MASSIVE DIRAC NEUTRINOS AND SN-1987A

被引：35

作者：

BURROWS, A

GANDHI, R

TURNER, MS

机构：

[1] FERMI NATL ACCELERATOR LAB,NASA FERMILAB ASTROPHYS CTR,BATAVIA,IL 60510

[2] UNIV CHICAGO,ENRICO FERMI INST,DEPT ASTRON & ASTROPHYS,CHICAGO,IL 60637

[3] UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 26期

关键词：

D O I：

10.1103/PhysRevLett.68.3834

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The wrong-helicity states of a Dirac neutrino can provide an important cooling mechanism for young neutron stars. Based on numerical models of the early cooling of the neutron star associated with SN 1987A which self-consistently incorporate wrong-helicity neutrino emission, we argue that a Dirac neutrino of mass greater than 30 keV (25 keV if it is degenerate) leads to shortening of the neutrino burst that is inconsistent with the Irvine-Michigan-Brookhaven and Kamiokande II data. If pions are as abundant as nucleons in the cores of neutron stars, our limit improves to 15 keV.

引用

页码：3834 / 3837

页数：4

共 32 条

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