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Color fluctuations in the nucleon in high-energy scattering
L Frankfurt1, M Strikman, D Treleani
1School of Physics and Astronomy, Tel Aviv University, 69978 Tel Aviv, Israel.
Quantum fluctuations in nucleon parton densities are explored using QCD factorization and soft diffraction. This research explains HERA data on gluon density and predicts scattering ratios, offering insights into particle physics.
Area of Science:
- High-energy particle physics
- Quantum Chromodynamics (QCD)
- Nuclear physics
Background:
- Nucleon parton densities exhibit quantum fluctuations.
- Understanding these fluctuations is key to explaining scattering data.
Purpose of the Study:
- To combine QCD factorization with cross-section fluctuations for analyzing parton densities.
- To investigate the role of gluon density fluctuations in ep and pp/pbar{p} scattering.
Main Methods:
- Applying QCD factorization for hard processes.
- Utilizing the concept of cross-section fluctuations in soft diffraction.
- Developing a dynamical model to explain experimental data.
Main Results:
- Relating small-x gluon density fluctuations to vector meson production ratios in ep scattering.
- A model successfully explains HERA data and predicts scattering ratio dependencies.
- Fluctuations enhance multiple hard processes in pp/pbar{p} scattering but do not fully explain Tevatron CDF data.
Conclusions:
- Quantum fluctuations significantly impact nucleon structure and scattering processes.
- The proposed model provides a framework for understanding these phenomena.
- Further research is needed to reconcile theoretical predictions with all experimental observations, particularly in pp/pbar{p} scattering.
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