Exploring kaon induced reactions for unraveling the nature of the scalar meson a0(1817)

In this work, we investigate the production of isovector scalar meson a(0)(1817) by the effective Lagrangian approach. Specifically, we employ the Reggeized t channel Born term to calculate the total and differential cross sections for the reaction K- p -> a(0)(1817)Lambda. Our analysis reveals that the optimal energy range for detecting the a(0)(1817) meson lies between W = 3.4 GeV and W = 3.6 GeV, where the predicted total cross section reaches a minimum value of 112 nb. Notably, the t channel, as predicted by the Regge model, significantly enhances the differential cross sections, particularly at extreme forward angles. Furthermore, we investigate the Dalitz processes of 2 -> 3 and discuss the feasibility of detecting the a(0)(1817) meson in experiments like J-PARC.

Automated summary

In this study, we investigate the production of isovector scalar meson a(0)(1817) using the effective Lagrangian approach. We calculate the total and differential cross sections for the reaction K- p -> a(0)(1817)Lambda using the Reggeized t channel Born term. Our analysis shows that the a(0)(1817) meson can be detected in the energy range between W = 3.4 GeV and W = 3.6 GeV, with a minimum predicted total cross section of 112 nb. The Regge model predicts a significant enhancement of the differential cross sections, particularly at extreme forward angles. Furthermore, we discuss the feasibility of detecting the a(0)(1817) meson in experiments like J-PARC.