Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Looking for the Unexpected: Direct CP Violation in B -> X_s gamma Decays   The observation of a sizable direct CP asymmetry in the inclusive decays B ->
X_s gamma would be a clean signal of New Physics. In the Standard Model, this
asymmetry is below 1% in magnitude. In extensions of the Standard Model with
new CP-violating couplings, large asymmetries are possible without conflicting
with the experimental value of the B -> X_s gamma branching ratio. In
particular, large asymmetries arise naturally in models with enhanced
chromo-magnetic dipole transitions. Some generic examples of such models are
explored and their implications for the semileptonic branching ratio and charm
yield in B decays discussed.

16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas