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arXiv · 1109.0883

I = 0 C = +1 mesons from 1920 to 2410 MeV

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

A combined fit is presented to data on pbar-p annihilation in flight to final states eta-pizero-pizero, pizero-pizero, eta-eta, eta-etaprime and piminus-piplus. The emphasis lies in improving an earlier study of eta-pizero-pizero by fitting data at nine pbar momenta simultaneously and with parameters consistent with the two-body channels. There is evidence for all of the I=0, C=+ q-qbar states expected in this mass range. New resonances are reported with masses and widths M,Gamma as follows: JPC = 4^{-+} (2328+-38, Gamma=240+-90) MeV, 1^{++} (1971+-15, 240+-45) MeV, 0^{-+} (2285+-20, 325+-30) MeV, and 0^{-+} (2010 ^{+35}_{-60}, 270+-60) MeV. Errors on the masses and widths of other resonances are also reduced substantially. All states lie close to parallel straight line trajectories of excitation number v. mass squared.

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A. V. Anisovich, C. A. Baker, C. J. Batty, D. V. Bugg, C. Hodd, H. C. Lu, V. A. Nikonov, A. V. Sarantsev, V. V. Sarantsev, B. S. Zou. 2011-09-05. I = 0 C = +1 mesons from 1920 to 2410 MeV. https://doi.org/10.1016/s0370-2693(00)01018-2

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