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Linear Collider Test of a Neutrinoless Double Beta Decay Mechanism in left-right Symmetric Theories

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons30274

Barry,  James
Werner Rodejohann - ERC Starting Grant, Junior Research Groups, MPI for Nuclear Physics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons30951

Rodejohann,  Werner
Werner Rodejohann - ERC Starting Grant, Junior Research Groups, MPI for Nuclear Physics, Max Planck Society;

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Fulltext (public)

1203.3365
(Preprint), 304KB

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Citation

Barry, J., Dorame, L., & Rodejohann, W. (2012). Linear Collider Test of a Neutrinoless Double Beta Decay Mechanism in left-right Symmetric Theories. European Physical Journal C, 72: 2023, pp. 1-11. doi:10.1140/epjc/s10052-012-2023-0.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0010-0C89-2
Abstract
There are various diagrams leading to neutrinoless double beta decay in left-right symmetric theories based on the gauge group SU(2)_L x SU(2)_R. All can in principle be tested at a linear collider running in electron-electron mode. We argue that the so-called lambda-diagram is the most promising one. Taking the current limit on this diagram from double beta decay experiments, we evaluate the relevant cross section e e to W_L W_R, where W_L is the Standard Model W-boson and W_R the one from SU(2)_R. It is observable if the life-time of double beta decay and the mass of the W_R are close to current limits. Beam polarization effects and the high-energy behaviour of the cross section are also analyzed.