Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of the mass and width of the Ds1(2536)+ meson   The decay width and mass of the Ds1(2536)+ meson are measured via the decay
channel Ds1+ -> D*+KS0 using 385 fb^-1 of data recorded with the BABAR detector
in the vicinity of the Y(4S) resonance at the PEP-II asymmetric-energy
electron-positron collider. The result for the decay width is 0.92 +- 0.03
(stat) +- 0.04 (syst) MeV. For the mass, a value of 2535.08 +- 0.01 +- 0.15
MeV/c^2 is obtained. The mass difference between the Ds1+ and the D*+ is
measured to be 524.83 +- 0.01 +- 0.04 MeV/c^2, representing a significant
improvement compared to the current world average. The unnatural spin-parity
assignment for the Ds1+ meson is confirmed.

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The categories of this paper are: comp-gas
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
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The categories of this paper are: econ
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: q-alg
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The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
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The categories of this paper are: stat
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The categories of this paper are: atom-ph
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The categories of this paper are: eess
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The categories of this paper are: chem-ph