Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Expectation on probing the origin of the cosmic ray knee with the LHAASO
  experiment   The cosmic-ray (CR) knee and the compositions contain abundant information
for probing the CR's origin, acceleration and propagation mechanisms, as well
as the frontier of the fundamental physics. Realizing that major proposals
toward the knee's shape can be divided into two categories: the
rigidity-dependent (also Z-dependent) knee and the mass-dependent (also
A-dependent) knee, where the former one relates to the acceleration or the
propagation mechanisms, and the other one is often associated with the new
physics, it is essential to precisely measure the individual compositions.
Benefit from the high altitude and hybrid detection methods, the LHAASO
experiment has the ability in determining the individual component and brings
us an opportunity in discriminating these two models. We test this expected
ability of LHAASO from 100 TeV to 10 PeV with 3-year observation. And find the
dominant component at the knee is essential to this issue, while much heavier
nuclei occupying the knee leads to higher significance. In the analysis, the
He-dominant knee under the A-dependent case can be recognized at the
significance about 6.6 $\sigma$, while the P-dominant knee under the
Z-dependent case will be classified with 2 $\sigma$ significance.

37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
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The categories of this paper are: funct-an
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The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math