MeVPrtl: An Event Generator for Dark Sector Particles in the Short-Baseline Neutrino Program
ICARUS Collaboration, SBND Collaboration (for the SBN Program)

TL;DR
MeVPrtl is a modular event generator designed for simulating BSM particles in the SBN Program, facilitating studies of dark matter, neutrino mass, and CP violation.
Contribution
It introduces a flexible interface for implementing various BSM models and connects them with detector simulation inputs for the SBN Program.
Findings
Implemented and validated Higgs portal, heavy neutral lepton, and QCD axion models.
Provides detailed interface specifications for BSM particle simulation.
Enables efficient study of dark sector physics in neutrino experiments.
Abstract
MeVPrtl is a modular event generator of beyond the Standard Model (BSM) physics particles developed for use in the Short-Baseline Neutrino (SBN) Program. A large class of BSM physics models predict that new particles could be produced in the intense Booster Neutrino Beam (BNB) and Neutrinos at the Main Injector (NuMI) beams at Fermilab, travel to the SBN Program detectors, and decay into Standard Model (SM) particles. These new physics models are motivated by dark matter, the neutrino mass scale, and a solution to the strong CP problem. MeVPrtl provides an interface to implement the overlapping phenomenology of these models, and to connect them with meson flux inputs and object outputs used by the SBN Program's LArSoft-based detector simulation. Implementations for the Higgs portal, heavy neutral lepton, and heavy QCD axion models exist within MeVPrtl. In this paper these…
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