Beam spin asymmetry in the electroproduction of a pseudoscalar meson or a scalar meson off the scalar target
- North Carolina State Univ., Raleigh, NC (United States)
- Kyungpook National Univ., Daegu (Korea)
- Vrije Univ., Amsterdam (Netherlands)
In this paper, 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.
- Research Organization:
- North Carolina State University, Raleigh, NC (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); National Research Foundation of Korea (NRF)
- Grant/Contract Number:
- FG02-03ER41260; NRF-2017R1D1A1B03033129
- OSTI ID:
- 1609459
- Alternate ID(s):
- OSTI ID: 1546229
- Journal Information:
- Physical Review D, Vol. 99, Issue 11; ISSN 2470-0010
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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