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Testing the see-saw mechanism at collider energies

Testing the see-saw mechanism at collider energies
Testing the see-saw mechanism at collider energies
We propose a low energy extension of the Standard Model consisting of an additional gauged U(1)B-L plus three right-handed neutrinos. Although the lightest right-handed neutrinos have TeV scale masses and may be produced at colliders via their couplings to the ZB-L gauge boson, constraints from the out-of-equilibrium condition lead to stringent upper bounds on the right-handed neutrino production cross-sections at colliders. However we find that the mass of the ZB-L gauge boson may be sufficiently light to be discovered at collider energies, providing an indirect test of the see-saw mechanism. We propose a brane-world scenario which motivates such TeV mass right-handed neutrinos. Our analysis opens up the possibility that the mechanism responsible for neutrino mass is testable at colliders such as the LHC or VLHC.
0033-068X
1035-1043
King, S.F.
f8c616b7-0336-4046-a943-700af83a1538
Yanagida, T.
80d848d1-a78d-412a-8cd4-5b9b4466e58c
King, S.F.
f8c616b7-0336-4046-a943-700af83a1538
Yanagida, T.
80d848d1-a78d-412a-8cd4-5b9b4466e58c

King, S.F. and Yanagida, T. (2006) Testing the see-saw mechanism at collider energies. Progress in Theoretical Physics, 114 (5), 1035-1043. (doi:10.1143/PTP.114.1035).

Record type: Article

Abstract

We propose a low energy extension of the Standard Model consisting of an additional gauged U(1)B-L plus three right-handed neutrinos. Although the lightest right-handed neutrinos have TeV scale masses and may be produced at colliders via their couplings to the ZB-L gauge boson, constraints from the out-of-equilibrium condition lead to stringent upper bounds on the right-handed neutrino production cross-sections at colliders. However we find that the mass of the ZB-L gauge boson may be sufficiently light to be discovered at collider energies, providing an indirect test of the see-saw mechanism. We propose a brane-world scenario which motivates such TeV mass right-handed neutrinos. Our analysis opens up the possibility that the mechanism responsible for neutrino mass is testable at colliders such as the LHC or VLHC.

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More information

Submitted date: 10 June 2005
Published date: 2006

Identifiers

Local EPrints ID: 57396
URI: http://eprints.soton.ac.uk/id/eprint/57396
ISSN: 0033-068X
PURE UUID: e63f2bd8-a1d1-4332-85e7-89ae572f5fdf

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Date deposited: 14 Aug 2008
Last modified: 13 Mar 2019 20:34

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