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arXiv · 1109.6433

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

A. V. Anisovich·C. A. Baker. C. J. Batty·D. V. Bugg·V. A. Nikonov·A. V. Sarantsev·V. V. Sarantsev·B. S. Zou
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Abstract

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).

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A. V. Anisovich, C. A. Baker. C. J. Batty, D. V. Bugg, V. A. Nikonov, A. V. Sarantsev, V. V. Sarantsev, B. S. Zou. 2011-09-29. Study of pbar-p -> eta-eta-pizero-pizero in flight. https://doi.org/10.1016/s0370-2693(01)00089-2

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