DOI: 10.1140/epjc/s2002-01059-4
Tests of CPT invariance for neutral flavored meson-antimeson mixing
G.V. Dass1 and W. Grimus21 Physics Department, Indian Institute of Technology, Powai, Mumbai 400076, India
2 Institut für Theoretische Physik, Universität Wien, Boltzmanngasse 5, 1090 Wien, Austria
(Received: 5 August 2002 / Published online: 25 October 2002 )
Abstract
We focus on two aspects of
CPT invariance in
neutral meson-antimeson (
) mixing: (1) tests of
CPT
invariance,
using only the property of "lack of vacuum regeneration",
which occurs as a part of the well-known Lee-Oehme-Yang (LOY)
theory;
(2) methods for extracting the
CPT-violating mixing parameter
through explicit calculations by fully using the LOY-type
theory.
In the latter context, we demonstrate the importance of the
C-even
state. In particular,
by measuring the time dependence of opposite-sign dilepton
events arising from decays of the
C-even and
C-odd
states,
may be disentangled from the parameters
and
characterizing violations of the
rule.
Furthermore,
these two parameters may also be determined. The same is
true if one uses like-sign dilepton events arising from only
the
C-even
state.
© Società Italiana di Fisica, Springer-Verlag 2002
