Fission cycling in supernova nucleosynthesis: Active-sterile neutrino oscillations

被引：27

作者：

Beun, J. ^{[1
]}

McLaughlin, G. C.

Surman, R.

Hix, W. R.

机构：

[1] N Carolina State Univ, Dept Phys, Raleigh, NC 27595 USA

[2] Union Coll, Dept Phys, Schenectady, NY 12308 USA

[3] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA

来源：

PHYSICAL REVIEW D | 2006年 / 73卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.73.093007

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate nucleosynthesis in the supernova post-core bounce neutrino-driven wind environment in the presence of active-sterile neutrino transformation. We consider active-sterile neutrino oscillations for a range of mixing parameters: vacuum mass-squared differences of 0.1 eV(2)<=delta m(2)<= 100 eV(2), and vacuum mixing angles of sin(2)2 theta(v)>= 10(-4). We find a consistent r-process pattern for a large range of mixing parameters that is in rough agreement with the halo star CS 22892-052 abundances and the pattern shape is determined by fission cycling. We find that the allowed region for the formation of the r-process peaks overlaps the liquid scintillator neutron detector (LSND) and null-short baseline (NSBL) (3+1) allowed region.

引用

页数：11

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