Abstract
In this article we give a short outline of current status of search for sterile neutrinos with masses up to 4 keV in “Troitsk nu-mass experiment”. We also discuss major sources of systematic uncertainties and methods to lower them.
Highlights
Neutrino studies are one of the most motivating research areas in modern particle physics
Additional point of interest is the search for so-called sterile neutrinos
There is a number of indirect indications that such sterile neutrinos could exist ([2]), but there is almost no direct knowledge about specific region of masses or mixing parameters
Summary
Neutrino studies are one of the most motivating research areas in modern particle physics. While the particle itself was theoretically proposed in 1930-s, neutrino exact properties are still not known. Due to very small interaction cross-section, neutrino proved to be very hard to study experimentally. One of the most interesting question is the absolute mass scale of neutrinos. The discovery of neutrino oscillations points to the fact that neutrino mass is not zero, but direct measurements still provide only upper limits for its mass of about 2 eV ([1]). Additional point of interest is the search for so-called sterile neutrinos (special type of neutrino that does not participate in weak interaction). There is a number of indirect indications that such sterile neutrinos could exist ([2]), but there is almost no direct knowledge about specific region of masses or mixing parameters
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