arXiv subjects

A Giri

Publications and source records attributed to A Giri.

5 recordsLinked to original sources

arXiv2025

Centre-of-momentum frame analysis of $\eta$ 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 ($\theta_{c.m.}$ 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 ($\eta$) meson production in the DUNE near detector. $\theta_{c.m.}$ is an important parameter to improve the FSI modeling, while $E_{c.m.}$ helps in isolating high-purity neutrino-Hydrogen events. The study of $\eta$ production in neutrino interactions helps in understanding the theoretical descriptions of higher resonance states.

hep-ph↗

arXiv2024

Improving target neutron momentum reconstruction using MINER$\nu$A $\pi^0$ 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$\nu$A. A minimal variation of GENIE and NuWro based on their default models shows an improvement in the prediction of single $\pi^0$ 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↗

arXiv2024

Comparative Analysis of Single Charged Particle Production in Proton-Carbon Interactions at High Energies

The generation of charged pions, kaons, and protons from proton beam incident on Carbon at 31 GeV/c is calculated and compared with the results of the NA61/SHINE experiment. Predictions of the single charged particle yield by proton off the Carbon target is calculated using the Giessen Boltzmann-Uehling-Uhlenbeck (GiBUU) model and compared with the recent data of the EMPHATIC hadron scattering and production experiment for incident proton beam energies of 20, 30, and 120 GeV/c within $\pm$20 mrad with respect to the beam particle. We present the analysis for the single and double differential cross-sections for the produced particles at various scattering angles and conduct a comprehensive comparison with the experimental data. These studies show significant agreement with the measured data.

hep-ex↗

arXiv2015

Effect of Temperature on the Complexity of Solid Argon System

We study the measure of complexity in solid Argon system from the time series data of kinetic energy of single Argon atoms at different equilibrated temperatures. To account the inherent multi-scale dependence of the complexity, the multi-scale entropy of the time series of kinetic energy of individual Argon atoms are computed at different equilibrated temperatures. The multi-scale entropy study reveals that the dynamics of an atom becomes more complex at higher temperatures and the result corroborates well with the variation of the pair correlation function of the atoms in the solid Argon crystal. Also, we repeat the multi-scale entropy analysis for program generated Levy noise time series and for time series data obtained from the outcomes of exponential decay with noise dx(t) = -x(t) dt + sigma dB(t) (Langevin equation). Our study establishes that the scale dependence of sample entropy for time series of kinetic energy of individual atoms in solid Argon system has similar tendency as that of Levy noise time series and the outcomes of exponential decay with noise (Langevin equation).

physics.data-an↗