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Single Charged Pion Production by Muon Neutrinos in the MINERvA Detector Using the NuMI Beam

Messerly, Benjamin (2020) Single Charged Pion Production by Muon Neutrinos in the MINERvA Detector Using the NuMI Beam. Doctoral Dissertation, University of Pittsburgh. (Unpublished)

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The next generation of long baseline neutrino oscillation experiments (DUNE, Hyper-K) aims to conclusively answer the outstanding questions in neutrino oscillation physics, including the nature of lepton CP-symmetry violation and the validity of the three-neutrino paradigm. The success of this program relies on excellent beam flux simulation and precisely-known cross sections for all neutrino-nucleus scattering processes. Currently, uncertainties on these models are large, and experiments such as MINERvA, located in the NuMI neutrino beamline at Fermilab, are dedicated to reducing them. This thesis makes improvements both to flux simulation models—via reduction in hadron focusing uncertainties in the G4NuMI simulation—and to cross section knowledge—via a pion production cross section measurement in the critical “transition region” between resonance and deep inelastic scattering. The cross section measurement performed is of muon neutrino charged current single charged pion production on hydrocarbon in the MINERvA detector and at mean neutrino energy of 6 GeV. The cross section is high-statistics, minimally-model dependent, and measured as a function of several muon, pion, and event-wide variables, including the first measurement of an invariant hadronic mass-like variable in the positive pion channel. Results are compared to the GENIE event generator, and found to broadly agree, though outstanding discrepancies remain in low four-momentum transfer squared and pion kinematics.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
Messerly, Benjaminbam132@pitt.edu0000-0002-1388-8737
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairPaolone,
Committee MemberCoalson,
Committee MemberSwanson,
Committee MemberWood-Vasey,
Committee MemberDytman,
Date: 16 January 2020
Date Type: Publication
Defense Date: 3 December 2019
Approval Date: 16 January 2020
Submission Date: 4 December 2019
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Number of Pages: 250
Institution: University of Pittsburgh
Schools and Programs: Dietrich School of Arts and Sciences > Physics
Degree: PhD - Doctor of Philosophy
Thesis Type: Doctoral Dissertation
Refereed: Yes
Uncontrolled Keywords: numi pion minerva nucleus neutrino cross section
Date Deposited: 16 Jan 2020 19:13
Last Modified: 16 Jan 2020 19:13

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