Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: b to d d s bar transition and constraints on new physics in B^- decays   The b to d d s bar transition gives extremely small branching ratios within
the standard model, thus providing an appropriate ground for testing new
physics. Using renormalization group technique we determine the Wilson
coefficients and the mixing of the operators which contribute to the b to d d s
bar transition. We consider contributions to this decay mode from the
supersymmetric standard model with and without R-parity, as well as from a
model with an additional neutral Z' gauge boson. Using Belle and BaBar upper
bounds for the B^- to pi^- pi^- K^+ branching ratio we constrain contributions
of these new physics scenarios. Then we calculate branching ratios for two- and
three-body nonleptonic B^- meson decays driven by the b to d d s transition,
which might be experimentally accessible.

37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex