Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: CP violation with two generations and pseudoscalar mesons revisited   After developing in ref.[1] a SU(2)left x U(1) gauge theory for J=0 mesons, I
show in the case of two generations that: - the electroweak mass eigenstates
differ, especially in the K and D sector, from what they are assumed to be on
the basis of a classification by the SU(4) group of flavour; - a new mechanism
for CP violation springs out, different from that of the standard model for
quarks which requires at least three generations, and I construct a SU(2)left x
U(1) gauge invariant Lagrangian which is not invariant by CP.

15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci