Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Methods of Determination of the Energy and Mass of Primary Cosmic Ray
  Particles at Extensive Air Shower Energies   Measurements of cosmic ray particles at energies above E = 5 x 10^{14} eV are
performed by large area ground based air shower experiments. Only they provide
the collection power required for obtaining sufficient statistics at the low
flux levels involved. In this review we briefly outline the physics and
astrophysics interests of such measurements and discuss in more detail various
experimental techniques applied for reconstructing the energy and mass of the
primary particles. These include surface arrays of particle detectors as well
as observations of Cherenkov- and of fluorescence light. A large variety of air
shower observables is then reconstructed from such data and used to infer the
properties of the primary particles via comparisons to air shower simulations.
Advantages, limitations, and systematic uncertainties of different approaches
will be critically discussed.

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The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
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The categories of this paper are: dg-ga
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The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
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The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio