An event generator for neutrino-induced Deep Inelastic Scattering and applications to neutrino astronomy

TL;DR

This paper introduces an advanced neutrino event generator for deep inelastic scattering, enabling detailed simulations of neutrino interactions at very high energies relevant for astrophysics and collider experiments.

Contribution

It extends a next-to-leading-order event generator to neutrino interactions, integrating with PYTHIA 8 and enabling realistic high-energy neutrino collision simulations.

Findings

Predictions for differential distributions up to 1 PeV neutrino energy.

Demonstrates the generator's capability for high-energy neutrino physics.

Facilitates studies of higher-order corrections in neutrino interactions.

Abstract

We extend the recently presented, fully exclusive, next-to-leading-order accurate event generator for the simulation of massless neutral- and charged-current deep inelastic scattering (DIS) to the case of incoming neutrinos. The generator can be used to study neutrino-nucleon interactions at (ultra) high energies, and is relevant for a range of fixed-target collider experiments and large-volume neutrino detectors, investigating atmospheric and astrophysical neutrinos. The matching with multi-purpose event generators such as PYTHIA 8 is performed with the POWHEG method, and accounts for parton showering and non-perturbative effects such as hadronization. This makes it possible to investigate higher-order perturbative corrections to realistic observables, such as the distribution of charged particles. To illustrate the capabilities of the code we provide predictions for several differential distributions in fixed-target collisions for neutrino energies up to 1 PeV.