NLO corrections to the deeply virtual meson production revisited: impact on the extraction of generalized parton distributions
arXiv:2310.13837 · doi:10.1007/JHEP12(2023)192 10.1007/JHEP02(2024)225
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.
36 pages, 13 figures, small corrections, refs added, matches published version + erratum
References in corpus (18)
- Electron-Ion Collider in China
- Towards a fitting procedure for deeply virtual Compton scattering at next-to-leading order and beyond
- NLO corrections to timelike, spacelike and double deeply virtual Compton scattering
- Single diffractive hard exclusive processes for the study of generalized parton distributions
- Next-to-leading order corrections in exclusive meson production
- Generalized parton distributions through universal moment parameterization: zero skewness case
- Generalized parton distributions through universal moment parameterization: non-zero skewness case
- Phenomenology of double deeply virtual Compton scattering in the era of new experiments
- Deeply virtual Compton scattering beyond next-to-leading order: the flavor singlet case
- Two-loop coefficient function for DVCS: Vector contributions
- Some numerical studies of the evolution of generalized parton distributions
- Dual parametrization of generalized parton distributions in two equivalent representations
- The axial-vector contributions in two-photon reactions: pion transition form factor and deeply-virtual Compton scattering at NNLO in QCD
- Next-to-leading-power kinematic corrections to DVCS: a scalar target
- Accessing chiral-even quark generalised parton distributions in the exclusive photoproduction of a pair with large invariant mass in both fixed-target and collider experiments
- Higher-Order Kinematical Effects in Deeply Virtual Compton Scattering
- Exclusive production of quarkonia pairs in collinear factorization framework
- Wide-angle photo- and electroproduction of pions to twist-3 accuracy
Cited by in corpus (6)
- Moments of Axial-Vector GPD from Lattice QCD: Quark Helicity, Orbital Angular Momentum, and Spin-Orbit Correlation
- Generalized parton distributions from the pseudo-distribution approach on the lattice
- Parametrization of GPDs from t-channel string exchange in AdS spaces
- String-based parametrization of nucleon GPDs at any skewness: a comparison to lattice QCD
- The kaon off-shell generalized parton distributions and transverse momentum dependent parton distributions
- Conformal moments of the two-loop coefficient functions in DVCS