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Testing sterile neutrino extensions of the Standard Model at the Circular Electron Positron Collider

Antusch, Stefan and Fischer, Oliver. (2015) Testing sterile neutrino extensions of the Standard Model at the Circular Electron Positron Collider. International Journal of Modern Physics. A, 30 (23). p. 1544004.

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Official URL: http://edoc.unibas.ch/39794/

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Abstract

Extending the Standard Model with sterile (“right-handed”) neutrinos is one of the best motivated ways to account for the observed neutrino masses. We discuss the expected sensitivity of the Circular Electron Positron Collider (CEPC) for testing such extensions. An interesting scenario is given by symmetry protected seesaw models, which theoretically allow for sterile neutrino masses around the electroweak scale with up to order one mixings with the active (SM) neutrinos.
When the masses of the sterile neutrinos are well above the electroweak scale, they affect precision data via effective non-unitarity of the leptonic mixing matrix in a model independent way. The expected improvement of the electroweak precision observables from the CEPC may allow to test mixings between active and sterile neutrinos down to ∼5×10−3.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik (Antusch)
UniBasel Contributors:Antusch, Stefan and Fischer, Oliver
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:World scientific
ISSN:0217-751X
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:30 Jun 2016 11:00
Deposited On:28 Apr 2016 09:55

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