Threshold photoproduction of <math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi>J</mi><mo>/</mo><mi mathvariant="normal">Ψ</mi></mrow></math> off light nuclei

Fangcheng He; Ismail Zahed

doi:10.1103/zcvm-8lj5

Threshold photoproduction of $J / Ψ$ off light nuclei

Fangcheng He ^1,2,* and Ismail Zahed^1,†

¹Center for Nuclear Theory, Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
²Los Alamos National Laboratory, Theoretical Division T-2, Los Alamos, New Mexico 87545, USA

^*Contact author: fangchenghe@lanl.gov
^†Contact author: ismail.zahed@stonybrook.edu

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Phys. Rev. C 112, 014303 – Published 2 July, 2025

DOI: https://doi.org/10.1103/zcvm-8lj5

Abstract

We analyze threshold photoproduction of heavy mesons off a deuteron and helium-4, using the QCD factorization method. Assuming large skewness, the production amplitude is dominated by the leading twist-2 gluonic energy-momentum tensor. We use our recent results for the gluonic gravitational form factors of light nuclei in the impulse approximation, to estimate the differential cross sections for $J / Ψ$ production off a deuteron and helium-4 at current electron facilities.

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Threshold photoproduction of $J / Ψ$ off light nuclei

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Threshold photoproduction of J/Ψ off light nuclei

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Threshold photoproduction of $J / Ψ$ off light nuclei