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Dihadron Fragmentation and the Confinement Transition in Energy Correlators
1Massachusetts Institute of Technology, Center for Theoretical Physics-a Leinweber Institute, Cambridge, Massachusetts 02139, USA.
Physical Review Letters
|March 13, 2026
Summary
This study proves factorization for energy-energy correlators using electron-positron collisions. It connects jet functions to dihadron fragmentation, offering insights into the confinement transition region.
Area of Science:
- High Energy Physics
- Quantum Chromodynamics
- Particle Physics
Background:
- Factorization theorems are crucial for theoretical predictions in high-energy particle collisions.
- Understanding the behavior of particle jets and their correlations is key to probing fundamental interactions.
Purpose of the Study:
- To establish a nonperturbative proof of factorization for energy-energy correlators in electron-positron collisions.
- To link theoretical frameworks for particle production and jet properties.
Main Methods:
- Relating the factorization of e^{+}e^{-}→h_{1}h_{2}X processes to energy-energy correlators in the collinear limit.
- Utilizing established techniques in quantum chromodynamics and perturbative/nonperturbative calculations.
Main Results:
- A nonperturbative proof of factorization for energy-energy correlators is provided.
- The energy correlator jet function is successfully related to transverse-momentum-sensitive dihadron fragmentation functions.
- A rigorous description of the confinement transition region is achieved.
Conclusions:
- The study establishes a robust theoretical framework for analyzing energy-energy correlators.
- The findings provide a deeper understanding of hadronization and the transition to confined states in quantum chromodynamics.
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