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Transverse pion structure beyond leading twist in constituent models
C Lorcé1, B Pasquini2,3, P Schweitzer4,5
1Centre de Physique Théorique, École polytechnique, CNRS, Université Paris-Saclay, 91128 Palaiseau, France.
The European Physical Journal. C, Particles and Fields
|July 28, 2017
Summary
Understanding pion structure via transverse-momentum-dependent parton distribution functions (TMDs) is key for Drell-Yan experiments. This study explores pion TMDs beyond leading twist using a light-front model and compares results with bag and spectator models.
Area of Science:
- High Energy Physics
- Quantum Chromodynamics
- Particle Physics
Background:
- Pion structure is crucial for interpreting Drell-Yan experiments.
- Transverse-momentum-dependent parton distribution functions (TMDs) describe hadron structure.
- Understanding pion TMDs is essential for ongoing Drell-Yan experiments.
Purpose of the Study:
- To describe pion TMDs beyond leading twist.
- To utilize a light-front constituent framework for pion modeling.
- To compare results with existing pion models.
Main Methods:
- Formulation of a pion model in the light-front constituent framework.
- Calculation of pion TMDs beyond leading twist.
- Review and derivation of results within bag and spectator models.
Main Results:
- A detailed description of pion TMDs beyond leading twist is provided.
- New results for pion TMDs are derived within the bag and spectator models.
- Comparative analysis of different theoretical frameworks for pion TMDs.
Conclusions:
- The light-front constituent model offers a framework for describing pion TMDs beyond leading twist.
- Comparison with bag and spectator models provides insights into theoretical uncertainties.
- This work contributes to the precise interpretation of Drell-Yan scattering data.
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