Study of pbar-p -> eta-eta-pizero-pizero in flight

Autor: Anisovich, A. V., Batty, C. A. Baker. C. J., Bugg, D. V., Nikonov, V. A., Sarantsev, A. V., Sarantsev, V. V., Zou, B. S.
Rok vydání: 2011
Předmět:
Zdroj: Phys. Lett. B 500 (2001) 222
Druh dokumentu: Working Paper
DOI: 10.1016/S0370-2693(01)00089-2
Popis: 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 strongly 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).
Comment: 12 pages, 6 figures
Databáze: arXiv