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Gottfried-Jackson polarization filters for holographic dilaton and transverse-traceless gluon responses in near-threshold J/ψ photoproduction

  • Arkadiy I. Syamtomov
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Abstract

Within the Hatta-Yang holographic graviton-dilaton amplitude for near-threshold J/ψ photoproduction, we identify exact dilaton-null spin-projection channels in the Gottfried--Jackson basis. The m=0 and m=−λγ amplitudes receive no dilaton contribution; for photon polarization normal to the reaction plane the m=0 channel further isolates Ag(t)+Bg(t) and requires nucleon spin transfer. Standard beam-polarization spin-density-matrix elements then furnish a TT-sensitive combination and a second bilinear containing linear dilaton-TT interference. Comparison with modern GlueX and CLAS12 cross sections shows substantial sensitivity to the shape of the original holographic parameterization. The polarization observables therefore provide direct probes of the tensor structure of the production amplitude.

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Cite

BibTeXRIS
BibTeX
@misc{syamtomov2026gottfriedjackson,
  title = {{Gottfried-Jackson polarization filters for holographic dilaton and transverse-traceless gluon responses in near-threshold $J/ψ$ photoproduction}},
  author = {Arkadiy I. Syamtomov},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2609.33908},
  eprint = {2609.33908},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.33908},
}
RIS
TY  - UNPB
TI  - Gottfried-Jackson polarization filters for holographic dilaton and transverse-traceless gluon responses in near-threshold J/ψ photoproduction
AU  - Arkadiy I. Syamtomov
PY  - 2026
DA  - 2026/10/11
PB  - arXiv
DO  - 10.48550/arxiv.2609.33908
UR  - https://arxiv.org/abs/2609.33908
AB  - Within the Hatta-Yang holographic graviton-dilaton amplitude for near-threshold J/ψ photoproduction, we identify exact dilaton-null spin-projection channels in the Gottfried--Jackson basis. The m=0 and m=−λ_γ amplitudes receive no dilaton contribution; for photon polarization normal to the reaction plane the m=0 channel further isolates A_g(t)+B_g(t) and requires nucleon spin transfer. Standard beam-polarization spin-density-matrix elements then furnish a TT-sensitive combination and a second bilinear containing linear dilaton-TT interference. Comparison with modern GlueX and CLAS12 cross sections shows substantial sensitivity to the shape of the original holographic parameterization. The polarization observables therefore provide direct probes of the tensor structure of the production amplitude.
ER  -