Appropriate observables for investigating narrow resonances in kaon photoproduction off a proton

Abstract

The existence of non-strange partner of pentaquark, the J^p = 1/2^+ narrow resonance, has been investigated by utilizing kaon photoproduction off a proton. It is found that the corresponding mass is 1650 MeV and the appropriate observables for investigating this resonance are the recoiled hyperon polarization, the beam-recoil double polarization C_x, and differential cross section at backward angles. Future kaon photoproduction experiments at low energies should focus on these observables.

Comments: 4 pages, prepared for the International Conference on Physics and its Application, ICPAP2011, Bandung Institute of Technology, Nov. 2011, Bandung, Indonesia. To be published in the AIP Conference Proceedings