Determination of absolute neutrino masses from bursts of Z bosons in cosmic rays -: art. no. 171101

被引：78

作者：

Fodor, Z

Katz, SD

Ringwald, A

机构：

[1] DESY, D-22607 Hamburg, Germany

[2] Eotvos Lorand Univ, Inst Theoret Phys, H-1117 Budapest, Hungary

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.88.171101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Ultrahigh energy neutrinos (UHEnu) scatter on relic neutrinos (Rnu) producing Z bosons, which can decay hadronically producing protons (Z burst). We compare the predicted proton spectrum with the observed ultrahigh energy cosmic ray (UHECR) spectrum and determine the mass of the heaviest Rnu via a maximum likelihood analysis. Our prediction depends on the origin of the powerlike part of the UHECR spectrum: m(nu)=2.75(-0.97)(+1.28) eV for Galactic halo and 0.26(-0.14)(+0.20) eV for extragalactic origin. The necessary UHEnu flux should be detected in the near future.

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页数：4

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