New Crystal Barrel data are reported for pbar-p -> omega-eta and pbar-p -> omega-pizero-pizero with omega decaying to piplus-piminus-pizero. The omega-eta data confirm angular distributions obtained earlier from data where omega -> pizero-gamma. The new omega-eta data provide accurate measurements of vector and tensor polarisations of the omega and lead to considerable improvements in masses and widths of s-channel resonances. A new J^PC = 3^+- I = 0 resonance is observed with mass M = 2025+-20 MeV and width Gamma = 145+-30 MeV. Polarisation is close to zero everywhere and tensor polarisations are large, as is the case also for pbar-p -> omega-pizero.
@article{arxiv.1109.5817,
title = {I=0, C=-1 mesons from 1940 to 2410 MeV},
author = {A. V. Anisovich and C. A. Baker and C. J. Batty and D. V. Bugg and L. Montanet and V. A. Nikonov and A. V. Sarantsev and V. V. Sarantsev and B. S. Zou},
journal= {arXiv preprint arXiv:1109.5817},
year = {2011}
}
Comments
Makes available the final combined analysis of these quantum numbers. 12 pages, 7 figures