65 citations · 371 across the 37 of their papers we have counts for
27 papers · 1 filter
Interplay between final-state nucleon distortion, nuclear transparency and intranuclear cascade models in neutrino event generators
R. González-Jiménez, A. Nikolakopoulos, J. McKean +7
We present an overview of the relativistic distorted-wave impulse approximation (RDWIA) for lepton-nucleus scattering, with emphasis on its use as an elementary-vertex model in eve…
Electromagnetic responses induced by one- and two-body nuclear currents in inclusive electron-nucleus scattering
Kajetan Niewczas, Ashish Kumar Jha, Raúl González-Jiménez +3
The longitudinal and transverse nuclear response functions encode information about the electromagnetic behavior of the nuclear target probed in inclusive electron-nucleus scatteri…
Explicitly on-shell currents in relativistic mean field models
Alexis Nikolakopoulos, Ryan Plestid
Relativistic mean field models are a useful tool for modeling semi-leptonic scattering and photo production on nuclei. When using free-nucleon currents, it is often claimed that th…
Charged-Current Neutrino-Induced Single-Pion Production in the Superscaling Approach and Relativistic Distorted-Wave Impulse Approximation
Jesus Gonzalez-Rosa, Alexis Nikolakopoulos, Maria B. Barbaro +3
In this work, we present a detailed comparison of the SuSAv2 (SuperScaling Approach version 2) and RDWIA (Relativistic Distorted-Wave Impulse Approximation) models with measurement…
Computing neutrino cross sections from Euclidian responses
Alexis Nikolakopoulos, Noemi Rocco
Energy integrated neutrino cross sections are integrals of nuclear responses weighted with kinematic prefactors. We decompose the prefactors into a limited set of functions of ener…
Factorized distorted wave calculations for electron, neutrino, and BSM processes
Alexis Nikolakopoulos, Raúl González-Jiménez
We point out that, under certain conditions, the nuclear currents that couple to vector bosons can be written as the trace of the product of two matrices. One contains `nucleon dyn…
Electron-induced single-pion production to constrain the neutron structure in Ar. A proof of concept
J. García-Marcos, M. Hooft, T. Franco-Munoz +5
We study electron-induced single-pion production as a way to constrain the neutron structure of Ar, information that is necessary for neutrino experiments using argon detect…
Quark Phase Space Distributions in Nuclei
Alexis Nikolakopoulos, Gerald A. Miller
In [PRC 110, 025201], the authors construct a model for nuclear matter which features a quarkyonic phase. A main feature in this model is that the nucleon occupation is strongly re…
Final-state interactions in neutrino-induced proton knockout from argon in MicroBooNE
A. Nikolakopoulos, A. Ershova, R. González-Jiménez +5
Neutrino event generators make use of intranuclear cascade models (INCs), to predict the kinematics of hadrons produced in neutrino-nucleus interactions. We perform a consistent co…
Towards a more complete description of nucleon distortion in lepton-induced single-pion production at low-
J. García-Marcos, T. Franco-Munoz, R. González-Jiménez +3
Theoretical predictions for lepton-induced single-pion production (SPP) on C are revisited in order to assess the effect of different treatments of the current operator. On…
Lepton-Nucleus Interactions within Microscopic Approaches
Alexis Nikolakopoulos, Noah Steinberg, Alessandro Lovato +1
This review paper emphasizes the significance of microscopic calculations with quantified theoretical error estimates in studying lepton-nucleus interactions and their implications…
Relativistic effects in Green's function Monte Carlo calculations of neutrino-nucleus scattering
Alexis Nikolakopoulos, Alessandro Lovato, Noemi Rocco
Microscopic calculations of neutrino-nucleus scattering cross sections are critical for the success of the neutrino-oscillation program. In addition to retaining nuclear correlatio…
From inclusive to semi-inclusive one-nucleon knockout in neutrino event generators
Alexis Nikolakopoulos, Steven Gardiner, Afroditi Papadopoulou +2
In neutrino event generators, for models for neutrino and electron scattering only inclusive cross sections are implemented. When these models are used to describe a semi-inclusive…
Assessing the theory-data tension in neutrino-induced charged pion production: the effect of final-state nucleon distortion
Alexis Nikolakopoulos, Raúl González-Jiménez, Natalie Jachowicz +1
Pion production on nuclei constitutes a significant part of the total cross section in experiments involving few-GeV neutrinos. Combined analyses of data on deuterium and heavier n…
Benchmarking intra-nuclear cascade models for neutrino scattering with relativistic optical potentials
Alexis Nikolakopoulos, Raúl González-Jiménez, Natalie Jachowicz +3
The description of final-state interactions (FSI) in the large phase space probed in neutrino experiments poses a great challenge. In neutrino experiments, which operate under semi…
Nuclear medium effects in neutrino- and antineutrino-nucleus scattering
Natalie Jachowicz, Alexis Nikolakopoulos
In this paper we study the influence of nuclear medium effects on quasi-elastic neutrino-nucleus scattering processes. We focus on effects provided by the nuclear mean field and ra…
Neutrino energy reconstruction from semi-inclusive samples
R. González-Jiménez, M. B. Barbaro, J. A. Caballero +7
We study neutrino-nucleus charged-current reactions on finite nuclei for the situation in which an outgoing muon and a proton are detected in coincidence, i.e., we focus on semi-in…
Modeling quasielastic interactions of monoenergetic kaon decay-at-rest neutrinos
Alexis Nikolakopoulos, Vishvas Pandey, Joshua Spitz +1
Monoenergetic muon neutrinos at 236 MeV are readily produced in intense medium-energy proton facilities (2-3~GeV) when a positive kaon decays at rest (KDAR; $K^+ \rightarr…
Modeling neutrino-nucleus interaction at intermediate energies
R. González-Jiménez, N. Jachowicz, A. Nikolakopoulos +5
We present the current status of the research activities of the Ghent group on neutrino-nucleus interactions. These consist in the modeling of some of the relevant neutrino-nucleus…
Lepton kinematics in low energy neutrino-Argon interactions
Nils Van Dessel, Alexis Nikolakopoulos, Natalie Jachowicz
Background: Neutrinos in the low-energy regime provide a gateway to a wealth of interesting physics. While plenty of literature exists on detailing the calculation and measurement…
Constraints in modeling the quasielastic response in inclusive lepton-nucleus scattering
R. González-Jiménez, M. B. Barbaro, J. A. Caballero +6
We show that the quasielastic (QE) response calculated with the SuSAv2 (superscaling approach) model, that relies on the scaling phenomenon observed in the analysis of (e,e') data…
Low-energy neutrino scattering in experiment and astrophysics
Natalie Jachowicz, Nils Van Dessel, Alexis Nikolakopoulos
We review the relevance of neutrino-nucleus interactions at energy transfers below 100 MeV for accelerator-based experiments, experiments at lower energies and for astrophysical ne…
Nuclear effects in electron- and neutrino-nucleus scattering within a relativistic quantum mechanical framework
Raúl González-Jiménez, Alexis Nikolakopoulos, Natalie Jachowicz +1
We study the impact of the description of the knockout nucleon wave function on electron- and neutrino-induced quasielastic and single-pion production cross sections. We work in a…
Forbidden transitions in neutral and charged current interactions between low-energy neutrinos and Argon
Nils Van Dessel, Natalie Jachowicz, Alexis Nikolakopoulos
Background: The study of low-energy neutrinos and their interactions with atomic nuclei is crucial to several open problems in physics, including the neutrino mass hierarchy, CP-vi…