Detection of the Free Neutrino: a Confirmation

Cowan, C.L.; Reines, F.; Harrison, F. B.; Kruse, H.; McGuire, A. D.

doi:10.1016/b978-0-08-006509-0.50008-9

Cited by 105 publications

(208 citation statements)

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“…Later confirmation that the neutrino could both be emitted from a process as well as be the cause of a nuclear disintegration process [6] provided the foundation necessary to establish the neutrino as a fundamental particle in nature and confirmed Fermi's theory that the neutrino could be created and destroyed via processes described by field equations.…”

Section: A Brief Historymentioning

confidence: 88%

A Measurement of Electron Neutrino Appearance in the MINOS Experiment After Four Years of Data

Cavanaugh

2010

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This work attempts to measure or set a limit on sin 2 (2θ 13 ), the parameter which describes ν µ → ν e oscillations. The MINOS detectors at Fermilab are used to perform a search for the oscillations utilizing a beam of ν µ neutrinos created in the NuMI beamline by the collisions of 120 GeV protons with a carbon target. These collisions create π ± and K ± which are focused with magnetic horns, are allowed to decay, and result in a beam of ν µ in the energy range of 1 to 30 GeV. Two functionally identical steel-scintillator calorimetric detectors are utilized to measure the interactions of the generated neutrinos. A detector close to the NuMI beam, located 104 m underground and 1040 m from the target, is used to measure the properties of the neutrino beam, including the flux, composition, and energy spectrum. This information is used in part to generate a predicted spectrum of neutrinos in absence of ν µ → ν e oscillations in the detector located far from the target, at a distance of 705 m underground and 735.5 km from the target. An excess of predicted ν e charged current events in this far detector will be interpreted as ν µ → ν e oscillations, and a measurement of sin 2 (2θ 13 ) will be made using a Feldman-Cousins analysis.The measurement of ν µ → ν e requires the separation of ν e candidates from background events. New reconstruction software was developed with a focus on identifying ν e candidate events in order to reduce systematic errors. The event parameters measured by this software were used as an input to an artificial neutral network event discriminator.The details of this reconstruction software and the other steps of the analysis necessary to iii iv Abstract making the measurement will be discussed.This work builds on a previous measurement made with this experiment. After two years of running with 3.14 × 10 20 protons-on-target (POT), a limit was set at δ CP = 0 for the normal (inverted) hierarchy of sin 2 (2θ 13 ) < 0.29 (0.42) at 90% C.L. This study finds after four years of data with an accumulated intensity of 7 × 10 20 POT that sin 2 (2θ 13 ) < 0.12 (0.20) with δ CP = 0 at 90% C.L. for the normal (inverted) hierarchy.

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Section: A Brief Historymentioning

confidence: 88%

A Measurement of Electron Neutrino Appearance in the MINOS Experiment After Four Years of Data

Cavanaugh

2010

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“…On June of the same year, a telegram was sent to Pauli in which both announced the experimental detection of the neutrino [60]. In 1995, Fred Reines won the Nobel Physics Prize (C. Cowan deceased).…”

Section: The Neutrinomentioning

confidence: 99%

Measurement of the Kaon Production Normalization in the NuMI Target Using Uncontained Charged-Current Muon Neutrino Interactions in the NOvA Far Detector

Sepulveda-Quiroz

2018

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“…Fermi's paper [13], which was published in 1934, unified Pauli's neutrino with Paul Dirac's positron and Werner Heisenberg's neutron-proton model and his theory accurately explained many experimentally observed results. Wang Ganchang first proposed the use of beta capture to experimentally detect neutrinos and in 1956 Clyde Cowan and Frederick Reines published their work stating that they had detected the neutrino [14] [15]. The experiment called for anti-neutrinos created in a nuclear reactor by beta decay that reacted with protons producing neutrons and positrons: ν e + p + → n 0 + e + .…”

Section: History Of Neutrinosmentioning

confidence: 99%

$\mu / \pi$ Separation using Convolutional Neural Networks for the MicroBooNE Charged Current Inclusive Cross Section Measurement

Esquivel

2018

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The purpose of this thesis was to use Convolutional Neural Networks (CNN) to separate µ � s and π � s for use in increasing the acceptance rate of µ � s below the implemented 75cm track length cut in the Charged Current Inclusive (CC-Inclusive) event selection for the CC-Inclusive Cross-Section Measurement. In doing this, we increase acceptance rate for CC-Inclusive events below a specific momentum range. Copyright c � Jessica Nicole Esquivel 2018 All Rights Reserved iv Dedication I dedicate this dissertation to the two most important women in my life; my mom and my wife. Mom, you taught me how to stand up for myself, how to trust in my abilities, and that hard work always pays off. Em, you've been and continue to be my rock, steadying me as I questioned whether or not I could do this, loving me through all the late nights and keeping me sane. Both have been there cheering me on giving me strength and love as I worked towards the hardest thing I've ever accomplished.

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Detection of the Free Neutrino: a Confirmation

Cited by 105 publications

References 0 publications

A Measurement of Electron Neutrino Appearance in the MINOS Experiment After Four Years of Data

A Measurement of Electron Neutrino Appearance in the MINOS Experiment After Four Years of Data

Measurement of the Kaon Production Normalization in the NuMI Target Using Uncontained Charged-Current Muon Neutrino Interactions in the NOvA Far Detector

$\mu / \pi$ Separation using Convolutional Neural Networks for the MicroBooNE Charged Current Inclusive Cross Section Measurement

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