Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: B Physics: CP Violation Beyond the SM   We analyse the present experimental evidence for a complex CKM matrix, even
allowing for New Physics contributions to $\epsilon_{K}$, $a_{J/\Psi K_{S}}$%,
$\Delta M_{B_{d}}$, $\Delta M_{B_{s}}$, and the $\Delta I=1/2$ piece of $% B\to
\rho \rho $ and $B\to \rho \pi $. We emphasize the crucial r\^{o}le played by
the angle $\gamma $ in both providing irrefutable evidence for a 3$\times $3
complex CKM matrix and placing constraints on the size of NP contributions. It
is shown that even if one allows for New Physics a real CKM matrix is excluded
at a 99.92% C.L., and the probability for the phase $\gamma $ to be in the
interval $[-170^{\circ};-10^{\circ}]\cup \lbrack 10^{\circ};170^{\circ}]$ is
99.7%. Large value of the phase $\chi $, e.g. of order $\lambda $, is only
possible in models where the unitarity of the $3\times 3$
Cabibbo-Kobayashi-Maskawa matrix is violated through the introduction of extra
$Q=2/3$ quarks. We study the allowed range for $\chi $ and the effect of a
large $\chi $ on various low-energy observables, such as CP asymmetries in $B$
meson decays. We also discuss the correlated effects which would be observable
at high energy colliders, like decays $t\to cZ$, etc..

29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
2
The categories of this paper are: math
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys