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Towards a Global QCD Analysis of Fragmentation Functions at Next-to-Next-to-Leading Order Accuracy
Ignacio Borsa1, Rodolfo Sassot1, Daniel de Florian2
1Departamento de Física and IFIBA, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 1, 1428 Buenos Aires, Argentina.
Physical Review Letters
|July 16, 2022
Summary
This study presents a global Quantum Chromodynamics (QCD) analysis of parton-to-pion fragmentation functions. It incorporates new semi-inclusive deep-inelastic scattering data at next-to-next-to-leading order (NNLO) accuracy.
Area of Science:
- High Energy Physics
- Quantum Chromodynamics (QCD)
- Particle Physics
Background:
- Parton-to-pion fragmentation functions are crucial for understanding hadron production in high-energy collisions.
- Previous analyses were limited in accuracy or data scope.
- Accurate fragmentation functions are essential for interpreting experimental results.
Purpose of the Study:
- To perform a global Quantum Chromodynamics (QCD) analysis of parton-to-pion fragmentation functions.
- To achieve next-to-next-to-leading order (NNLO) accuracy in the analysis.
- To incorporate semi-inclusive deep-inelastic scattering (SIDIS) multiplicity data for the first time.
Main Methods:
- Global QCD analysis incorporating single-inclusive electron-positron annihilation data.
- Inclusion of semi-inclusive deep-inelastic scattering multiplicity data.
- Utilization of approximate NNLO QCD corrections within the threshold resummation formalism.
Main Results:
- The study provides a global QCD analysis of parton-to-pion fragmentation functions at NNLO accuracy.
- Incorporation of SIDIS data improves the description of fragmentation processes.
- The impact of NNLO corrections on SIDIS datasets and fragmentation functions is explored.
Conclusions:
- The inclusion of SIDIS data and NNLO corrections enhances the precision of parton-to-pion fragmentation functions.
- This analysis offers a more comprehensive understanding of hadronization in Quantum Chromodynamics.
- The results are vital for future high-energy physics experiments and theoretical developments.
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