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

A bstract 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 conforma...

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Bibliographic Details
Published in:The journal of high energy physics 2023-12, Vol.2023 (12), p.192-41, Article 192
Main Authors: Čuić, Marija, Duplančić, Goran, Kumerički, Krešimir, Passek-K, Kornelija
Format: Article
Language:English
Subjects:
Classical and Quantum Gravitation
Elastic scattering
Elementary Particles
High energy physics
Particle production
Parton Distributions
Partons
Phenomenology
Physics
Physics and Astronomy
Properties of Hadrons
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Quarks
Regular Article - Theoretical Physics
Relativity Theory
String Theory
Vector mesons
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Summary:A bstract 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.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP12(2023)192