A lab-scale experiment for keV sterile neutrino search from tritium beta decay spectrum

31 Aug 2021, 17:10
Talk in parallel session Neutrino physics and astrophysics Discussion Panel Neutrinos 4


YongChang Lee (IBS, SNU)


We developed a simple small-scale detection method for beta decay
spectrum of 3H. This research is motivated to investigate the presence
of sterile neutrinos in keV region. In our experiment, tritium nuclei
are embedded in a 1x1x1 cm^3 LiF crystal from 6Li(n,3H)4He reaction.
The beta energy spectrum is measured with an MMC sensor, one of the
high-resolution microcalorimeters operating at mK temperatures. We
present the method for the sample preparation and the experiment
together with the physics result from the first measurement set.
Moreover, an expected sensitivity to search for the heavy neutrino is
discussed for one year measurement with the setup.

Primary author

YongChang Lee (IBS, SNU)


Mr. DoHyung Kwon (IBS) Mr. HanBeom Kim (IBS) Mr. HoSeong Lim (IBS) Ms. HyeJin Lee (IBS) Dr. HyeLim Kim (IBS) Dr. HyunSeo Park (KRISS) Dr. JinA Jeon (IBS) Mr. KyungRae Woo (IBS) Dr. SangGoon Kim (IBS) Ms. Sora Kim (IBS) Prof. SunKee Kim (SNU(Seoul National University)) Prof. YongHamb Kim (IBS) Dr. YoungSoo Yoon (KRISS)

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