  Planning and interpretation of the experiments searching for the time
reversal (T) and parity (P) violation in neutron reactions require values of
the matrix elements of the T,P-violating nuclear forces between nuclear
compound states. We calculate the root mean square values and the ratio of the
matrix elements of the T,P-violating and P-violating interactions using
statistical theory based on the properties of chaotic compound states and
present the results in terms of the fundamental parameters in four different
forms: in terms of the constants of the contact nuclear interaction, meson
exchange constants, QCD theta-term and quark chromo-EDMs. Using current limits
on these parameters, we obtain the upper bounds on the ratio of the matrix
elements.
