$Ï$-meson photoproduction on Hydrogen in the neutral decay mode
arXiv:1308.1363 · doi:10.1103/PhysRevC.89.055206
Abstract
We report the first measurement of the photoproduction cross section of the $Ï$ meson in its neutral decay mode in the reaction $γp \to pÏ(K_SK_L)$. The experiment was performed with a tagged photon beam of energy $1.6 \le E_γ\le 3.6$ GeV incident on a liquid hydrogen target of the CLAS spectrometer at the Thomas Jefferson National Accelerator Facility. The $p Ï$ final state is identified via reconstruction of $K_S$ in the invariant mass of two oppositely charged pions and by requiring the missing particle in the reaction $γp \to p K_S X$ to be $K_L$. The presented results significantly enlarge the existing data on $Ï$-photoproduction. These data, combined with the data from the charged decay mode, will help to constrain different mechanisms of $Ï$ photoproduction.