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arXiv · 2001.08851

Comparative analysis of $ωp$, $ϕp$, and $J/ψp$ scattering lengths from A2, CLAS, and GlueX threshold measurements

Igor Strakovsky·Lubomir Pentchev·Alexander Titov
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Abstract

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 $γp\toϕp$ reaction and use it for evaluating the $ϕp$ scattering length $α_{ϕp}$. These data result in an absolute value of $|α_{ϕp}| = (0.063\pm 0.010)$~fm, which is smaller than the typical hadron size. A comparative analysis of $α_{ϕp}$ with the previously determined scattering lengths for $ωp$ and $J/ψp$ from the A2 and GlueX experiments is performed.

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Igor Strakovsky, Lubomir Pentchev, Alexander Titov. 2020-01-28. Comparative analysis of $ωp$, $ϕp$, and $J/ψp$ scattering lengths from A2, CLAS, and GlueX threshold measurements. https://doi.org/10.1103/physrevc.101.045201

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