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arXiv · 2310.13837

NLO corrections to the deeply virtual meson production revisited: impact on the extraction of generalized parton distributions

Marija Čuić·Goran Duplančić·Krešimir Kumerički·Kornelija Passek-K.
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Abstract

We revisit the next-to-leading order (NLO) perturbative QCD corrections for the deeply virtual meson production (DVMP) process, exploring its phenomenology both in isolation and in a multichannel fit combined with deeply virtual Compton scattering (DVCS). Our approach involves the conformal partial wave (CPaW) formalism, which allows for the straightforward inclusion of higher-order contributions and evolutionary effects. Our findings indicate that a description of the longitudinal component of the vector meson DVMP cross-section at high energies is achievable only at NLO within the standard collinear approach. Furthermore, we demonstrate a simultaneous description of DIS, DVCS, and DVMP processes, providing insights into the proton structure described at NLO by unique universal generalized parton distribution (GPD) functions.

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Marija Čuić, Goran Duplančić, Krešimir Kumerički, Kornelija Passek-K.. 2023-10-20. NLO corrections to the deeply virtual meson production revisited: impact on the extraction of generalized parton distributions. https://doi.org/10.1007/jhep12(2023)192%2010.1007%2Fjhep02(2024)225

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