Tuning Pythia for Forward Physics Experiments

2023/09/15 by Fieg, Max, Kling, Felix, Schulz, Holger +1 · 8 citations
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.2309.08604

Abstract

Event generators like Pythia play an important role in physics studies at the Large Hadron Collider (LHC). While they make accurate predictions in the central region, i.e. at pseudorapidities η<5, a disagreement between Pythia and measurements in the forward region, η>7, has been observed. We introduce a dedicated forward physics tune for the Pythia event generator to be used for forward physics studies at the LHC, which uses a more flexible modelling of beam remnant hadronization and is tuned to available particle spectra measured by LHCf. Furthermore, we provide an uncertainty estimate on the new tune in a data-driven way which can be used as a means of flux uncertainty for future forward physics studies. We demonstrate an application of our tune by showing the updated neutrino and dark photon spectra at the FASER experiment.

Cited by

• Letter of Intent: The Forward Physics Facility
• NLO event generation for LHC neutrinos and application to flux measurements at FASER
• Probing the Cosmic Ray Background of Gamma-Ray Astronomy with Hadron Colliders
• Forward neutrino production and event rates at the Future Circular Collider for hadron collisions
• Long-lived Axion-Like Particles from Tau Decays
• Anti-Electron Neutrinos at High-Energy Neutrino Experiments: Identification Strategies and Physics Potential
• Neutrino Physics at Future Colliders
• Measurements of charmed meson and antimeson production asymmetries at √(s) =13.6 TeV

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