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Production of 3pi0 and eta 2pi0 from pi-p Collision in GAMS Experiment

Masaaki Kobayashi·Tsuneaki Tsuru·Kunio Takamatsu·Shin Ishida·Toshihiko Komada·Ayumu Wakabayashi·Muneyuki Ishida
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Abstract

The data on the pi- p --> M0 n, with M0 = pi0 pi0 pi0 or pi0 pi0 eta obtained in the GAMS experiment may be useful to study the sigma(400--700) and a_1^chi (1000), which can be taken as chiral partners of pi and rho, respectively. A preliminary analysis for 3pi0 invariant mass spectra gives a support for the assumed a_1^chi with a mass of 930 MeV and Gamma = 170 MeV.

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Masaaki Kobayashi, Tsuneaki Tsuru, Kunio Takamatsu, Shin Ishida, Toshihiko Komada, Ayumu Wakabayashi, Muneyuki Ishida. 2000-12-25. Production of 3pi0 and eta 2pi0 from pi-p Collision in GAMS Experiment. https://arxiv.org/abs/hep-ph/0012326

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