2020/01/28 by Igor Strakovsky, Lubomir Pentchev, Alexander Titov
Physics and Astronomy · #hep-ph #hep-ex #nucl-ex #nucl-th
paper · pdf · doi:10.1103/physrevc.101.045201
published as Phys. Rev. C 101, 045201 (2020) · 5 pages, 2 figures, 1 figure added
arxiv created 2020/01/28 · arxiv updated 2020/04/22
The high accuracy ϕ-meson photoproduction data from the CLAS experiment in Hall~B of Jefferson Laboratory allow us to determine the near-threshold total cross section of the γp→ϕp reaction and use it for evaluating the ϕp scattering length αϕp. These data result in an absolute value of |αϕp| = (0.063± 0.010)~fm, which is smaller than the typical hadron size. A comparative analysis of αϕp with the previously determined scattering lengths for ωp and J/ψp from the A2 and GlueX experiments is performed.