Extra dimensions and Seesaw Neutrinos at the International Linear Collider

Details Extra dimensions and Seesaw Neutrinos at the International Linear Collider Extra dimensions and Seesaw Neutrinos at the International Linear Collider

2010-08-13

arxiv.org/abs/1008.2257v2

Phys.Rev.D82:093004,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, 5 figures, 7 tables

Scientific paper

10.1103/PhysRevD.82.093004

We study the capability of the international linear collider (ILC) to probe extra dimensions via the seesaw mechanism. In the scenario we study, heavy Kaluza-Klein neutrinos generate tiny neutrino masses and, at the same time, have sizable couplings to the standard-model particles. Consequently, a Kaluza-Klein tower of heavy neutrinos (N) can be produced and studied at the ILC through the process: e+e- -> vN followed by N -> Wl decay. We show that the single lepton plus two-jets final states with large missing energy from this signal process will provide a good opportunity to measure the masses and cross sections of Kaluza-Klein neutrinos up to the third level. Furthermore, the neutrino oscillation parameters can be extracted from the flavor dependence of the lowest-mode signals, which give us information about the origin of low-energy neutrino masses.

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