Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nuclear stopping and rapidity loss in Au+Au collisions at
  sqrt{s_{NN}}=62.4 GeV   Transverse momentum spectra of protons and anti-protons measured in the
rapidity range 0<y<3.1 from 0-10% central Au+Au collisions at sqrt{s_{NN}}=62.4
GeV are presented. The rapidity densities, dN/dy, of protons, anti-protons and
net-protons N()p-N(pbar) have been deduced from the spectra over a rapidity
range wide enough to observe the expected maximum net-baryon density. From
mid-rapidity to y=1 the net-proton yield is roughly constant (dN/dy ~ 10),but
rises to dN/dy ~25 at 2.3<y<3.1. The mean rapidity loss is 2.01 +-0.16 units
from beam rapidity. The measured rapidity distributions are compared to model
predictions. Systematics of net-baryon distributions and rapidity loss vs.
collision energy are discussed.

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The categories of this paper are: q-bio
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The categories of this paper are: funct-an
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The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-ph
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The categories of this paper are: econ
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The categories of this paper are: math
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The categories of this paper are: hep-lat
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The categories of this paper are: supr-con
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The categories of this paper are: stat
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The categories of this paper are: chao-dyn
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The categories of this paper are: adap-org
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The categories of this paper are: alg-geom
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The categories of this paper are: math-ph