Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Atmospheric muons and neutrinos from charm   We have updated our previous investigation of the production of muons and
neutrinos in cosmic ray interactions with the atmosphere, taking account of
recent results from the $ep$ collider HERA in our QCD-based model for hadronic
interactions. Qualitatively, our previous results remain unmodified: our
predictions for the conventional muon and neutrino fluxes agree with earlier
calculations, whereas the charm particle treatment we use gives significantly
lower prompt fluxes compared to earlier estimates. This implies better
prospects for detecting very high energy neutrinos from cosmic sources.

6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys