Signals for Majorana neutrinos in a $γγ$ collider

Details Signals for Majorana neutrinos in a $γγ$ collider Signals for Majorana neutrinos in a $γγ$ collider

2002-11-22

arxiv.org/abs/hep-ph/0211355v1

Phys.Rev. D67 (2003) 017302

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 5 figures, Latex, to appear in Phys.Rev.D

Scientific paper

10.1103/PhysRevD.67.017302

We study the possibilities to detect Majorana neutrinos in $\gamma \gamma$ colliders for different center of mass energies. We study the $W^\pm W^\pm l_j^{\mp} l_k^{\mp}$ ($l_j\equiv e ,\mu ,\tau$) final states which are, due to leptonic number violation, a clear signature for intermediate Majorana neutrino contribution. Such a signal (final dileptons of the same sign) is not possible if the heavy neutrinos are Dirac particles. We present our results for the total cross-section as a function of the neutrino mass and the center of mass energies.

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