The GENIE Neutrino Monte Carlo Generator: Physics and User Manual

Andreopoulos, C.; Barry, Christopher T.; Dytman, S. A.; Gallagher, H.; Golan, T.; Hatcher, Robert D.; Perdue, G. N.; Yarba, J.

doi:10.48550/arxiv.1510.05494

Cited by 147 publications

(225 citation statements)

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“…Each change is balanced by changes in other channels to make the overall fraction of events affected by FSI constant. Thus, all inclusive event distributions (i.e., those that are not sensitive to final hadron multiplicities and kinematics) are expected to be invariant under FSI model variations [54].…”

Section: Final-state Interaction Reweightingmentioning

confidence: 99%

New CC0π GENIE Model Tune for MicroBooNE

Abratenko,

An,

Anthony

et al. 2021

Preprint

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Obtaining a high-quality interaction model together with associated uncertainties is an essential task for neutrino experiments studying oscillations, nuclear scattering processes, or both. As a primary input to the MicroBooNE experiment's next generation of neutrino cross-section measurements and its flagship investigation of the MiniBooNE low-energy excess, we present a new tune of the charged-current pionless (CC0π) interaction cross section via the two major contributing processes -charged-current quasielastic and multi-nucleon interaction models -within version 3.0.6 of the GENIE neutrino event generator. Parameters in these models are tuned to muon neutrino CC0π cross-section data obtained by the T2K experiment, which provides an independent set of neutrino interactions with a neutrino flux in a similar energy range to MicroBooNE's neutrino beam. Although the fit is to muon neutrino data, the information carries over to electron neutrino simulation because the same underlying models are used in GENIE. A number of novel fit parameters were developed for this work, and the optimal parameters were chosen from existing and new sets. We choose to fit four parameters, that have not previously been constrained by theory or data. Thus, this will be called a theory-driven tune. The result is an improved match to the T2K CC0π data with more well-motivated uncertainties based on the fit.

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Section: Final-state Interaction Reweightingmentioning

confidence: 99%

New CC0π GENIE Model Tune for MicroBooNE

Abratenko,

An,

Anthony

et al. 2021

Preprint

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“…It is particularly interesting to note that the treatment of final state interactions (FSI) via a distortion of the outgoing nucleon wave function within the HF-CRPA model leads to significantly different predictions for muon and electron neutrino cross sections at low energy transfers compared to widely used plane wave impulse approximation (PWIA) models (which do not include FSI) [11]. In this paper we report the implementation of the HF-CRPA model in the GENIEv3 neutrino-nucleus interaction event generator [12,13] and evaluate how else it differs from other available CCQE models. Particular focus is placed on how the predictions differ between different nuclear targets and between neutrino and anti-neutrino interactions within the low energy and momentum transfer region where nuclear effects are most relevant.…”

Section: Introductionmentioning

confidence: 99%

Implementation of the CRPA model in the GENIE event generator and analysis of nuclear effects in low-energy transfer neutrino-nucleus interactions

Dolan,

Nikolakopoulos,

Page

et al. 2021

Preprint

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We present the implementation and validation of the Hartree-Fock continuum random phase approximation (HF-CRPA) model in the GENIE neutrino-nucleus interaction event generator and a comparison of the subsequent predictions to experimental measurements of lepton kinematics from interactions with no mesons in the final state. These predictions are also compared to those of other models available in GENIE. It is shown that, with respect to these models, HF-CRPA predicts a significantly different evolution of the cross section when moving between different interaction targets, when considering incoming anti-neutrinos compared to neutrinos and when changing neutrino energies. These differences are most apparent for interactions with low energy and momentum transfer. It is also clear that the impact of nucleon correlations within the HF-CRPA framework is very different than in GENIE's standard implementation of RPA corrections. Since many neutrino oscillation experiments rely on their input model to extrapolate between targets, flavours, and neutrino energies, the newly implemented HF-CRPA model provides a useful means to verify that such differences between models are appropriately covered in oscillation analysis systematic error budgets.

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“…Lalakulich et al [50] have suggested a constrain of 1.1 GeV ≤ W ≤ 1.6 GeV on the center of mass energy in order to avoid the double counting of events in the transition region, while Hagiwara et al [22] considers this limit to be 1.4 GeV ≤ W ≤ 1.6 GeV, whereas W > 1.4 GeV have been considered by Gazizov et al [51] and Kretzer et al [52], as the onset of DIS processes. Besides theoretical studies, in the Monte Carlo event generators like NEUT [53] and GENIE [54] these boundaries are taken to be W > 2 GeV and W > 1.7 GeV, respectively, for the simulation of neutrino events. The region of W ≥ 2 GeV and Q 2 ≥ 1 GeV 2 is considered to be the region of safe DIS or true DIS in MINERvA experiment [55,56].…”

Section: Introductionmentioning

confidence: 99%

Nuclear medium effects in the deep inelastic $ν_τ/\barν_τ-^{40}Ar$ scattering at DUNE energies

Zaidi,

Ansari,

Athar

et al. 2021

Preprint

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The nuclear medium effects are studied in the ντ /ντ interactions from nuclei in the deep inelastic scattering (DIS) region and applied to the 40 Ar nucleus to obtain the scattering cross sections in the energy region of the proposed DUNE experiment. The free nucleon structure functions (FiN (x, Q 2 ); (i = 1 − 5)) have been calculated at the next-to-leading order (NLO) using Martin-Motylinski-Harland Lang-Thorne (MMHT) 2014 as well as The Coordinated Theoretical-Experimental Project on QCD (CTEQ6.6) parameterizations for parton distribution functions (PDFs) and including the effect of perturbative and nonperturbative QCD corrections [1]. These free nucleon structure functions are then convoluted with the nucleon spectral function in the nucleus to obtain the nuclear structure functions (FiA(x, Q 2 ); (i = 1 − 5)). The nucleon spectral function takes into account the Fermi motion and the binding energy of the nucleons as well as the nucleon correlations within the nucleus. These nuclear structure functions are then used to calculate the deep inelastic scattering cross sections. Moreover, the contribution of π and ρ mesons as well as the corrections due to the shadowing and antishadowing effects in the relevant kinematic region of the Bjorken variable x are also included. The numerical results for the cross sections have been presented and compared with the results obtained in the phenomenological approach using nuclear structure functions from nCTEQnu.

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The GENIE Neutrino Monte Carlo Generator: Physics and User Manual

Cited by 147 publications

References 0 publications

New CC0π GENIE Model Tune for MicroBooNE

New CC0π GENIE Model Tune for MicroBooNE

Implementation of the CRPA model in the GENIE event generator and analysis of nuclear effects in low-energy transfer neutrino-nucleus interactions

Nuclear medium effects in the deep inelastic $ν_τ/\barν_τ-^{40}Ar$ scattering at DUNE energies

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