Journal article
Energy-dependent flavour ratios in neutrino telescopes from charm
Journal of cosmology and astroparticle physics, Vol.2024(3), 057
03/01/2024
DOI: 10.1088/1475-7516/2024/03/057
Abstract
The origin of the observed diffuse neutrino flux is not yet known.Studies of the relative flavour content of the neutrino flux detected at Earthcan give information on the production mechanisms at the sources and on flavourmixing, complementary to measurements of the spectral index and normalization.Here we demonstrate the effects of neutrino fluxes with different spectralshapes and different initial flavour compositions dominating at differentenergies, and we study the sensitivity of future measurements with the IceCubeNeutrino Observatory. Where one kind of flux gives way to another, this showsup as a non-trivial energy dependence in the flavour compositions. We explorethis in the context of slow-jet supernovae and magnetar-driven supernovae — twoexamples of astrophysical sources where charm production may be effective.Using current best-fit neutrino mixing parameters and the projected 2040IceCube uncertainties, we use event ratios of different event morphologies atIceCube to illustrate the possibilities of distinguishing the energy dependenceof neutrino flavour ratios.
Details
- Title: Subtitle
- Energy-dependent flavour ratios in neutrino telescopes from charm
- Creators
- Atri BhattacharyaRikard EnbergMary Hall RenoIna Sarcevic
- Resource Type
- Journal article
- Publication Details
- Journal of cosmology and astroparticle physics, Vol.2024(3), 057
- Publisher
- IOP Publishing
- DOI
- 10.1088/1475-7516/2024/03/057
- ISSN
- 1475-7516
- eISSN
- 1475-7516
- Language
- English
- Date published
- 03/01/2024
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984577111002771
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