Abstract
We discuss the electroproduction of a pseudoscalar (0-+) meson or a scalar (0++) meson off the scalar target. The most general formulation of the differential cross section for the 0-+ or 0++ meson process involves only one or two hadronic form factors, respectively, on a scalar target. The Rosenbluth-type separation of the differential cross section provides the explicit relation between the hadronic form factors and the different parts of the differential cross section in a completely model-independent manner. The absence of the beam spin asymmetry for the pseudoscalar meson production provides a benchmark for the experimental data analysis. The measurement of the beam spin asymmetry for the scalar meson production may also provide a unique opportunity not only to explore the imaginary part of the hadronic amplitude in the general formulation but also to examine the significance of the chiral-odd generalized parton distribution (GPD) contribution in the leading-twist GPD formulation.
| Original language | English |
|---|---|
| Article number | 116008 |
| Pages (from-to) | 1-7 |
| Number of pages | 7 |
| Journal | Physical Review D |
| Volume | 99 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 12 Jun 2019 |
