pith. sign in

arxiv: 2211.09447 · v1 · pith:M7JUYSSOnew · submitted 2022-11-17 · 🌌 astro-ph.HE

Diffuse neutrino flux measurements with the Baikal-GVD neutrino telescope

Baikal Collaboration: V. A. Allakhverdyan , A. D. Avrorin , A. V. Avrorin , V. M. Aynutdinov , Z. Barda\v{c}ov\'a , I. A. Belolaptikov , I. V. Borina , N. M. Budnev
show 49 more authors
V. Y. Dik G. V. Domogatsky A. A. Doroshenko R. Dvornick\'y A. N. Dyachok Zh.-A. M. Dzhilkibaev E. Eckerov\'a T. V. Elzhov L. Fajt A. R. Gafarov K. V. Golubkov N. S. Gorshkov T. I. Gress K. G. Kebkal V. K. Kebkal A. Khatun E. V. Khramov M. M. Kolbin K. V. Konischev A. V. Korobchenko A. P. Koshechkin V. A. Kozhin M. V. Kruglov V. F. Kulepov Y. M. Malyshkin M. B. Milenin R. R. Mirgazov D. V. Naumov V. Nazari D. P. Petukhov E. N. Pliskovsky M. I. Rozanov V. D. Rushay E. V. Ryabov G. B. Safronov B. A. Shaybonov D. Seitova M. D. Shelepov F. \v{S}imkovic A. E. Sirenko A. V. Skurikhin A. G. Solovjev M. N. Sorokovikov I. \v{S}tekl A. P. Stromakov O. V. Suvorova V. A. Tabolenko Y. V. Yablokova D. N. Zaborov
This is my paper
classification 🌌 astro-ph.HE
keywords neutrinofluxbaikal-gvdcosmicdiffuseastroeventsexcess
0
0 comments X
read the original abstract

We report on the first observation of the diffuse cosmic neutrino flux with the Baikal-GVD neutrino telescope. Using cascade-like events collected by Baikal-GVD in 2018--2021, a significant excess of events over the expected atmospheric background is observed. This excess is consistent with the high-energy diffuse cosmic neutrino flux observed by IceCube. The null cosmic flux assumption is rejected with a significance of 3.05$\sigma$. Assuming a single power law model of the astrophysical neutrino flux with identical contribution from each neutrino flavor, the following best-fit parameter values are found: the spectral index $\gamma_{astro}$ = $2.58^{+0.27}_{-0.33}$ and the flux normalization $\phi_{astro}$ = 3.04$^{+1.52}_{-1.21}$ per one flavor at 100 TeV.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Forward citations

Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Lepton interactions from GeV to EeV

    hep-ph 2026-06 unverdicted novelty 3.0

    Phenomenological study predicting incomplete tau polarization at FASER2, observable neutrino and muon trident processes, and contributions to hadron structure from IceCube neutrino events.