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Relative Cross Section Measurment of Inclusive Charged Current Multiple Pion Production to Inclusive Charged Current from Muon Neutrinos at the Near Detector of the T2K Experiment

Relative Cross Section Measurment of Inclusive Charged Current Multiple Pion Production to Inclusive Charged Current from Muon Neutrinos at the Near Detector of the T2K Experiment
Author: Scott Davis
Publisher:
Total Pages: 187
Release: 2014
Genre:
ISBN:

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The Tokai-to-Kamiokande (T2K) experiment is an off-axis, long baseline neutrino oscillation experiment based in Japan. One of the largest sources of systematic uncertainty in the oscillation analysis is the uncertainty on neutrino cross sections. In this thesis, we use the [pi]0 detector (P0D) of the T2K Near Detector to measure one cross section of muon neutrinos. The P0D is a scintillator based detector with a precision water target which allows for a measurement with water and without water. In particular, we measured the relative cross section of charged current multiple pion production to inclusive charged current production. The analysis is performed with a multi-variate template fit using two Monte Carlo neutrino generators, NEUT and GENIE. The relative ratio for NEUT(GENIE) is 0.126 ± 0.024+[0.022-0.021] (0.100 ± 0.018 [+0.018-0.017]) for the Water-In configuration and 0.104 ± 0.029 [+0.030-0.035] (0.121 ± 0.021[+0.034-0.036]) for the Water-Out configuration. The prospects for a precision water cross section measurement are also discussed.


Measurement of the Muon Neutrino Charged Current Interactions and the Muon Neutrino Single Pion Cross Section on CH Using the T2K Near Detector

Measurement of the Muon Neutrino Charged Current Interactions and the Muon Neutrino Single Pion Cross Section on CH Using the T2K Near Detector
Author: Raquel Castillo Fernández
Publisher:
Total Pages: 225
Release: 2015
Genre:
ISBN: 9788449055034

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El experimento T2K es un experimento de neutrinos de largo recorrido que utiliza un haz casi puro the neutrinos muónicos. El objetivo principal del experimento es a medida de los parámetros de oscilación del neutrino muónicos. Para conseguir éste objetivo, T2K necesita una rigurosa predicción del índice de interacciones en el detector lejano, Super-KamiokaNDE. El detector cercano de T2K, ND280, calcula el índice de interacciones y estima el número de eventos en el detector lejano. Las interacciones de neutrino muónico de corriente cargada en el detector cercano (ND280) son usadas para predecir el índice de eventos en el detector lejano (Super-KamiokaNDE). Para una mejor restricción de los parámetros de sección eficaz, los cuales dominan el análisis junto con las incertezas de la prediccion del flujo, categorizamos los eventos seleccionados en tres grupos de acuerdo con el número de piones en el estado final. Estas tres categorías permiten un mejor ajuste de la señal del canal de oscilación (Corriente Cargada Quasielástica) y el principal ruído en oscilaciones (Corriente Cargada de 1 Pión Cargado). Actuales y futuros experimentos de neutrinos están limitados por las incertezas en las secciones eficaces de neutrinos. Los modelos actuales de sección eficaz están en tension con los datos experimentales en algunos rangos energéticos. Esto hace que sea critico estudiar secciones eficaces de neutrino--nucleo en todos los canales de interacción posibles. La producción the un solo pión en interacciones de neutrino muónico de corriente cargada es uno de los principales canales en tensión con los modelos. Como segunda contribución, presentamos el cálculo de producción the un solo pión en interacciones de neutrino muónico de corriente cargada usando un enfoque indepenediente del modelo explorando la capacidad total del detector ND280 para establecer las distribuciones cinemáticas del evento. La mejore del conocimiento de las interacciones, y en concreto del canal de producción de un sólo pión, permitirá la reducción de las incertidumbres sistemáticas en el análisis de oscilaciones.


The Physics of Neutrino Interactions

The Physics of Neutrino Interactions
Author: M. Sajjad Athar
Publisher: Cambridge University Press
Total Pages: 975
Release: 2020-12-03
Genre: Science
ISBN: 1108489060

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A comprehensive introduction to neutrino physics with detailed description of neutrinos and their properties.


