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Charm-Quark Production in Deep-Inelastic Neutrino Scattering at Next-to-Next-to-Leading Order in QCD
Edmond L Berger1, Jun Gao1, Chong Sheng Li2,3
1High Energy Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
Physical Review Letters
|June 11, 2016
Summary
We calculated charm-quark production in deep-inelastic scattering, finding significant corrections. This research aids in determining the strange quark
Area of Science:
- High Energy Physics
- Quantum Chromodynamics
- Particle Physics
Background:
- Deep-inelastic scattering experiments probe nucleon structure.
- Charm-quark production is a key process in understanding quantum chromodynamics (QCD).
- Previous calculations lacked full charm-quark mass dependence.
Purpose of the Study:
- To perform a fully differential next-to-next-to-leading order (NNLO) calculation for charm-quark production.
- To include the full charm-quark mass dependence in the calculation.
- To compare theoretical predictions with experimental data and improve parton distribution function (PDF) extraction.
Main Methods:
- Employed perturbative quantum chromodynamics (pQCD) at NNLO.
- Calculated differential cross-sections for charm-quark production in charged-current deep-inelastic scattering.
- Compared predictions with experimental data from dimuon production in neutrino-nucleus scattering.
Main Results:
- NNLO corrections are substantial and comparable to next-to-leading order (NLO) corrections in specific kinematic regions.
- The full charm-quark mass dependence significantly impacts the theoretical predictions.
- The calculations provide a robust framework for analyzing experimental data.
Conclusions:
- The NNLO calculation with full mass dependence offers improved precision for charm-quark production.
- These results enhance the accuracy of strange quark parton distribution function extraction.
- This work contributes to a deeper understanding of fundamental interactions in particle physics.
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