Preliminary Results on Polarization Observables for Double-Pion Photoproduction from FROST

Hadron spectroscopy is essential to understand nucleon structure in the low energy regime. Many low mass resonances have been observed via $\pi N$ scattering but only a few resonances above 1.7 GeV have been seen so far. It is speculated that photoproduction could be the key to detect the {\it missing} resonances, many of which probably decay into multi-particle final states. Double-pion photoproduction with $p\pi^{+}\pi^{-}$ final state becomes the biggest contributor to the total cross section for center-of-mass energies above 1.7 GeV, making it an indispensable channel to explore. It is imperative to measure polarization observables to isolate the resonant and non-resonant contributions to this reaction for the extraction of $N^{*}$ parameters. Here we report on the preliminary results obtained for polarization observables $I^{\odot}$, $P_{z}$, $P_{z}^{\odot}$ from the study of $\pi^{+}\pi^{-}$ photoproduction using circularly polarized photons ($E_{\gamma}$ up to 2.3 GeV) incident on a longitudinally polarized butanol target and discuss the ongoing analysis to extract $P_{x}^{s,c}$, $P_{y}^{s,c}$ using linearly polarized photons (coherent edge up to 2.1 GeV) and a transversely polarized target. The experiments were conducted at Jefferson Lab using the CLAS spectrometer.