High Energy Physics - Phenomenology

24 pages, RevTeX, 12 eps figures, uses epsf.sty

Scientific paper

10.1103/PhysRevD.54.1944

We consider the process $e^+e^-\to N_1N_2$, where $N_1$ and $N_2$ are heavy Majorana particles, with relative $CP$ given by $\eta_{CP}=+1$ or $-1$, decaying subsequently via $N_1,N_2\to W^{\pm}e^{\mp}$. We derive the energy and angle correlation of the dilepton final state, both for like-sign ($e^{\mp}e^{\mp}$) and unlike-sign ($e^-e^+$) configurations. Interesting differences are found between the cases $\eta_{CP}=+1$ and $-1$. The characteristics of unlike-sign $e^+e^-$ dileptons originating from a Majorana pair $N_1N_2$ are contrasted with those arising from the reaction $e^+e^-\to N\bar{N}\to W^+e^-W^-e^+$, where $N\bar{N}$ is a Dirac particle-antiparticle pair.

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