Beam spin asymmetry in the electroproduction of a pseudoscalar meson or a scalar meson off the scalar target

Ji, Chueng-Ryong; Choi, Ho-Meoyng; Lundeen, Andrew; Bakker, Bernard L.  G.

doi:10.1103/physrevd.99.116008

Beam spin asymmetry in the electroproduction of a pseudoscalar meson or a scalar meson off the scalar target

Journal Article · Wed Jun 12 00:00:00 EDT 2019 · Physical Review D

DOI:https://doi.org/10.1103/physrevd.99.116008· OSTI ID:1609459

Ji, Chueng-Ryong ^[1]; Choi, Ho-Meoyng ^[2]; Lundeen, Andrew ^[3]; Bakker, Bernard L. G. ^[4]

North Carolina State Univ., Raleigh, NC (United States); DOE/OSTI
Kyungpook National Univ., Daegu (Korea)
North Carolina State Univ., Raleigh, NC (United States)
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.

View Accepted Manuscript (DOE)

Research Organization:: North Carolina State Univ., Raleigh, NC (United States)

Sponsoring Organization:: USDOE Office of Science (SC); National Research Foundation of Korea (NRF)

Grant/Contract Number:: FG02-03ER41260

OSTI ID:: 1609459

Alternate ID(s):: OSTI ID: 1546229

Journal Information:: Physical Review D, Journal Name: Physical Review D Journal Issue: 11 Vol. 99; ISSN PRVDAQ; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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