Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Penguin contributions to B to J/Psi P Decays   The high precision to which the standard model has been confirmed implies
that new physics effects have to be small in the observed processes. Together
with the outstanding precision expected from present and future collider
experiments this renders the evaluation of subleading SM contributions
necessary. For the "golden mode", B_d to J/Psi K, these so-called "penguin
pollution" terms can be controlled by using flavour symmetry relations. A
recent analysis is presented which yields a stronger bound on the maximal
penguin influence than previous ones and shows how the corresponding
uncertainty can be reduced with coming data.

14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org