Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The convolution model of unstable particles   Quantum field model of unstable particles with random mass is suggested to
describe the finite-width effects in decay rate. Within the framework of this
model we derive the convolution formula for a width of the channels with
unstable particle in a final state. The distribution function of random mass is
considered for ustable particles of arbitrary type

14
The categories of this paper are: math-ph
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs