Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Connecting B_d and B_s decays through QCD factorisation and flavour
  symmetries   We analyse B_{d,s} -> K(*)0 K(*)0 modes within the SM, relating them in a
controlled way through SU(3)-flavour symmetry and QCD-improved factorisation.
We propose a set of sum rules for such penguin-mediated decays to constrain
some CKM angles. We determine B_s -> KK branching ratios and CP-asymmetries as
functions of A_{dir}(B_d -> K0 \bar{K}0). Applying the same techniques to
B_{d,s}-> K*0 \bar{K}*0, we outline strategies to determine the B_s mixing
angle.

26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
4
The categories of this paper are: cond-mat
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph