arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1601.01729astro-ph.HEhep-phnucl-th
收藏

核子奇异性在超新星爆炸中的作用

The Role of Nucleon Strangeness in Supernova Explosions

T. J. Hobbs, Mary Alberg, Gerald A. Miller

摘要:

最近的流体动力学模拟超新星(SN)的演变强调了一个彻底的控制微观物理的重要性,负责这样的内部过程,如中微子加热。特别是,有人提出,中微子-核子弹性截面的修改可能在产生成功的超新星爆炸中发挥至关重要的作用。这种修正的一个可能来源是核子的奇异螺旋度含量$Δs$的非零值。然而,在目前的分析中,我们表明,在过去的十年中,理论和实验的进展已经提出了一个相对较小的等$Δs$,使其唯一的效果是不足以提供物理导致超新星爆炸。

英文摘要:

Recent hydrodynamical simulations of supernova (SN) evolution have highlighted the importance of a thorough control over microscopic physics responsible for such internal processes as neutrino heating. In particular, it has been suggested that modifications to the neutrino-nucleon elastic cross section can potentially play a crucial role in producing successful supernova explosions. One possible source of such corrections can be found in a nonzero value for the nucleon's strange helicity content $Δs$. In the present analysis, however, we show that theoretical and experimental progress over the past decade has suggested a comparatively small magnitude for $Δs$, such that its sole effect is not sufficient to provide the physics leading to supernova explosions.

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。

↑