Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evidence for an Anti-charmed Baryon State   We report on the observation of a narrow resonance in D^{*-}p and D^{*+} pbar
invariant mass combinations in deep-inelastic ep scattering at centre-of-mass
energies of 300 and 320 GeV at HERA. The mass of the resonance is measured to
be 3099 +- 3 (stat.) +- 5 (syst.) MeV, the Gaussian width of 12 +- 3 (stat.)
MeV is compatible with the experimental resolution. The state can be
interpreted as an anti-charmed baryon with minimal constituent quark
composition $uudd\bar c$, together with the charge conjugate.

31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
19
The categories of this paper are: eess
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
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The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th