TY - RPRT TI - Photon PDF within the CT18 global analysis AU - Xie, Keping (ORCID:0000000342613393) AU - Hobbs, T. J. AU - Hou, Tie-Jiun AU - Schmidt, Carl AU - Yan, Mengshi AU - Yuan, C. -P. PY - 2022 DO - 10.1103/physrevd.105.054006 UR - https://www.osti.gov/biblio/1853827 ID - 1853827 ER -