Lepton kinematics in low-energy neutrino-argon interactions

Dessel, N. Van; Nikolakopoulos, Alexis; Jachowicz, Natalie

doi:10.1103/physrevc.101.045502

Cited by 17 publications

(9 citation statements)

References 60 publications

(38 reference statements)

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“…This approach involves realistic nuclear structure calculations of proton and neutron density distributions making it more reliable compared to the phenomenological approaches that rely on the approximation ρ n (r) ≈ ρ p (r), utilizing empirical values of ρ p (r) extracted from electron scattering experiments. Our approach has been developed and tested against several electron-and neutrinonucleus scattering scenarios [41][42][43][44][45][46][47][48][49][50][51][52][53][54]. The effects of longrange correlations included through a continuum Random Phase Approximation (CRPA) approach, described in aforementioned references, are found to be very small in evaluating ground state densities of nuclei [55] and are therefore not included in this work.…”

Section: B Form Factormentioning

confidence: 99%

Nuclear Structure Physics in Coherent Elastic Neutrino-Nucleus Scattering

Van Dessel,

Pandey,

Ray

et al. 2020

Preprint

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The prospects of extracting new physics signals in a coherent elastic neutrino-nucleus scattering (CEνNS) process are limited by the precision with which the underlying nuclear structure physics, embedded in the weak nuclear form factor, is known. We present microscopic nuclear structure physics calculations of charge and weak nuclear form factors and CEνNS cross sections on 12 C, 16 O, 40 Ar, 56 Fe and 208 Pb nuclei. We obtain the proton and neutron densities, and charge and weak form factors by solving Hartree-Fock equations with a Skyrme (SkE2) nuclear potential. We validate our approach by comparing 208 Pb and 40 Ar charge form factor predictions with elastic electron scattering data. In view of the worldwide interest in liquid-argon based neutrino and dark matter experiments, we pay special attention to the 40 Ar nucleus and make predictions for the 40 Ar weak form factor and the CEνNS cross sections. Furthermore, we attempt to gauge the level of theoretical uncertainty pertaining to the description of the 40 Ar form factor and CEνNS cross sections by comparing relative differences between recent microscopic nuclear theory and widely-used phenomenological form factor predictions. Future precision measurements of CEνNS will potentially help in constraining these nuclear structure details that will in turn improve prospects of extracting new physics.

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Section: B Form Factormentioning

confidence: 99%

Nuclear Structure Physics in Coherent Elastic Neutrino-Nucleus Scattering

Van Dessel,

Pandey,

Ray

et al. 2020

Preprint

Self Cite

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“…The developed theoretical nuclear models should not only cover different reaction channels and kinematics but also be applicable to various nuclear targets. If many calculations exist for the doubly magic N = Z nuclei 12 C and 16 O, the effort to investigate the 40 Ar started only recently [80,82,[112][113][114][115][116][117][118][119][120] and often it requires formal generalization of the existing approaches, being the 40 Ar an open-shell nucleus with N = Z.…”

Section: Open Issues In the Theoretical Understanding Of Cross Sectionsmentioning

confidence: 99%

A New Generation of Neutrino Cross Section Experiments: Challenges and Opportunities

et al. 2021

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Our knowledge of neutrino cross sections at the GeV scale, instrumental to test CP symmetry violation in the leptonic sector, has grown substantially in the last two decades. Still, their precision and understanding are far from the standard needed in contemporary neutrino physics. Nowadays, the knowledge of the neutrino cross section at O(10%) causes the main systematic uncertainty in oscillation experiments and jeopardizes their physics reach. In this paper, we envision the opportunities for a new generation of cross section experiments to be run in parallel with DUNE and HyperKamiokande. We identify the most prominent physics goals by looking at the theory and experimental limitations of the previous generation of experiments. We highlight the priorities in the theoretical understanding of GeV cross sections and the experimental challenges of this new generation of facilities.

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“…These are currently neglected via the allowed approximation. Recent theoretical calculations using a Continuum Random Phase Approximation (CRPA) approach [191,192] indicate that the forbidden contributions can have a significant impact on both the total cross section and the kinematic distributions of the outgoing lepton.…”

Section: Prospects For Future Developmentmentioning

confidence: 99%

Simulating low-energy neutrino interactions with MARLEY

Gardiner

2021

Preprint

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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.

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Lepton kinematics in low-energy neutrino-argon interactions

Cited by 17 publications

References 60 publications

Nuclear Structure Physics in Coherent Elastic Neutrino-Nucleus Scattering

Nuclear Structure Physics in Coherent Elastic Neutrino-Nucleus Scattering

A New Generation of Neutrino Cross Section Experiments: Challenges and Opportunities

Simulating low-energy neutrino interactions with MARLEY

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