arXiv:hep-ph/0012326·v1·High Energy Physics — Phenomenology
Production of 3pi0 and eta 2pi0 from pi-p Collision in GAMS Experiment
Masaaki Kobayashi (KEK)🇯🇵 · Tsuneaki Tsuru (KEK)🇯🇵 · Kunio Takamatsu (CROSS)🇯🇵 · Shin Ishida (Nihon U.)🇯🇵 · Toshihiko Komada (Nihon U.)🇯🇵 · Ayumu Wakabayashi (Nihon U.)🇯🇵 · Muneyuki Ishida (TITech)🇯🇵
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.
Comments: proc. of ``Possible Existence of sigma-Meson and Its Implication to Hadron Physics," YITP, Kyoto, June 12--14, 2000. 6 pages, uses ptptex.sty