Eur. Phys. J. A 11, 341-344 (2001)
Study of N*(1440) from decaysB.S. Zou1, 2, 3, 4, G.X. Peng1, 2, R.G. Ping2, H.C. Chiang1, 2, 3, 4, W.X. Ma1, 2 and P.N. Shen1, 2, 3, 4
1 CCAST (World Lab.), P.O. Box 8730, Beijing 100080, PRC
2 Institute of High Energy Physics, Chinese Academy of Sciences, P.O. Box 918(4), Beijing 100039, PRC
3 Institute of Theoretical Physics, Chinese Academy of Sciences, P.O. Box 2735, Beijing 100080, PRC
4 Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, PRC
(Received: 1 June 2001 Communicated by V.V. Anisovich)
For and , the and systems are limited to be pure isospin-(1/2) due to isospin conservation. This is a big advantage in studying N* resonances from decays, compared with and experiments. The process or provides a new way to probe the internal structure of the N* resonances. Here we report a quark model calculation for , and . The implication for the internal structure of N*(1440) is discussed.
14.20.Gk - Baryon resonances with S=0 .
13.25.Gv - Decays of , , and other quarkonia.
13.65.+i - Hadron production by electron-positron collisions.
© Società Italiana di Fisica, Springer-Verlag 2001