Detecting CNO solar neutrinos in next-generation xenon dark matter experiments
- Arizona State Univ., Tempe, AZ (United States); DOE/OSTI
- Texas A & M Univ., College Station, TX (United States)
- Purdue Univ., West Lafayette, IN (United States)
We study the prospects for measuring the low-energy components of the solar neutrino flux in future direct dark matter detection experiments. We show that for a depletion of 136Xe by a factor of 1000 relative to its natural abundance, and an extension to electron recoil energies of ~MeV, future xenon experiments with exposure ~1000 ton-yr can detect the carbon-nitrogen-oxygen (CNO) component of the solar neutrino flux at approximately three-sigma significance. A CNO detection will provide important insight into the metallicity of the solar interior. Precise measurement of low-energy solar neutrinos, including as pp, 7Be, and pep components, will further improve constraints on the “neutrino luminosity” of the Sun, thereby providing constraints on alternative sources of energy production. Furthermore, we find that a measurement of Lν/L⊙ of order 1% is possible with the above exposure, improving on current bounds from a global analysis of solar neutrino data by a factor of about 7.
- Research Organization:
- Texas A & M Univ., College Station, TX (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Science (SC)
- Grant/Contract Number:
- SC0010813
- OSTI ID:
- 1611534
- Journal Information:
- Physical Review D, Journal Name: Physical Review D Journal Issue: 4 Vol. 99; ISSN 2470-0010
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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