EMD-corrected LHC data enables a consistent CGC description of coherent and incoherent diffractive J/ψ production in γ+p and γ+Pb via Bayesian inference from combined HERA and LHC measurements.
A First Account of the Impact of Ion Electromagnetic Dissociation on Event Exclusivity in Ultraperipheral LHC Collisions
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abstract
In this Letter we explore the modelling of hadron production in electromagnetic ion dissociation (EMD) processes in high-energy ultraperipheral collisions at LHC energies. Since EMD can accompany exclusive particle production in these interactions, we demonstrate that the resulting hadrons can break the exclusivity vetos typically imposed by experiments. As two representative examples, we calculate the impact on existing LHC measurements of exclusive muon pair production ($\gamma\gamma\to\mu\mu$) and exclusive coherent $J/\psi$ production. We demonstrate that accounting for this effect resolves long-standing tensions between theoretical predictions and experimental measurements.
fields
hep-ph 2years
2026 2verdicts
UNVERDICTED 2representative citing papers
A review summarizing experimental evidence, theoretical models of nuclear shadowing, model-agnostic nuclear PDF extractions, and prospects for LHC and EIC studies.
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Revisiting the role of saturation in diffractive vector meson production
EMD-corrected LHC data enables a consistent CGC description of coherent and incoherent diffractive J/ψ production in γ+p and γ+Pb via Bayesian inference from combined HERA and LHC measurements.
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Nuclear parton distributions and nuclear shadowing
A review summarizing experimental evidence, theoretical models of nuclear shadowing, model-agnostic nuclear PDF extractions, and prospects for LHC and EIC studies.