Radiative decay of $K^{-}p$ system and photoproduction of $\Lambda (1405)$

Abstract

The properties of the $\Lambda (1405)$ resonance have been investigated from radiative decay of $K^{-}p\to Y\gamma$ and photoproduction $\gamma p\to K^{+}\Lambda (1405)$ within the framework of the isobar model. For a consistent result with recently measured branching ratios, the axial vector meson $K_1(1270)$ is taken into account. Strong and electromagnetic coupling constants of $\Lambda (1405)$ are extracted from these branching ratios and are applied to the analysis of $K^{+}\Lambda (1405)$ photoproduction. The total and differential cross sections are predicted.

Comments: 4 pages, 3 figures