Speakers
Description
Coherent electro-production of $J/\psi$ on $^4$He offers a unique opportunity to explore the gluonic component of its matter distribution directly. The gluonic matter form factor of $^4$He can be experimentally accessed by performing a measurement of the reaction $^4 He(e, e' ^4He)J/\psi$ where the $J/\psi$ is reconstructed via missing mass. Such measurement requires the coincidence detection of both scattered electrons and recoiling nuclei, and novel tagging detectors will be needed to reconstruct the recoiling $^4$He momentum starting at low kinetic energies. The measured differential cross sections over a wide range of $t$ will answer critical questions regarding the gluonic structure of $^4$He: Will gluonic matter clump identically and form a similar diffractive structure in the matter form factor? Will the gluonic matter have diffractive minima as it charge form factor at the same values of Q2, if any at all? In this talk, we will discuss the possible future experiments with a fixed target as well as similar studies at EIC.
| Submitted on behalf of a Collaboration? | No |
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