An inclusive measurement of the cross section of the electron neutrino charged-current interaction on $^{127}$I can probe the quenching of g$_{A}$, the axial-vector coupling constant, which affects the rate of neutrinoless double beta decays, and contribute to the design of next-generation solar neutrino detectors. At the Los Alamos Meson Production Facility (LAMPF), an exclusive measurement of the flux-averaged cross section was measured to be [2.84 $\\pm$ 0.91 (stat) $\\pm$ 0.25 (syst)] $\\times\\; 10^{\\boldsymbol{-}40}$ cm$^2$ [1]. This measurement has a large statistical error and only counts the number of {$^{127}$Xe} in the bound state. To make a first measurement of the inclusive cross section with lower statistical uncertainties, a 185-kg NaI[Tl] prototype detector, NaI$\\upnu$E-185, was deployed by the COHERENT collaboration at the Spallation Neutron Source. To study electron neutrino charged-current interaction detection efficiencies, simulations were performed. To explore new approaches of steady state background rejection, a convolutional neural network (CNN) classifier and a XGBoost based classifier were developed. The best 4-class model, tested with simulations, achieved a 50.2\\% classification accuracy. To address the non-linearity of NaI[Tl] crystals at high energies, calibrations using Michel positrons from stopped muon decays were performed. The cross section measurement was done through probability density function (PDF) fitting. The flux-averaged total inclusive cross section, excluding forbidden transitions, was measured to be [9.2 + 2.1 $-$ 1.8 (stat+syst)] $\\times\\; 10^{\\boldsymbol{-}40}$ cm$^2$, rejecting the null hypothesis by 5.8 $\\sigma$.
[1] J. R. Distel, B. T. Cleveland, K. Lande, C. K. Lee, P. S. Wildenhain, G. E. Allen, and R. L. Burman. Measurement of the cross section for the reaction $^{127}\\mathrm{I}({\\ensuremath{\\nu}}_{e},{e}^{\\ensuremath{-}})^{127}{\\mathrm{Xe}}_{\\textrm{bound states}}$ with neutrinos from the decay of stopped muons, Phys. Rev. C, 68:054613, Nov 2003.
","abstract_html":"<p>An inclusive measurement of the cross section of the electron neutrino charged-current interaction on 127I can probe the quenching of gA, the axial-vector coupling constant, which affects the rate of neutrinoless double beta decays, and contribute to the design of next-generation solar neutrino detectors. At the Los Alamos Meson Production Facility (LAMPF), an exclusive measurement of the flux-averaged cross section was measured to be [2.84 $\\pm$ 0.91 (stat) $\\pm$ 0.25 (syst)] \\times 10\\boldsymbol{-}40 cm2 [1]. This measurement has a large statistical error and only counts the number of {127Xe} in the bound state. To make a first measurement of the inclusive cross section with lower statistical uncertainties, a 185-kg NaI[Tl] prototype detector, NaI$\\upnu$E-185, was deployed by the COHERENT collaboration at the Spallation Neutron Source. To study electron neutrino charged-current interaction detection efficiencies, simulations were performed. To explore new approaches of steady state background rejection, a convolutional neural network (CNN) classifier and a XGBoost based classifier were developed. The best 4-class model, tested with simulations, achieved a 50.2\\% classification accuracy. To address the non-linearity of NaI[Tl] crystals at high energies, calibrations using Michel positrons from stopped muon decays were performed. The cross section measurement was done through probability density function (PDF) fitting. The flux-averaged total inclusive cross section, excluding forbidden transitions, was measured to be [9.2 + 2.1 $-$ 1.8 (stat+syst)] \\times 10\\boldsymbol{-}40 cm2, rejecting the null hypothesis by 5.8 σ.</p><p>[1] J. R. Distel, B. T. Cleveland, K. Lande, C. K. Lee, P. S. Wildenhain, G. E. Allen, and R. L. Burman. Measurement of the cross section for the reaction 127I({\\ensuremath{\\nu}}e,{e}\\ensuremath{-})127{Xe}\\textrm{bound states} with neutrinos from the decay of stopped muons, Phys. Rev. C, 68:054613, Nov 2003.</p>","abstract_has_math":true,"creators":["An, Peibo"],"institution":null,"degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Barbeau, Phillip S"],"committee_chairs":[],"committee_members":[],"year":2022,"date_issued":"2022","date_published":"2022","updated_at":"2026-07-24T02:07:03Z","subjects":["Physics","Nuclear physics and radiation","Particle physics","Cross Section Measurement","Machine Learning Application in Physics","Neutrinos"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/10161/26822","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Barbeau, Phillip S"]},{"key":"dc:creator","label":"Author","values":["An, Peibo"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2023-03-28T21:41:48Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2023-03-28T21:41:48Z"]},{"key":"dc:date.issued","label":"Date","values":["2022"]},{"key":"dc:type","label":"Dc Type","values":["Dissertation"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Physics","Nuclear physics and radiation","Particle