Neutrino 2018 - XXVIII International Conference on Neutrino Physics and Astrophysics

4-9 June 2018
Heidelberg
Europe/Berlin timezone
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Contribution Poster atmospheric

Poster (not participating in poster prize competition)

Neutrinos from decays of stopped atmospheric muons in the Earth

Speakers

• Dr. Wan-Lei GUO

Primary authors

• Dr. Wan-Lei GUO (Main building A406, Institute of High Energy Physics, Chinese Academy of Sciences, P.O. Box 918, Beijing 100049, China)

Session and Location

Wednesday Session, Poster Wall #155 (Hölderlin-Room)

Abstract content

We explore the neutrinos from decays of stopped atmospheric muons in the Earth. In terms of the atmospheric muon flux at the sea-level and the average muon range $R$, we derive the depth distribution of stopped muons in the Earth. The stopped $\mu^-$ can be captured by different nuclei in the rock. Based on the mean-life of captured $\mu^-$ and the average muonic capture probabilities of different elements, we find that about 60% stopped $\mu^-$ can decay and produce the low energy neutrinos (< 53 MeV). Then we calculate the $\nu_e$, $\bar{\nu}e$, $\nu\mu$ and $\bar{\nu}_\mu$ fluxes from all stopped $\mu^+$ and $\mu^-$ in the Earth, which have about 10%, 6%, 3% and 7% of the corresponding atmospheric neutrino fluxes. The new neutrino source is very helpful for us to investigate the diffuse supernova neutrinos and some related topics.

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