Bing Guo

Date of Award

Summer 2020

Document Type

Open Access Dissertation


Physics and Astronomy

First Advisor

Sanjib R. Mishra


In the era of high precision oscillation measurements, lead by DUNE and Hyper-K, the Near Detector (ND) faces unprecedented challenges and opportunities. Among the various neutrino events in ND, Coherent meson production plays a special role. It is a non-negligible background to the oscillation signal. However the cross-section models for neutrino induced Coherent meson currently being used are old and imprecise. On the other hand, Coherent meson has a simple experimental signature with minimal nuclear effect making it unique among neutrino-nucleon interactions. Furthermore, the cross section for Coherent meson is the same in neutrino and antineutrino modes. It, thus, potentially could offer the most precise constraints on NuMuBar/NuMu flux ratio. Coherent pion production has been studied in NOMAD experiment, It has resulted in the most precise determination of the process to date. Two different model has been used and compared with an attempt to test PCAC hypothesis. Inspired by NOMAD detector, a straw tube technology based tracking device is proposed for the Near Detector complex of DUNE, it’s performance and advantages are shown, Coherent meson production is also developed in it with validation of it’s application to flux ratio determination.

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