J. Vandermeulen et B. Vandenbossche, SHAPE OF PION MULTIPLICITY IN ANTINEUTRON-PROTON ANNIHILATION AT VERYLOW MOMENTUM, ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI, 345(2), 1993, pp. 211-214
The relation between the amount of p-wave in antineutron-proton annihi
lation into pions at very low momenta (less-than-or-equal-to 0.3 GeV/c
) and the even or odd character of the produced pion number is underli
ned. A simple calculation of the magnitude of the effect suggests the
possible interest of measurements.