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arXiv 0809.3240nucl-exastro-phnucl-th
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现代~ 3 He(α,γ)~ 7 Be数据的评价

Evaluation of Modern 3He(alpha,gamma)7Be Data

Richard H. Cyburt, Barry Davids

摘要:

在太阳和早期宇宙中,3 He(α,γ)7 Be反应起着关键作用。该反应的速率是计算大爆炸核合成(BBN)中原始7 Li丰度和太阳中微子通量所需的最不确定的核输入。利用最近的几个高精度的实验,我们分析现代3 He(α,γ)7 Be数据使用一个强大的和最小的模型依赖的方法能够处理不一致的数据集占主导地位的系统,而不是统计误差。在68.3(95.4)%置信水平下,我们发现S34(0)=0.580 pm 0.043(0.054)keVb。

英文摘要:

In both the Sun and the early universe, the 3He(alpha,gamma)7Be reaction plays a key role. The rate of this reaction is the least certain nuclear input needed to calculate both the primordial 7Li abundance in big bang nucleosynthesis (BBN) and the solar neutrino flux. Taking advantage of several recent highly precise experiments, we analyse modern 3He(alpha,gamma)7Be data using a robust and minimally model dependent approach capable of handling discrepant data sets dominated by systematic rather than statistical errors. We find S34(0)=0.580 pm 0.043(0.054) keV b at the 68.3(95.4)% confidence level.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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