Statistical criteria for search of heavy neutrino in tritium spectrum

被引：0

作者：

Lokhov, Alexey ^{[1
]}

Tkachov, Fyodor ^{[1
]}

机构：

[1] RAS, Inst Nucl Res, Moscow 117312, Russia

来源：

XIV INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS (TAUP 2015), PTS 1-7 | 2016年 / 718卷

关键词：

STEP-LIKE ANOMALIES;

D O I：

10.1088/1742-6596/718/6/062039

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The method of quasi-optimal weights is applied to constructing (quasi-)optimal criteria for search of heavy (4th generation) neutrino contribution in experimental beta-decay spectra. Various approaches to searching for anomalous contributions in spectra are discussed. In particular the tritium beta-decay spectrum (for instance, in Troitsk-v-mass, Mainz Neutrino Mass and KATRIN experiments) is analyzed using the derived special criteria. The power functions constructed for each criteria show the efficiency of the derived quasi-optimal criteria as statistical instruments for detecting the anomalous contributions in the spectra. The overall sensitivity of the criteria is estimated.

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页数：5

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