Objective "Thanks to tremendous advances in terrestrial, astrophysical and cosmological experiments, neutrino physics has again become one of the driving forces of progress in astroparticle physics. The proposed project nuDirections provides the indispensable theoretical counterpart to the rapid experimental developments. Our goal is to investigate from a theoretical point of view a multitude of unexplored phenomena within and beyond the Standard Model of particle physics that are now becoming experimentally accessible in new neutrino experiments. The three main pillars of the project are: (1) Light sterile neutrinos. With hypothetical eV-scale sterile neutrinos coming under intense scrutiny by new experiments, sophisticated global fits will remain a linchpin for the theoretical interpretation of experimental data. We plan to carry out these fits using upgrades of our world-leading numerical codes, and to use our results as guidelines for exploring new theoretical models featuring sterile neutrinos as part of a larger ""hidden sector"" of particle physics. This includes in particular the unique phenomenology of self-interacting sterile neutrinos. (2) Decoherence effects in dense neutrino gases. As neutrinos propagate, coherence between different mass eigenstates is eventually lost due to their different group velocities. We will demonstrate that decoherence can completely modify neutrino oscillations in dense environments such as supernovae or the early Universe. Mapping the rich phenomenology of decoherence effects in neutrino oscillations thus has the potential to play a game-changing role in the physics of supernova neutrinos. (3) Neutrinos and dark matter. We plan to develop a new mechanism for the production of sterile neutrino dark matter in the early Universe and to play a leading role in the theory and phenomenology of neutrino signals from dark matter annihilation or decay." Fields of science natural sciencesphysical sciencestheoretical physicsparticle physicsneutrinosnatural sciencesphysical sciencesastronomyastrophysicsdark matternatural sciencesphysical sciencesastronomyphysical cosmologynatural sciencesphysical sciencesastronomystellar astronomysupernova Programme(s) H2020-EU.1.1. - EXCELLENT SCIENCE - European Research Council (ERC) Main Programme Topic(s) ERC-StG-2014 - ERC Starting Grant Call for proposal ERC-2014-STG See other projects for this call Funding Scheme ERC-STG - Starting Grant Host institution ORGANISATION EUROPEENNE POUR LA RECHERCHE NUCLEAIRE Net EU contribution € 264 475,00 Address ESPLANADE DES PARTICULES 1 PARCELLE 11482 DE MEYRIN BATIMENT CADASTRAL 1046 1211 GENEVE 23 Switzerland See on map Region Schweiz/Suisse/Svizzera Région lémanique Genève Activity type Research Organisations Links Contact the organisation Opens in new window Website Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Total cost € 264 475,00 Beneficiaries (2) Sort alphabetically Sort by Net EU contribution Expand all Collapse all ORGANISATION EUROPEENNE POUR LA RECHERCHE NUCLEAIRE Switzerland Net EU contribution € 264 475,00 Address ESPLANADE DES PARTICULES 1 PARCELLE 11482 DE MEYRIN BATIMENT CADASTRAL 1046 1211 GENEVE 23 See on map Region Schweiz/Suisse/Svizzera Région lémanique Genève Activity type Research Organisations Links Contact the organisation Opens in new window Website Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Total cost € 264 475,00 JOHANNES GUTENBERG-UNIVERSITAT MAINZ Germany Net EU contribution € 542 125,00 Address SAARSTRASSE 21 55122 Mainz See on map Region Rheinland-Pfalz Rheinhessen-Pfalz Mainz, Kreisfreie Stadt Activity type Higher or Secondary Education Establishments Links Contact the organisation Opens in new window Website Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Total cost € 542 125,00