Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constraints on flavor-changing Z' models by B_s mixing, Z' production,
  and B_s -> \mu^+ \mu^-   Certain string-inspired Z' models have non-universal interactions to three
families of fermions and induced tree-level flavor-changing couplings. We use
recent results on B_s-anti-B_s mixing to constrain the size of the
flavor-changing couplings in the b-s sector. In some highly predictive Z'
models, such a constraint on b-s coupling can be translated into the
flavor-diagonal couplings. Based on the Z' production limits at the Tevatron,
we obtain the limit on the leptonic couplings of Z' and then make predictions
for B_s -> \mu^+ \mu^- branching ratios. We conclude that with the present
constraints from B_s mixing and Z' production, the muonic decay of $B_s$ may
not be observed at the Tevatron if the projected integrated luminosity is less
than O(5-10) fb.

14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics