The hard pomeron in soft data

Abstract

We show that the data for the total cross section and for the real part of the elastic amplitude indicate the presence of a hard pomeron in pi p and Kp elastic scattering at t=0, compatible with that observed in deep inelastic scattering. We show that such a hard pomeron is also compatible with pp and pbar p data, provided one unitarises it at high energy.

13 pages, 5 figures, plain LaTeX, references added and typos removed

References in corpus (4)

• Benchmarks for the Forward Observables at RHIC, the Tevatron-run II and the LHC
• Does the hard pomeron obey Regge factorisation?
• The Dipole Picture and Saturation in Soft Processes
• t-channel unitarity and photon cross sections

Cited by in corpus (28)

• Diffractive Vector Meson Production at HERA: from Soft to Hard QCD
• The pion-pion scattering amplitude. III: Improving the analysis with forward dispersion relations and Roy equations
• The pion-pion scattering amplitude. II: Improved analysis above $\bar{K}K$ threshold
• Total cross-section and rapidity gap survival probability at the LHC through an eikonal with soft gluon resummation
• GPDs of the nucleons and elastic scattering at high energies
• Critical analysis of derivative dispersion relations at high energies
• On the rise of proton-proton cross-sections at high energies
• The soft and the hard pomerons in hadron elastic scattering at small t
• How precisely will the total cross section be measured at the LHC?
• A study on analytic parametrizations for proton-proton cross-sections and asymptotia
• Unitarisation of the hard pomeron and black-disk limit at the LHC
• Phenomenological analysis connecting proton-proton and antiproton-proton elastic scattering
• Elastic $pp$ and $\bar{p}p$ scattering in the models of unitarized pomeron
• Eikonal zeros in the momentum transfer space from proton-proton scattering: An empirical analysis
• t-channel unitarity and photon cross sections
• Hard and soft pomerons in elastic nucleon scattering
• Dispersion relations for meson-proton and proton-proton forward elastic scattering
• The effects of the small t properties of hadronic scattering amplitude on the determination its real part
• Evaluation of the Axial Vector Commutator Sum Rule for Pion-Pion Scattering
• Predictions for high-energy pp and \bar pp scattering from a finite sum of gluon ladders
• GPDs of hadrons and elastic pion-nucleon scattering
• Saturation effects in pp scattering in the impact-parameter representation
• Soft data and the hard pomeron
• Direct extraction of hadronic form factors from elastic-scattering data
• Elastic Meson-Nucleon and Nucleon-Nucleon Scattering: Models vs. All Available Data
• A review of the hard pomeron in soft diffraction
• Hard pomeron contribution to forward elastic scattering
• Impact of saturation on spin effects in proton-proton scattering