Muon Neutrino Charged Current Single Pion Production on Various Targets in the MINERvA Detector

Muon Neutrino Charged Current Single Pion Production on Various Targets in the MINERvA Detector
Author: Aaron Bercellie
Publisher:
Total Pages: 795
Release: 2022
Genre:
ISBN:

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"Measurements of neutrino oscillation parameters at accelerator-based experiments require precise knowledge of neutrino interaction cross sections. A significant fraction of neutrino interactions observed in these experiments produce single charged pions. While single charged pion production has been measured on hydrocarbon and water, few precise measurements exist for heavier targets, and there are no high statistics measurements that directly compare pion production on different targets. This thesis measures differential cross sections of muon neutrino charged current single charged pion production with no other mesons in the final state in a neutrino beam with a mean energy of ~ 6 GeV. The pion production is studied on targets of scintillator, carbon, water, iron, and lead at MINERvA, a neutrino cross section experiment located in the NuMI beamline at Fermilab. These measured cross sections are differential in [mu]- and [pi]+ kinematics. A strong suppression of low Q2 and an enhancement of low T[Pi] are observed relative to commonly used neutrino interaction models in both the light and heavy nuclear targets. Incorporation of these observed effects in future neutrino oscillation experiments will improve their ability to measure energy of neutrino interactions, and therefore measure the parameters governing neutrino oscillations."--Page xii


Measurement of the Charged Current Muon Neutrino Differential Cross Section on Scintillator with Zero Pions in the Final State with the T2K On/off-axis Near Detectors

Measurement of the Charged Current Muon Neutrino Differential Cross Section on Scintillator with Zero Pions in the Final State with the T2K On/off-axis Near Detectors
Author: Andrew Bruce Cudd
Publisher:
Total Pages: 252
Release: 2020
Genre: Electronic dissertations
ISBN: 9781658436366

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The Tokai to Kamioka (T2K) is a long-baseline neutrino oscillation experiment in Japan producing precise measurements of neutrino oscillations and neutrino interactions with nuclear targets. T2K utilizes a muon (anti-)neutrino beam produced at the J-PARC proton accelerator facility which is measured at a suite of near detectors, ND280 and INGRID, and the far detector, Super-Kamiokande. One of the dominant systematic uncertainties for the oscillation analysis is from the uncertainty in neutrino interaction modeling with complex nuclei, which will eventually become the limiting uncertainty for the next generation of neutrino oscillation experiments. Therefore measurements of neutrino cross sections on nuclear targets is essential for understanding how to model these complicated nuclear interactions. This thesis presents a novel neutrino cross section measurement utilizing both of the T2K near detectors, ND280 and INGRID, in a joint statistical fit. Because the T2K near detectors are exposed to neutrinos from the same beamline, the uncertainties in the neutrino flux prediction will be correlated. This fact combined with the different neutrino energy spectra seen at each detector will allow for some separation of flux and cross section effects, and presents an opportunity to study the neutrino cross section as a function of energy using the same neutrino beam. This analysis is the first cross section measurement on T2K to use samples from multiple detectors in the same beamline. This thesis presents a description of the statistical analysis framework, the event selection, the treatment of systematic uncertainties, and the extracted muon neutrino CC0pi double differential cross section in bins of muon kinematics for ND280 and INGRID, including the correlations between the detectors.


Measurement of Muon Neutrino Charged Current Single $\pi^0$ Production on Hydrocarbon Using MINERvA.

Measurement of Muon Neutrino Charged Current Single $\pi^0$ Production on Hydrocarbon Using MINERvA.
Author:
Publisher:
Total Pages: 279
Release: 2017
Genre:
ISBN:

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A sample of charged-current single pion production events for the semi- exclusive channel [nu]æ + CH 2!æ-[pi]0 + nucleon(s) has been obtained using neutrino exposures of the MINERvA detector. Differential cross sections for muon momentum, muon production angle, pion momentum, pion production angle, and four-momentum transfer square Q2 are reported and are compared to a GENIE-based simulation. The cross section versus neutrino energy is also re- ported. The effects of pion final-state interactions on these cross sections are investigated. The effect of baryon resonance suppression at low Q2 is examined and an event re-weight used by two previous experiments is shown to improve the data versus simulation agreement. The differential cross sections for Q2 for E[nu]