Constraining the leading weak axial two-body current by SNO and Super-K

Journal Article · Thu Oct 24 04:00:00 EDT 2002 · Physical Review C

OSTI ID:832949

Chen, Jiunn-Wei ^[1]; Heeger, Karsten M; Robertson, R.G. Hamish

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1. LBNL Library

We analyze the Sudbury Neutrino Observatory (SNO) and Super-Kamiokande (SK) data on charged current (CC), neutral current (NC) and neutrino electron elastic scattering (ES) reactions to constrain the leading weak axial two-body current parameterized by L{sub 1A}. This two-body current is the dominant uncertainty of every low energy weak interaction deuteron breakup process, including SNO's CC and NC reactions. Our method shows that the theoretical inputs to SNO's determination of the CC and NC fluxes can be self-calibrated, be calibrated by SK, or be calibrated by reactor data. The only assumption made is that the total flux of active neutrinos has the standard {sup 8}B spectral shape (but distortions in the electron neutrino spectrum are allowed). We show that SNO's conclusion about the inconsistency of the no-flavor-conversion hypothesis does not contain significant theoretical uncertainty, and we determine the magnitude of the active solar neutrino flux.

• Research Organization: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
• Sponsoring Organization: USDOE Director. Office of Science. Office of High Energy and Nuclear Physics. Division of Nuclear Physics. Grants DOE/ER/40762-213 and DE-FG03-97ER41020 (US)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 832949
• Report Number(s): LBNL--52174
• Journal Information: Physical Review C, Journal Name: Physical Review C Journal Issue: 2 Vol. 6702
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHARGED CURRENTS
DEUTERONS
ELASTIC SCATTERING
ELECTRON NEUTRINOS
ELECTRONS
HYPOTHESIS
NEUTRAL CURRENTS
NEUTRINOS
SHAPE
SOLAR NEUTRINOS
SUDBURY NEUTRINO OBSERVATORY
WEAK AXIAL TWO-BODY CURRENT L1A SOLAR NEUTRINO DATA SNO SK
WEAK INTERACTIONS