2026-06-28T10:11:44Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/72592024-09-04T18:18:20Zcom_20.500.14352_14col_20.500.14352_15

Exclusive tensor meson photoproduction Mathieu, Vincent Pilloni, A. Albaladejo, M. Bibrzycki, Ł. Celentano, A. Fernández Ramírez, César Szczepaniak, A. P. We study tensor meson photoproduction outside of the resonance region, at beam energies of a few GeVs. We build a model based on Regge theory that includes the leading vector and axial exchanges. We consider two determinations of the unknown helicity couplings and fit to the recent a 2 photoproduction data from CLAS. Both choices give a similar description of the a 2 cross section but result in different predictions for the parity asymmetries and the f 2 photoproduction cross section. We conclude that new measurements of f 2 photoproduction in the forward region are needed to pin down the correct production mechanism. We also extend our predictions to the 8.5 GeV beam energy, where current experiments are running. 2023-06-17T08:29:08Z 2023-06-17T08:29:08Z 2020-07-06 journal article 2470-0010 10.1103/PhysRevD.102.014003 https://hdl.handle.net/20.500.14352/7259 https://doi.org/10.1103/PhysRevD.102.014003 eng PID2019-106080GB-C21 2018T1/ TIC10313 https://creativecommons.org/licenses/by/3.0/es/ open access Atribución 3.0 España APS Physics