PoS - Proceedings of Science
Volume 310 - XVII International Conference on Hadron Spectroscopy and Structure (Hadron2017) - Session 2: Spectroscopy of baryons
Photoproduction of $\pi^{-}\Delta^{++}$ and $\pi^{+}\Delta^{0}$ on the proton for the comparison of $\bar{u}u$ and $\bar{d}d$ productions
H. Kohri*  on behalf of the LEPS collaboration
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Pre-published on: February 16, 2018
Published on: March 20, 2018
Abstract
We carry out photoproduction experiments using linearly polarized photon beams with energies of 1.5-3 GeV at SPring-8/LEPS. The photoproduction of various mesons and baryons is important to understand hadron production mechanisms. We took the data for the $\gamma p$ $\rightarrow$ $\pi^{-}\Delta^{++}$ and $\gamma p$ $\rightarrow$ $\pi^{+}\Delta^{0}$ reactions at the forward $\pi$ angles of 0.7$<\cos\theta_{\pi}^{c.m.}<$1 with the same acceptance for $\pi^{-}$ and $\pi^{+}$. Precise comparison between the $\bar{u}u$ and $\bar{d}d$ productions in the final state is possible, which is expected to give important information on how hadrons are produced. Preliminary results of photon beam asymmetries, which are sensitive to reaction mechanisms, are reported.
DOI: https://doi.org/10.22323/1.310.0066
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