We investigate effects of spontaneous breakdown of CP in
Bd,s0−B0d,s systems in left-right symmetric models.
Assuming that the left-right contribution to the B0−B0 matrix
element M12 can be at most equal to the standard model one we obtain a new
lower bound, M_H\gsim 12 TeV, on the flavour changing Higgs boson mass. Most
importantly, the convention independent parameter Re(ϵB),
which measures the amount of ΔB=2 CP violation, can be enhanced by a
factor of four or more for Bd0 and almost by two orders of magnitude for
Bs0 systems when compared with the Standard Model predictions. Therefore,
interesting possibilities to observe indirect CP violation in the B system
are open in the planned facilities.Comment: 19 pages, LATEX, 4 postscript figures include