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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.


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 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]


Measurement of Single Positive Pion Production in Neutrino Neutral Current Interactions in the ND280 Detector and Particle Identification with the Fine Grained Detector at T2K.

Measurement of Single Positive Pion Production in Neutrino Neutral Current Interactions in the ND280 Detector and Particle Identification with the Fine Grained Detector at T2K.
Author: Caio Augusto Pelegrina Del Bianco Licciardi
Publisher:
Total Pages:
Release: 2015
Genre:
ISBN:

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