physics","Cross Section Measurement","Machine Learning Application in Physics","Neutrinos"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/10161/26822"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["An inclusive measurement of the cross section of the electron neutrino charged-current interaction on $^{127}$I can probe the quenching of g$_{A}$, the axial-vector coupling constant, which affects the rate of neutrinoless double beta decays, and contribute to the design of next-generation solar neutrino detectors. At the Los Alamos Meson Production Facility (LAMPF), an exclusive measurement of the flux-averaged cross section was measured to be [2.84 $\\pm$ 0.91 (stat) $\\pm$ 0.25 (syst)] $\\times\\; 10^{\\boldsymbol{-}40}$ cm$^2$ [1]. This measurement has a large statistical error and only counts the number of {$^{127}$Xe} in the bound state. To make a first measurement of the inclusive cross section with lower statistical uncertainties, a 185-kg NaI[Tl] prototype detector, NaI$\\upnu$E-185, was deployed by the COHERENT collaboration at the Spallation Neutron Source. To study electron neutrino charged-current interaction detection efficiencies, simulations were performed. To explore new approaches of steady state background rejection, a convolutional neural network (CNN) classifier and a XGBoost based classifier were developed. The best 4-class model, tested with simulations, achieved a 50.2\\% classification accuracy. To address the non-linearity of NaI[Tl] crystals at high energies, calibrations using Michel positrons from stopped muon decays were performed. The cross section measurement was done through probability density function (PDF) fitting. The flux-averaged total inclusive cross section, excluding forbidden transitions, was measured to be [9.2 + 2.1 $-$ 1.8 (stat+syst)] $\\times\\; 10^{\\boldsymbol{-}40}$ cm$^2$, rejecting the null hypothesis by 5.8 $\\sigma$.
[1] J. R. Distel, B. T. Cleveland, K. Lande, C. K. Lee, P. S. Wildenhain, G. E. Allen, and R. L. Burman. Measurement of the cross section for the reaction $^{127}\\mathrm{I}({\\ensuremath{\\nu}}_{e},{e}^{\\ensuremath{-}})^{127}{\\mathrm{Xe}}_{\\textrm{bound states}}$ with neutrinos from the decay of stopped muons, Phys. Rev. C, 68:054613, Nov 2003.
"]},{"key":"dc:title","label":"Title","values":["Studies of the Electron Neutrino Charged-current Interaction on $^{127}$I"]}]}],"canonical_facts":{"dc:contributor.advisor":["Barbeau, Phillip S"],"dc:creator":["An, Peibo"],"dc:date.accessioned":["2023-03-28T21:41:48Z"],"dc:date.available":["2023-03-28T21:41:48Z"],"dc:date.issued":["2022"],"dc:description.abstract":["An inclusive measurement of the cross section of the electron neutrino charged-current interaction on $^{127}$I can probe the quenching of g$_{A}$, the axial-vector coupling constant, which affects the rate of neutrinoless double beta decays, and contribute to the design of next-generation solar neutrino detectors. At the Los Alamos Meson Production Facility (LAMPF), an exclusive measurement of the flux-averaged cross section was measured to be [2.84 $\\pm$ 0.91 (stat) $\\pm$ 0.25 (syst)] $\\times\\; 10^{\\boldsymbol{-}40}$ cm$^2$ [1]. This measurement has a large statistical error and only counts the number of {$^{127}$Xe} in the bound state. To make a first measurement of the inclusive cross section with lower statistical uncertainties, a 185-kg NaI[Tl] prototype detector, NaI$\\upnu$E-185, was deployed by the COHERENT collaboration at the Spallation Neutron Source. To study electron neutrino charged-current interaction detection efficiencies, simulations were performed. To explore new approaches of steady state background rejection, a convolutional neural network (CNN) classifier and a XGBoost based classifier were developed. The best 4-class model, tested with simulations, achieved a 50.2\\% classification accuracy. To address the non-linearity of NaI[Tl] crystals at high energies, calibrations using Michel positrons from stopped muon decays were performed. The cross section measurement was done through probability density function (PDF) fitting. The flux-averaged total inclusive cross section, excluding forbidden transitions, was measured to be [9.2 + 2.1 $-$ 1.8 (stat+syst)] $\\times\\; 10^{\\boldsymbol{-}40}$ cm$^2$, rejecting the null hypothesis by 5.8 $\\sigma$.
[1] J. R. Distel, B. T. Cleveland, K. Lande, C. K. Lee, P. S. Wildenhain, G. E. Allen, and R. L. Burman. Measurement of the cross section for the reaction $^{127}\\mathrm{I}({\\ensuremath{\\nu}}_{e},{e}^{\\ensuremath{-}})^{127}{\\mathrm{Xe}}_{\\textrm{bound states}}$ with neutrinos from the decay of stopped muons, Phys. Rev. C, 68:054613, Nov 2003.
"],"dc:identifier.uri":["https://hdl.handle.net/10161/26822"],"dc:subject":["Physics","Nuclear physics and radiation","Particle physics","Cross Section Measurement","Machine Learning Application in Physics","Neutrinos"],"dc:title":["Studies of the Electron Neutrino Charged-current Interaction on $^{127}$I"],"dc:type":["Dissertation"]},"updated_at":"2026-07-24T02:07:03Z"}