First Measurement of Near-Threshold and Subthreshold J/psi Photoproduction off Nuclei.
Pybus JR, Ehinger L, Kolar T, Devkota B, Sharp P, Yu B, Dalton MM, Dutta D, Gao H, Hen O, Piasetzky E, Santiesteban SN, Schmidt A, Somov A, Szumila-Vance H, Adhikari S, Asaturyan A, Austregesilo A, Ayerbe Gayoso C, Barlow J, Berdnikov VV, Bhatt HD, Bhetuwal D, Black T, Briscoe WJ, Chung G, Cole PL, Deur A, Dotel R, Egiyan H, Eugenio P, Fanelli C, Gan L, Gasparian A, Guo J, Hernandez K, Higinbotham DW, Hurck P, Jaegle I, Jones RT, Kakoyan V, Karki A, Li H, Li WB, Linera GR, Lyubovitskij V, Marukyan H, McCaughan MD, McCracken M, Mizutani K, Nguyen D, Oresic S, Ostrovidov AI, Papandreou Z, Paudel C, Peters K, Ritman J, Schick A, Schwiening J, Smith A, Somov S, Strakovsky I, Suresh K, Tarasov VV, Taylor S, Xiao T, Zhang Z, Zhou X.
Pybus JR, et al.
Phys Rev Lett. 2025 May 23;134(20):201903. doi: 10.1103/PhysRevLett.134.201903.
Phys Rev Lett. 2025.
PMID: 40479695
We report on the first measurement of J/psi photoproduction from nuclei in the photon energy range of 7 to 10.8 GeV, extending above and below the photoproduction threshold in the free proton of 8.2 GeV. The experiment used a tagged photon beam incident on deuterium, heliu …
We report on the first measurement of J/psi photoproduction from nuclei in the photon energy range of 7 to 10.8 GeV, extending above …