Helicity-flip transitions and the t-dependence of exclusive photoproduction of rho meson

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-f...

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Bibliographic Details
Published in:EPJ Web of conferences 2024, Vol.291, p.2003
Main Authors: Cisek, Anna, Schäfer, Wolfgang, Szczurek, Antoni
Format: Article
Language:English
Subjects:
Cross-sections
Gluons
Helicity
Photoproduction
Rho-mesons
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Summary: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.
ISSN:2100-014X
2101-6275
2100-014X
DOI:10.1051/epjconf/202429102003