arXiv subjects

R K Pradhan

Publications and source records attributed to R K Pradhan.

3 recordsLinked to original sources

arXiv2025

Centre-of-momentum frame analysis of $η$ production in DUNE

A deep understanding of neutrino-nucleus interaction is crucial for the precise measurement of neutrino oscillation parameters and cross section measurements. Various nuclear effects, such as initial state effects (IS) and Final state interactions (FSI), make neutrino interactions more complicated. To probe the impacts of the nuclear effects, a separate study of FSI and IS is required. A set of variables known as Centre-of-momentum (c.m.) variables ($θ_{c.m.}$ and $E_{c.m.}$) provides a unique approach to isolate the FSI effect with minimal sensitivity to IS. This work presents the importance of c.m. variables in neutrino-induced eta ($η$) meson production in the DUNE near detector. $θ_{c.m.}$ is an important parameter to improve the FSI modeling, while $E_{c.m.}$ helps in isolating high-purity neutrino-Hydrogen events. The study of $η$ production in neutrino interactions helps in understanding the theoretical descriptions of higher resonance states.

hep-ph↗

arXiv2025

Improving target neutron momentum reconstruction using MINER$ν$A $π^0$ data

With the neutrino experiments advancing toward high-precision measurements and greater emphasis on reducing systematic uncertainties, improving the single-pion production models, a major component of the hadronic activity observed in the neutrino oscillation experiments, into the Monte Carlo simulations is crucial. This work presents the predictions of the struck nucleon's Fermi motion by analyzing the charged-current neutral pion production on carbon nucleus in MINER$ν$A. A minimal variation of GENIE and NuWro based on their default models shows an improvement in the prediction of single $π^0$ production. The prediction describes the data more accurately in the higher-momentum tail; however, discrepancies between the predictions and data below the Fermi peak highlight the limitations in current nuclear models used in the Monte Carlo generators.

hep-ph↗

arXiv2024

Probing neutrino-nucleus interaction in DUNE and MicroBooNE

The neutrino experiments utilize heavy nuclear targets to achieve high statistics neutrino-nucleus interaction event rate, which leads to systematic uncertainties in the oscillation parameters due to the nuclear effects and uncertainties in the cross-section. Understanding the interaction of neutrinos with the nucleus becomes crucial in determining the oscillation parameters with high precision. We investigate the uncertainty in quasi-elastic interaction due to nuclear effects by selecting exactly 1 proton, 0 pions, and any number of neutrons in the final state in DUNE and MicroBooNE detectors, and the effects on the neutrino oscillation in the DUNE detector. The calorimetric method with this selection can be used for accurate neutrino energy reconstruction in the quasi-elastic channel where the nuclear effects are inevitable.

hep-ph↗