NNLO interpolation grids for jet production at the LHC

Area of Science:

• High Energy Physics
• Quantum Chromodynamics
• Computational Physics

Background:

• Fast interpolation-grid frameworks are crucial for evaluating higher-order predictions in quantum chromodynamics (QCD).
• These frameworks allow flexible choices of parton distribution functions (PDFs) and the strong coupling constant ($$).
• They are essential for extracting PDFs, Standard Model parameters, and studying scale dependence of cross sections.

Purpose of the Study:

• To extend the APPLfast project to include hadron-hadron collider processes.
• To enable next-to-next-to-leading order (NNLO) perturbative QCD calculations.
• To present an application for jet production at the Large Hadron Collider (LHC).

Main Methods:

• Utilizing the APPLfast project as a generic interface.
• Integrating parton-level Monte Carlo generators with APPLgrid and fastNLO libraries.
• Implementing grid interpolation techniques for NNLO calculations.

Main Results:

• Successful extension of APPLfast to hadron-hadron collider processes.
• Demonstration of efficient and flexible evaluation of higher-order predictions.
• Application to jet production at the LHC, showcasing the framework's utility.

Conclusions:

• The extended APPLfast project provides a powerful tool for advanced QCD studies.
• It facilitates precise theoretical predictions for high-energy collider experiments.
• The framework significantly aids in the analysis of experimental data from colliders like the LHC.