Abstract
The reaction is a very good isospin filter for studying resonance decaying to . Within the effective Lagrangian method, we investigate the (spin parity hadronic production in the and reactions. For the reaction, in addition to the “background” contributions from -channel exchange and -channel and exchange, we also consider the contribution from the -channel resonance, which has significant coupling to the channel. We show that the inclusion of the resonance leads to a fairly good description of the low-energy experimental total cross section data of reaction. Basing on the study of the reaction and with the assumption that the excitation of resonance dominates the reaction, we calculate the total and differential cross sections of the reaction. It is shown that the new experimental data support the important role played by the resonance with a mass in the region of 1940 MeV and a width of around 200 MeV. We also demonstrate that the invariant mass distribution and the Dalitz plot provide direct information of the production, which can be tested by future experiments.
- Received 21 May 2014
- Revised 17 July 2014
DOI:https://doi.org/10.1103/PhysRevC.90.025207
©2014 American Physical Society