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Identified Hadron Production in Deeply Inelastic Neutrino-Nucleon Scattering.

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Neutrino deep-inelastic scattering precisely probes parton and fragmentation functions. This study computes charged pion production, showing high sensitivity to fragmentation function parameters and discussing future experiments.

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Area of Science:

  • Particle Physics
  • Quantum Chromodynamics (QCD)
  • High-Energy Physics

Background:

  • Semi-inclusive deep-inelastic scattering (SIDIS) is crucial for understanding parton distribution functions (PDFs) and hadron fragmentation functions (HFFs).
  • Neutrino-induced SIDIS offers complementary information to charged-lepton-induced SIDIS due to different probing combinations of PDFs and HFFs.

Purpose of the Study:

  • To compute charged pion production in (anti)neutrino-induced SIDIS up to second order in perturbative Quantum Chromodynamics (pQCD).
  • To compare theoretical predictions with precise legacy fixed-target experimental data.
  • To investigate the sensitivity of these data to the parametrization of fragmentation functions and explore future experimental prospects.

Main Methods:

  • Calculation of charged pion production cross-sections in neutrino-induced SIDIS.
  • Application of perturbative Quantum Chromodynamics (pQCD) up to next-to-next-to-leading order (NNLO).
  • Comparison of theoretical predictions with existing fixed-target experimental data.

Main Results:

  • The study demonstrates a high sensitivity of the analyzed data to the parametrization of hadron fragmentation functions.
  • Predictions for charged pion production are computed and compared to legacy fixed-target data.
  • The findings highlight the potential of neutrino-induced SIDIS for constraining fundamental parton and fragmentation functions.

Conclusions:

  • Neutrino-induced SIDIS provides a powerful tool for probing parton and fragmentation functions.
  • The results emphasize the importance of precise data and theoretical calculations for advancing our understanding of QCD.
  • Future SIDIS experiments, such as those at the LHC Forward Physics Facility, are expected to offer even greater insights.