Sub-threshold J/ψ and ϒ production in γA collisions

Yoshitaka Hatta, Mark Strikman, Ji Xu, Feng Yuan

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12 Scopus citations


We study sub-threshold heavy quarkonium (J/ψ and ϒ) photo-productions in γA collisions as an independent test of the universality of the nucleon-nucleon short range correlation (SRC) in nuclear scattering processes. Just below the γp threshold, the cross section is dominated by the mean field contribution of nucleons inside the nucleus. The SRC contributions start to dominate at lower photon energies, depending on the fraction of the SRC pairs in the target nucleus. We give an estimate of the cross sections in the sub-threshold region both for J/ψ and ϒ. This may be helpful for future measurements at JLab as well as at the Electron-Ion Collider in the U.S., and especially in China.

Original languageEnglish (US)
Article number135321
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
StatePublished - Apr 10 2020

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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