Search for Sub-threshold Photoproduction of J/Psi Mesons

Abstract

A search was made for sub-threshold $J/\psi$ production from a carbon target using a mixed real and quasi-real Bremsstrahlung photon beam with an endpoint energy of 5.76 GeV. No events were observed, which is consistent with predictions assuming quasi-free production. The results place limits on exotic mechanisms that strongly enhance quasi-free production.

19 pages, 7 figures, to be submitted to Phys. Rev. C

References in corpus (9)

• Probing Cold Dense Nuclear Matter
• Measurement of 2- and 3-Nucleon Short Range Correlation Probabilities in Nuclei
• Investigation of Proton-Proton Short-Range Correlations via the 12C(e,e'pp) Reaction
• Observation of Nuclear Scaling in the $A(e,e^{\prime })$ Reaction at $x_B>$1
• Photoproduction of charm near threshold
• Two-gluon form factor of the nucleon and $J/\psi$ photoproduction
• Physics at ELFE
• On the behaviour of the nuclear spectral function at high momentum and removal energy
• Subthreshold photoproduction of charm

Cited by in corpus (6)

• A QCD analysis of near-threshold quarkonium leptoproduction at large photon virtualities
• Sub-threshold $J/\psi$ and ${\rm Y}$ Production in $\gamma A$ Collisions
• Gluonic Probe for the Short Range Correlation in Nucleus
• Exclusive J/Psi electroproduction in a dual model
• First Measurement of Near- and Sub-Threshold $J/\psi$ Photoproduction off Nuclei
• Subthreshold production of $J/\psi$ mesons from the deuteron with SoLID