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Demonstration of MeV-scale physics in liquid argon time projection chambers using ArgoNeuT
Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
Yale Univ, New Haven, CT 06520 USA.
Univ Texas Arlington, Arlington, TX 76019 USA.
Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
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2019 (English)In: Physical Review D: covering particles, fields, gravitation, and cosmology, ISSN 2470-0010, E-ISSN 2470-0029, Vol. 99, no 1, article id 012002Article in journal (Refereed) Published
Abstract [en]

MeV-scale energy depositions by low-energy photons produced in neutrino-argon interactions have been identified and reconstructed in ArgoNeuT liquid argon time projection chamber (LArTPC) data. ArgoNeuT data collected on the NuMI beam at Fermilab were analyzed to select isolated low-energy depositions in the TPC volume. The total number, reconstructed energies, and positions of these depositions have been compared to those from simulations of neutrino-argon interactions using the FLUKA Monte Carlo generator. Measured features are consistent with energy depositions from photons produced by deexcitation of the neutrino's target nucleus and by inelastic scattering of primary neutrons produced by neutrino-argon interactions. This study represents a successful reconstruction of physics at the MeV scale in a LArTPC, a capability of crucial importance for detection and reconstruction of supernova and solar neutrino interactions in future large LArTPCs.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2019. Vol. 99, no 1, article id 012002
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Subatomic Physics Astronomy, Astrophysics and Cosmology
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URN: urn:nbn:se:uu:diva-375223DOI: 10.1103/PhysRevD.99.012002ISI: 000455060900001OAI: oai:DiVA.org:uu-375223DiVA, id: diva2:1283830
Available from: 2019-01-30 Created: 2019-01-30 Last updated: 2019-01-30Bibliographically approved

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