Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observation of Ds1(2536)+ -> D+ pi- K+   We report the observation of the decay Ds1(2536)+ -> D+ pi- K+. We also
measure the helicity angle distributions in the decay Ds1(2536)->D*+ K0S and
thus constrain the contributions and the phase difference of D and S wave
amplitudes in this decay. The results are based on a 281 fb^-1 data sample
collected with the Belle detector near the Y(4S) resonance, at the KEKB
asymmetric energy e+e- collider.

22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol