Diffuse neutrino flux measurements with the Baikal-GVD neutrino telescope
نویسندگان
چکیده
We report on the first observation of diffuse cosmic neutrino flux with Baikal-GVD telescope. Using cascadelike events collected by in 2018–2021, a significant excess over expected atmospheric background is observed. This consistent high-energy observed IceCube. The null assumption rejected significance 3.05σ. Assuming single power law model astrophysical identical contribution from each flavor, following best-fit parameter values are found: spectral index γastro=2.58−0.33+0.27 and normalization ϕastro=3.04−1.21+1.52 per one flavor at 100 TeV.Received 25 November 2022Accepted 10 January 2023DOI:https://doi.org/10.1103/PhysRevD.107.042005© 2023 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasNuclear astrophysicsNuclear Physics
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ژورنال
عنوان ژورنال: Physical review
سال: 2023
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physrevd.107.042005