Matter-enhanced antineutrino flavor transformation and supernova nucleosynthesis

Journal Article · Sat Jul 15 04:00:00 EDT 1995 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.52.656· OSTI ID:69554

Qian, Y ^[1]; Fuller, G M ^[2]

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1. Institute for Nuclear Theory, NK-12, University of Washington, Seattle, Washington 98195 (United States)
2. Department of Physics, University of California, San Diego, La Jolla, California 92093-0319 (United States)

Matter-enhanced antineutrino flavor transformation between {bar {nu}}{sub {ital e}} and {bar {nu}}{sub {mu}({tau})} can occur in supernovas if the vacuum masses for these species satisfy {ital m}{sub @g}{bar n}{sub {ital e}}{gt}{ital m}{sub @g}{bar n}{sub {mu}({tau})}. For {delta}{ital m}{sup 2}{gt}1 eV{sup 2}, such flavor transformation can affect the electron fraction {ital Y}{sub {ital e}} in the neutrino-heated supernova ejecta. We point out that such flavor transformations will not drive {ital Y}{sub {ital e}}{gt}0.5 at the {ital r}-process nucleosynthesis epoch in the best available supernova model for such nucleosynthesis. Consequently, there is no obvious conflict between the matter-enhanced antineutrino flavor transformation {bar {nu}}{sub {ital e}{parallel}}{bar {nu}}{sub {mu}({tau})} and {ital r}-process nucleosynthesis in the neutrino-heated supernova ejecta.

• Research Organization: University of Washington
• DOE Contract Number: FG06-90ER40561
• OSTI ID: 69554
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 2 Vol. 52; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANTINEUTRINOS
MATTER
NUCLEOSYNTHESIS
R PROCESS
SUPERNOVAE
TRANSFORMATIONS