Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Exploring the Weak Phase gamma in B^+- -> pi K Decays   Measurements of the rates for the hadronic decays B^+- -> pi K along with the
CP-averaged B^+- -> pi^+- pi^0 branching ratio can be used to bound and extract
the weak phase gamma=-arg(V_ub). Using preliminary CLEO data, we obtain the
bounds |gamma|>93 degrees at 1 sigma, and |gamma|>71 degrees at 90 % confidence
level.

27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs