Electron-antineutrino spectrum from precision measurements of ${}^{144}$Pr-decay

Abstract

The ${}^{144}$Ce -- ${}^{144}$Pr electron antineutrino source is one of the most suitable radiochemical sources for experiments searching for the oscillations of active neutrinos to the light sterile state. In the current work the $\beta$-spectra of ${}^{144}\mathrm{Ce}$ -- ${}^{144}\mathrm{Pr}$ source have been measured by two types of $\beta$-spectrometers based on silicon Si(Li) detectors in order to determine the energy spectrum of electron anti-neutrino emitted in the $\beta$-decay of ${}^{144}\mathrm{Pr}$ nuclei. The nuclear shape factor of the ground state beta transition in ${}^{144}\mathrm{Pr}-{}^{144}\mathrm{Nd}$ has been obtained with high precision: $C(W)=1+(-0.0301\pm 0.0007)W+(-0.101\pm 0.006)W^{-1}$. The reduced cross section for the inverse beta decay reaction on hydrogen for the ${}^{144}\mathrm{Pr}$ electron anti-neutrino source has been defined as $(4.7344\pm 0.0006_{\mathrm{stat}}\pm 0.013_{\mathrm{syst}})\times 10^{-44}\mathrm{c}{\mathrm{m}}^2{\mathrm{decay}}^{-1}$ that provides sufficient sensitivity to search for a sterile neutrino with a mass of $m_4\sim 1$~eV and a mixing angle $Si{n}^2(2{\theta }_{14})\sim 0.005$ using standard disappearance method.

arXiv comment11 pages, 9 figures

References in corpus (28)

• Evidence for Neutrino Oscillations from the Observation of Electron Anti-neutrinos in a Muon Anti-Neutrino Beam
• The Reactor Antineutrino Anomaly
• Improved Predictions of Reactor Antineutrino Spectra
• On the determination of anti-neutrino spectra from nuclear reactors
• Evidence for ${\bar{\nu }}_{\mu }\to {\bar{\nu }}_e$ Oscillations from the LSND Experiment at LAMPF
• Precise quasielastic neutrino/nucleon cross section
• Complete results for five years of GNO solar neutrino observations
• Unexplained Excess of Electron-Like Events From a 1-GeV Neutrino Beam
• Measurement of the response of a Ga solar neutrino experiment to neutrinos from an 37Ar source
• Measurement of the response of a gallium metal solar neutrino experiment to neutrinos from a 51Cr source
• Systematic Uncertainties in the Analysis of the Reactor Neutrino Anomaly
• Updated MiniBooNE Neutrino Oscillation Results with Increased Data and New Background Studies
• Results from the Baksan Experiment on Sterile Transitions (BEST)
• High precision analytical description of the allowed $\beta$ spectrum shape
• Model-Independent ${\bar{\nu }}_e$ Short-Baseline Oscillations from Reactor Spectral Ratios
• Sterile Neutrinos or Flux Uncertainties? - Status of the Reactor Anti-Neutrino Anomaly
• A proposed search for a fourth neutrino with a PBq antineutrino source
• Reevaluating reactor antineutrino spectra with new measurements of the ratio between ${}^{235}$U and ${}^{239}$Pu $\beta$ spectra
• Stereo neutrino spectrum of 235U fission rejects sterile neutrino hypothesis
• Fuel-composition dependent reactor antineutrino yield at RENO
• Extraction of the ${}^{235}$U and ${}^{239}$Pu Antineutrino Spectra at Daya Bay
• First Measurement of Monoenergetic Muon Neutrino Charged Current Interactions
• BEST Impact on Sterile Neutrino Hypothesis
• Search for Neutrino-Induced Neutral Current $\Delta$ Radiative Decay in MicroBooNE and a First Test of the MiniBooNE Low Energy Excess Under a Single-Photon Hypothesis
• Radiative Correction to the anti-nu_e (nu_e) Spectrum in beta-Decay
• An accurate evaluation of electron (anti-)neutrino scattering on nucleons
• Experimental Parameters for a Cerium 144 Based Intense Electron Antineutrino Generator Experiment at Very Short Baselines
• Precision measurement of ${}^{210}$Bi $\beta$-spectrum