Speaker
Yongwoo Choi
(Korea University, Inha University)
Description
We discuss the deeply virtual meson production in the (1+1)-dimensional scalar field model. To describe the scattering process, two approaches, the one-loop approximation and the leading twist of the scalar loop, are considered for the scalar meson production off the charged scalar target, e.g., $\gamma^{*} + {}^{4}{\rm He} \to f_{0}(980) + {}^{4}{\rm He}$. We particularly focus on the significance of the cat’s ears contribution and the discrepancy of the Compton form factors obtained from two approaches in JLab kinematic regions. It will provide a criterion for how much higher twist contributions are required for hard exclusive processes in specific kinematic regions.
Primary author
Yongwoo Choi
(Korea University, Inha University)
Co-authors
Ho-Meoyng Choi
(Kyungpook National University)
Chueng-Ryong Ji
(North Carolina State University)
Yongseok Oh
(Kyungpook National University)
