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Characterization of Final State Interaction Strength in Plastic Scintillator by Muon-Neutrino Charged Current Charged Pion Production

Eberly, Brandon (2014) Characterization of Final State Interaction Strength in Plastic Scintillator by Muon-Neutrino Charged Current Charged Pion Production. Doctoral Dissertation, University of Pittsburgh. (Unpublished)

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Precise knowledge of neutrino-nucleus interactions is increasingly important as neutrino oscillation measurements transition into the systematics-limited era.
In addition to modifying the initial interaction, the nuclear medium can scatter and absorb the interaction by-products through final state interactions,
changing the types and kinematic distributions of particles seen by the detector. Recent neutrino pion production data from MiniBooNE is inconsistent with
the final state interaction strength predicted by models and theoretical calculations, and some models fit best to the MiniBooNE data only after removing
final state interactions entirely.

This thesis presents a measurement of $\frac{d\sigma}{dT_{\pi}}$ and $\frac{d\sigma}{d\theta_{\pi\nu}}$ for muon-neutrino charged current charged pion production
in the MINER$\nu$A scintillator tracker. MINER$\nu$A is a neutrino-nucleus scattering experiment installed in the few-GeV NuMI beam line at Fermilab. The analysis is
limited to neutrino energies between 1.5-10 GeV. Dependence on invariant hadronic mass $W$ is studied through two versions of the analysis that impose the
limits $W <$ 1.4 GeV and $W <$ 1.8 GeV. The lower limit on $W$ increases compatibility with the MiniBooNE pion data.

The shapes of the differential cross sections, which depend strongly on the nature of final state interactions, are compared to Monte Carlo and theoretical predictions.
It is shown that the measurements presented in this thesis favor models that contain final state interactions. Additionally, a variety of neutrino-nucleus interaction
models are shown to successfully reproduce the thesis measurements, while simultaneously failing to describe the shape of the MiniBooNE data.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairDytman, Stevendytman@pitt.eduDYTMAN
Committee MemberPaolone,
Committee MemberRuss,
Committee MemberSwanson, Ericswansone@pitt.eduSWANSONE
Committee MemberZentner, Andrewzentner@pitt.eduZENTNER
Date: 28 May 2014
Date Type: Publication
Defense Date: 17 March 2014
Approval Date: 28 May 2014
Submission Date: 26 March 2014
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Number of Pages: 174
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: physics neutrinos nucleus pion final state interactions
Date Deposited: 28 May 2014 20:29
Last Modified: 15 Nov 2016 14:18


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