Extra dimensions and seesaw neutrinos at the International Linear Collider

Tomoyuki Saito, Masaki Asano, Keisuke Fujii, Naoyuki Haba, Shigeki Matsumoto, Takehiro Nabeshima, Yosuke Takubo, Hitoshi Yamamoto, Koichi Yoshioka

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


We study the capability of the International Linear Collider 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 International Linear Collider through the process: e+e-→νN 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.

Original languageEnglish
Article number093004
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number9
Publication statusPublished - 2010 Nov 5

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)


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