https://doi.org/10.1051/epjconf/202429103008
Light front approach to axial meson photon transition form factors: Probing the structure of χc1 (3872)
1
Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego 152, PL-31-342 Kraków, Poland
2
University of Rzeszów, ul. Pigonia 1, PL-35-959 Rzeszów, Poland
* e-mail: wolfgang.schafer@ifj.edu.pl
** e-mail: izabela.babiarz@ifj.edu.pl
*** e-mail: antoni.szczurek@ifj.edu.pl
Published online: 16 February 2024
Abstract. We propose to study the structure of the enigmatic χc1(3872) axial vector meson through its γL*γ → χc1 (3872) transition form factor. We use our recently derived light-front wave function representation of the form factor for the lowest cc¯ Fock-state. We found that the reduced width of the state is well within the current experimental bound recently published by the Belle collaboration. This strongly suggests a crucial role of the cc¯ Fock-state in the photon-induced production. Our predictions for the Q2 dependence can be tested by future single tagged e+e− experiments, giving further insights into the short-distance structure of this meson.
© The Authors, published by EDP Sciences, 2024
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