| Issue |
EPJ Web Conf.
Volume 291, 2024
MESON 2023 – 17th International Workshop on Meson Physics
|
|
|---|---|---|
| Article Number | 02003 | |
| Number of page(s) | 4 | |
| Section | Light Mesons and Baryons | |
| DOI | https://doi.org/10.1051/epjconf/202429102003 | |
| Published online | 16 February 2024 | |
https://doi.org/10.1051/epjconf/202429102003
Helicity-flip transitions and the t-dependence of exclusive photoproduction of rho meson
1
College of Natural Sciences, Institute of Physics, University of Rzeszów, ul. Pigonia 1, PL-35-310 Rzeszów, Poland
2
Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego 152, PL-31-342 Kraków, Poland
* e-mail: acisek@ur.edu.pl
** e-mail: Wolfgang.Schafer@ifj.edu.pl
*** e-mail: Antoni.Szczurek@ifj.edu.pl
Published online: 16 February 2024
We calculate the differential cross section dσ/dt for the diffractive photoproduction process γp → ρp and compare our results with experimental data. Our model is based on two-gluon exchange in the nonperturbative domain. We take into account both helicity conserving and often neglected helicity-flip amplitudes in the γ → V transition, which can contribute at finite t. The shape of the differential cross section as well as the role of helicity-flip processes is strongly related to the dependence of the unintegrated gluon distribution on transverse momenta in the nonperturbative region.
© The Authors, published by EDP Sciences, 2024
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