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Resonances formed by pbar-p and decaying into pizero-pizero-eta for masses 1960 to 2410 MeV

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arxiv 1109.2086 v1 pith:LXQRBQNI submitted 2011-09-09 hep-ex hep-ph

A.V. Anisovich , C.A. Baker , C.J. Batty , D.V. Bugg , C.Hodd , J.Kisiel , V.A. Nikonov , A.V. Sarantsev
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V.V. Sarantsev I. Scott B.S. Zou
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classification hep-exhep-ph
keywords resonancespizero-pizero-etadecayingformedintermediatepbar-pstatesanalysis
verification ladder T0 review T1 audit T2 compute T3 formal
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Data on pbar-b annihilation in flight into pizero-pizero-eta are presented for nine beam momenta 600 to 1940 MeV/c. The strongest four intermediate states are found to be f_2(1270)-eta, a_2(1320)-pi, sigma-eta and a_0(980)-pi. Partial wave analysis is performed mainly to look for resonances formed by pbar-p and decaying into pizero-pizero-eta through these intermediate states. There is evidence for the following s-channel I = 0 resonances : two 4^{++} resonances with mass and width (M,Gamma) at (2044, 208) MeV and (2320+-30, 220+-30) MeV; three 2^{++} resonances at (2020+-50, 200+-70) MeV, (2240+-40, 170+-50) MeV and (2370+-50, 320+-50) MeV; two 3^{++} resonances at (2000+-40, 250+-40) MeV and (2280+-30, 210+-30) MeV; a 1^{++} resonance at (2340+-40, 340+-40) MeV; and two 2^{-+} resonances at (2040+-40, 190+-40) MeV and (2300+-40, 270+-40) MeV.

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