Abstract
A precise test of the theory of stellar evolution can be performed by measuring the difference in average energy between the neutrino line produced by electron capture in the solar interior and the corresponding neutron line produced in a terrestrial laboratory. The high temperatures in the center of the Sun broaden the line asymmetrically, FWHM =1.6 keV, and cause an average energy shift of 1.3 keV. The width of the neutrino line should be taken into account in calculations of vacuum neutrino oscillations.
- Received 27 July 1993
DOI:https://doi.org/10.1103/PhysRevLett.71.2369
©1993 American Physical Society