Power-like corrections and the determination of the gluon distribution
arXiv:hep-ph/0610078 · doi:10.1016/j.physletb.2006.10.053
Abstract
Power-suppressed corrections to parton evolution may affect the theoretical accuracy of current determinations of parton distributions. We study the role of multigluon-exchange terms in the extraction of the gluon distribution for the Large Hadron Collider (LHC). Working in the high-energy approximation, we analyze multi-gluon contributions in powers of 1/Q^2. We find a moderate, negative correction to the structure function's derivative d F_2 / d \ln Q^2, characterized by a slow fall-off in the region of low to medium Q^2 relevant for determinations of the gluon at small momentum fractions.
References in corpus (16)
- New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
- Saturation in Diffractive Deep Inelastic Scattering
- A Modification of the Saturation Model: DGLAP evolution
- Measurement of the neutral current cross section and F2 structure function for deep inelastic e+p scattering at HERA
- Parton Saturation at Small x and in Large Nuclei
- Uncertainties of predictions from parton distributions. I: Theoretical errors
- Measurement of the Proton Structure Function F_2 at Very Low Q^2 at HERA
- HERA and the LHC - A workshop on the implications of HERA for LHC physics: Proceedings - Part B
- Diffractive deeply inelastic scattering of hadronic states with small transverse size
- Renormalon Model Predictions for Power-Corrections to Flavour Singlet Deep Inelastic Structure Functions
- Hard scattering factorization and light cone hamiltonian approach to diffractive processes
- Color transparency in deeply inelastic diffraction
- The role of F_L(x,Q^2) in parton analyses
- Gluon Distributions and Fits using Dipole Cross-Sections
- Effective QCD coupling and power corrections to photon-photon scattering
- Power Corrections to Flavour-Singlet Structure Functions
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