TY - RPRT TI - Gluon Sivers function from forward exclusive χ c 1 photoproduction on unpolarized protons AU - Benić, Sanjin AU - Dumitru, Adrian (ORCID:0000000208072346) AU - Motyka, Leszek (ORCID:0000000225371786) AU - Stebel, Tomasz (ORCID:0000000206968739) PY - 2025 DO - 10.1103/physrevd.111.054008 UR - https://www.osti.gov/biblio/2530437 ID - 2530437 ER -