Seesaw mechanism at electron-electron colliders

Takehiko Asaka and Takanao Tsuyuki
Phys. Rev. D 92, 094012 – Published 6 November 2015

Abstract

We consider the Standard Model with right-handed neutrinos to explain the masses of active neutrinos by the seesaw mechanism. Since active neutrinos as well as heavy neutral leptons are Majorana fermions in this case, the lepton number violating process can be induced. We discuss the inverse neutrinoless double beta decay eeWW in the framework of the seesaw mechanism and its detectability at future colliders. It is shown that the cross section can be 17 fb for s=3TeV even with the stringent constraint from the neutrinoless double beta decays if three (or more) right-handed neutrinos exist. In such a case, the future ee colliders can test lepton number violation mediated by a right-handed neutrino lighter than about 10 TeV.

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  • Received 9 September 2015

DOI:https://doi.org/10.1103/PhysRevD.92.094012

© 2015 American Physical Society

Authors & Affiliations

Takehiko Asaka*

  • Department of Physics, Niigata University, 950-2181 Niigata, Japan

Takanao Tsuyuki

  • Graduate School of Science and Technology, Niigata University, 950-2181 Niigata, Japan

  • *asaka@muse.sc.niigata-u.ac.jp
  • tsuyuki@muse.sc.niigata-u.ac.jp

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Issue

Vol. 92, Iss. 9 — 1 November 2015

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