Measurement of ${}^{nat}$Pb(${\nu }_e$,X$n$) production with a stopped-pion neutrino source

Abstract

Using neutrinos produced at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL), the COHERENT collaboration has studied the Pb(${\nu }_e$,X$n$) process with a lead neutrino-induced-neutron (NIN) detector. Data from this detector are fit jointly with previously collected COHERENT data on this process. A combined analysis of the two datasets yields a cross section that is $0.29_{-0.16}^{+0.17}$ times that predicted by the MARLEY event generator using experimentally-measured Gamow-Teller strength distributions, consistent with no NIN events at 1.8$\sigma$. This is the first inelastic neutrino-nucleus process COHERENT has studied, among several planned exploiting the high flux of low-energy neutrinos produced at the SNS.

arXiv comment11 pages, 9 figures, version accepted by Phys. Rev. D

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• Theoretical tools for neutrino scattering: interplay between lattice QCD, EFTs, nuclear physics, phenomenology, and neutrino event generators
• Demonstration of neutron identification in neutrino interactions in the MicroBooNE liquid argon time projection chamber
• Supernova electron-neutrino interactions with xenon in the nEXO detector
• Supernova Detection at SNOLAB