Nucleosynthesis in Supernovae and Neutrino Oscillation(Current Topics)

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Other Title
  • 超新星での元素合成とニュートリノ振動(最近の研究から)
  • 超新星での元素合成とニュートリノ振動
  • チョウシンセイ デ ノ ゲンソ ゴウセイ ト ニュートリノ シンドウ

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Abstract

Neutrino-nucleus reaction processes play important roles in synthesis of ^7Li, ^<11>B,^<138>La, ^<180>Ta and other elements in explosive environments realized in supernovae. We have constructed new shell model Hamiltonians based on recent progress of physics in unstable nuclei near the neutron drip-line. The spin responses of nuclei are found to be remarkably improved by the new Hamiltonians. We then applied these Hamiltonians to calculate the neutrino-nucleus reaction cross sections, and obtained more precise and reliable theoretical estimate of supernova nucleosynthesis of ^7Li, ^<11>B, etc. including the neutrino processes. Finally we propose a new method to determine unknown neutrino oscillation parameters, namely the mixing angle θ_<13> and the mass hierarchy, by making use of strong dependence of the yields of ^7Li and <11>B on these parameters.

Journal

  • Butsuri

    Butsuri 67 (1), 49-54, 2012-01-05

    The Physical Society of Japan

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