Capture of Solar and Higher-Energy Neutrinos by Iodine 127

Abstract

We discuss and improve a recent treatment of the absorption of solar neutrinos by ${}^{127}$I, in connection with a proposed solar neutrino detector. With standard-solar-model fluxes and an in-medium value of -1.0 for the axial-vector coupling constant $g_A$, we obtain a ${}^8$B-neutrino cross section of 3.3$\times 10^{-42}$, about 50\% larger than in our previous work, and a ${}^7$Be cross section that is less certain but nevertheless also larger than before. We then apply the improved techniques to higher incoming energies that obtain at the LAMPF beam dump, where an experiment is underway to finalize a calibration of the ${}^{127}$I with electron neutrinos from muon decay. We find that forbidden operators, which play no role in solar-neutrino absorption, contribute nonnegligibly to the LAMPF cross section, and that the preliminary LAMPF mean value is significantly larger than our prediction.

arXiv comment13 pages + 3 postscript figures (attached), in RevTex 3 , submitted to Phys. Rev. C

References in corpus (1)

• Do Solar Neutrino Experiments Imply New Physics?

Cited by in corpus (13)

• From eV to EeV: Neutrino Cross Sections Across Energy Scales
• Spin-Dependent Neutralino-Nucleus Scattering for $A\sim 127$ Nuclei
• Approximate Treatment of Lepton Distortion in Charged-Current Neutrino Scattering from Nuclei
• Renormalization of the weak hadronic current in the nuclear medium
• COHERENT 2018 at the Spallation Neutron Source
• Theoretical direct WIMP detection rates for transitions to excited states
• Measurement of the Electron-Neutrino Charged-Current Cross Sections on ${}^{127}$I with the COHERENT NaI$\nu$E detector
• Measurement of the cross section for the reaction 127I(neutrino,electron)127Xe_(bound states) with neutrinos from the decay of stopped muons
• Theoretical direct WIMP detection rates for transitions to nuclear excited states
• Inelastic WIMP-nucleus scattering to the first excited state in ${}^{125}$Te
• What Can Be Learned with an Iodine Solar-Neutrino Detector?
• A Xenon Solar Neutrino Detector
• Cross sections of solar neutrino capture by 127I nuclei and Gamow Teller resonances