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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28 February 2024
An Erratum to this paper has been published: https://doi.org/10.1007/JHEP02(2024)225
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Acknowledgments
We are grateful to D. Müller for collaborations during which most of the theoretical framework used was set up. We thank V. Braun and P. Kroll for discussions. This publication is supported by the Croatian Science Foundation project IP-2019-04-9709, by QuantiXLie Centre of Excellence through the grant KK.01.1.1.01.0004, and by the EU Horizon 2020 research and innovation program, STRONG-2020 project, under grant agreement No 824093.
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Čuić, M., Duplančić, G., Kumerički, K. et al. NLO corrections to the deeply virtual meson production revisited: impact on the extraction of generalized parton distributions. J. High Energ. Phys. 2023, 192 (2023). https://doi.org/10.1007/JHEP12(2023)192
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DOI: https://doi.org/10.1007/JHEP12(2023)192