Journal article
Dark neutrinos and a three-portal connection to the standard model
Physical review. D, Vol.101(11), p.1
06/01/2020
DOI: 10.1103/PhysRevD.101.115025
Abstract
We introduce a dark neutrino sector which respects a hidden U(1)' gauge symmetry, subsequently broken by the vacuum expectation value of a dark scalar. The model is a self-consistent realization of an extended hidden sector that communicates with the standard model only via the three renormalizable portals, namely, neutrino, vector and scalar mixing. The interplay between portal couplings leads to several novel signatures in heavy neutrino, dark photon, and dark scalar searches, typically characterized by multileptons plus missing energy and displaced vertices. A striking signature arises in kaon factories such as NA62, where K+ -> l(alpha)(+)nu l(beta)(+)l(beta)(-) - decays could reveal a heavy neutrino and a light dark photon resonance above backgrounds. Given the open parameter space, we also comment on recent ideas to explain outstanding experimental anomalies, and how they would fit into our proposed model. A minimal extension of the model, possibly motivated by anomaly cancellation, can accommodate a dark matter candidate strongly connected to the neutrino sector.
Details
- Title: Subtitle
- Dark neutrinos and a three-portal connection to the standard model
- Creators
- Peter Ballett - Durham UniversityMatheus Hostert - University of MinnesotaSilvia Pascoli - Durham University
- Resource Type
- Journal article
- Publication Details
- Physical review. D, Vol.101(11), p.1
- DOI
- 10.1103/PhysRevD.101.115025
- ISSN
- 2470-0010
- eISSN
- 2470-0029
- Publisher
- Amer Physical Soc
- Number of pages
- 15
- Grant note
- Royal Society; Royal Society UK Wolfson Foundation Government of Canada through NSERC; Natural Sciences and Engineering Research Council of Canada (NSERC) Province of Ontario through Ministry of Economic Development and Trade (MEDT) 617143 / European Research Council (ERC) 690575; 674896 / European Union; European Union (EU) 617143 / European Research Council under ERC; European Research Council (ERC) Conselho Nacional de Ciencia e Tecnologia (CNPq); Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ) ST/P001246/1 / STFC; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC)
- Language
- English
- Date published
- 06/01/2020
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984945917402771
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