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

Scientific paper - Original scientific paper

• Author: Marija Čuić
• Author: Goran Duplančić
• Author: Krešimir Kumerički
• Author: Kornelija Passek-Kumerički
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

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.

• Keywords (english): QCD Phenomenology; Parton Distributions; Properties of Hadrons
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Journal of High Energy Physics
• Numbering: vol. 2023, no. 12, 192
• e-ISSN: 1029-8479
• DOI: https://doi.org/10.1007/JHEP12(2023)192
• URN:NBN: urn:nbn:hr:217:157628
• Publication: 2023-12-28
• Project: Number: IP-2019-04-9709; Title (croatian): Razotkrivanje strukture hadrona pomoću tvrdih ekskluzivnih procesa; Title (english): Revealing the hadron structure through hard exclusive processes; Acronym: REVESTRUCTURE; Leader: Kornelija Passek; Jurisdiction: Croatia; Funding stream: Research Projects
• Project: Number: KK.01.1.1.01.0004; Title (croatian): Provedba vrhunskih istraživanja u sklopu Znanstvenog centra izvrsnosti za kvantne i kompleksne sustave te reprezentacije Liejevih algebri; Title (english): Implementation of top research within the Scientific Center of Excellence for Quantum and Complex Systems, and Representations of Lie Algebras; Acronym: QuantiXLie; Leader: Hrvoje Buljan; Jurisdiction: eu; Funding stream: European Regional Development Fund
• Project: Number: 824093; Title (croatian): Jaka nuklearna sila na granici znanja: temeljna istraživanja i primjene; Title (english): The strong interaction at the frontier of knowledge: fundamental research and applications; Acronym: STRONG-2020; Jurisdiction: eu; Funding stream: Horizon 2020
• Document URL: https://link.springer.com/10.1007/JHEP12(2023)192
• Type of resource: Text
• Access conditions: Open access
• Public note: © The Authors. Article funded by SCOAP3.This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. Received: October 24, 2023. Accepted: December 7, 2023. Published: December 28, 2023.
• Created on: 2024-07-19 12:20:46