Probing late neutrino mass properties with supernova neutrinos

被引：19

作者：

Baker, Joseph ^{[1
]}

Goldberg, Haim

Perez, Gilad

Sarcevic, Ina

机构：

[1] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA

[2] Northeastern Univ, Dept Phys, Boston, MA 02115 USA

[3] Univ Calif Berkeley, Ernest Orlando Lawrence Berkeley Natl Lab, Theoret Phys Grp, Berkeley, CA 94720 USA

[4] SUNY Stony Brook, CN Yang Inst Theoret Phys State, Stony Brook, NY 11794 USA

来源：

PHYSICAL REVIEW D | 2007年 / 76卷 / 06期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevD.76.063004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Models of late-time neutrino mass generation contain new interactions of the cosmic background neutrinos with supernova relic neutrinos (SRNs). Exchange of an on-shell light scalar may lead to significant modification of the differential SRN flux observed at earth. We consider an Abelian U(1) model for generating neutrino masses at low scales, and show that there are cases for which the changes induced in the flux allow one to distinguish the Majorana or Dirac nature of neutrinos, as well as the type of neutrino mass hierarchy (normal or inverted or quasidegenerate). In some region of parameter space the determination of the absolute values of the neutrino masses is also conceivable. Measurements of the presence of these effects may be possible at the next-generation water Cerenkov detectors enriched with Gadolinium, or a 100 kton liquid argon detector.

引用

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