Calculation of oscillation probabilities of atmospheric neutrinos using nuCraft

TL;DR

NuCraft is an open-source Python tool that accurately computes atmospheric neutrino oscillation probabilities considering complex factors like sterile neutrinos, CP violation, and Earth's matter effects, aiding neutrino physics research.

Contribution

It introduces a flexible, comprehensive Python package for calculating neutrino oscillation probabilities with advanced features and customizable Earth models.

Findings

Supports arbitrary neutrino flavors including sterile neutrinos

Incorporates matter effects with configurable Earth models

Accounts for neutrino production height distribution

Abstract

NuCraft (nucraft.hepforge.org) is an open-source Python project that calculates neutrino oscillation probabilities for neutrinos from cosmic-ray interactions in the atmosphere for their propagation through Earth. The solution is obtained by numerically solving the Schr\"odinger equation. The code supports arbitrary numbers of neutrino flavors including additional sterile neutrinos, CP violation, arbitrary mass hierarchies, matter effects with a configurable Earth model, and takes into account the production height distribution of neutrinos in the Earth's atmosphere.