Simulating low-energy neutrino interactions with MARLEY

Abstract

Monte Carlo event generators are a critical tool for the interpretation of data obtained by neutrino experiments. Several modern event generators are available which are well-suited to the GeV energy scale used in studies of accelerator neutrinos. However, theoretical modeling differences make their immediate application to lower energies difficult. In this paper, I present a new event generator, MARLEY, which is designed to better address the simulation needs of the low-energy (tens of MeV and below) neutrino community. The code is written in C++14 with an optional interface to the popular ROOT data analysis framework. The current release of MARLEY (version 1.2.0) emphasizes simulations of the reaction 40 Ar(ν e , e − ) 40 K * but is extensible to other channels with suitable user input. This paper provides detailed documentation of MARLEY's implementation and usage, including guidance on how generated events may be analyzed and how MARLEY may be interfaced with external codes such as Geant4. Further information about MARLEY is available on the official website at http://www.marleygen.org.

SN1987A still shining: A Quest for Pseudo-Dirac Neutrinos

“…In this work, we will consider just the observation of the electron. To simulate the neutrino interaction in the Liquid Argon detector, we used MARLEY, a Montecarlo event generator, to include all the nuclear transitions happening after the neutrino interaction [52]. After a neutrino interaction, we consider that it can be detected if an electron with energy larger than 4 MeV is generated.…”

“…The main interaction channel of MeV neutrinos at the DUNE liquid Argon detectors corresponds to ν e scattering with Ar. To simulate the neutrino interaction in Liquid Argon detector, we used MARLEY, a Montecarlo event generator that allow to include all the nuclear transitions happening after the neutrino interaction [52]. On the other hand, HK is a water Cherenkov detector, which is mostly sensitive to ν e through the inverse beta decay process [53].…”

Recent highlights from GENIE v3

“…open-source MARLEY generator[105] provides a CEνNS model which relies on a rough approximation: the Q 2 dependence of the nuclear form factor is completely neglected.…”