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Updated: Aug 19, 2026

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 16, 2013
Evidence for nucleosynthesis in the supernova gamma process: universal scaling for p nuclei
T Hayakawa1, N Iwamoto, T Shizuma
1Advanced Photon Research Center, Japan Atomic Energy Research Institute, Kizu, Kyoto 619-0215, Japan.
Abstract:
Analyzing the solar system abundance, we find two universal scaling laws concerning the p and s nuclei. They indicate that the gamma process in supernova (SN) explosions is the most probable origin of the p nuclei that has been discussed with many possible nuclear reactions and sites in about 50 years. In addition, the scalings lead to new concepts: a universality of the gamma process and a new nuclear cosmochronometer. We carry out gamma-process nucleosynthesis calculations for typical core-collapse SN explosion models, and the results satisfy the observed scalings.
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