Earlier comparisons of galatic rotation curves with MOND have arrived at the conclusion that the parameter a_0 lies within ~20% of cH_0/2pi, where c is the velocity of light and H_0 is the Hubble constant. It is proposed here that, for this value of
H_0, signals propagating around the periphery of the Universe are phase locked by the graviton-nucleon interaction.
An analysis of data on pbar-p -> eta-eta-pizero-pizero is presented at pbar beam momenta 600 to 1940 MeV/c. There is evidence for an I = 1, J^PC = 2^-+ resonance in eta-eta-pizero with mass M = 1880 +- 20 MeV and width 255 +- 45 MeV, decaying strongl
y a2(1320)-eta; it is too strong to be explained as the high mass tail of pi_2(1670) -> a2(1320)-eta. There is tentative evidence also for weak decays to f_0(1500)pi. It makes a natural partner to the eta 2(1860).
The latest $pi N$ elastic scattering data are re-analysed to determine the coupling constant $g_c$ of the charged pion, using the dispersion relation for the invariant amplitude $B^{(+)}$. Depending on the choice of data-base, values $g^2_c/4pi = 13.
80$ to 13.65 are obtained with errors of $pm 0.12$. We re-examine the well known discrepancy with the Goldberger-Treiman relation. After allowing for the mass dependence of the pion decay constant $f_pi$, a (2-3)% discrepancy is predicted, hence $g^2_c/4pi = 13.74 pm 0.10$ in the prior case. The mass difference between charge states of $Delta (1232)$ is $M^0 -M^{++} = 2.0 pm 0.4$ MeV, close to twice the mass difference between neutron and proton. The difference in widths on resonance is $Gamma ^0 - Gamma ^{++} =3.8 pm 1.0$ MeV. One may account for a width difference of 4.5 MeV from phase space for decays and the extra channel $Delta ^0 to gamma n$.
