Search for heavy neutrino in decay at ISTRA+ setup
Heavy neutrino nu h with m h [lap] 300 MeV / c 2 can be effectively searched for in kaon decays. We put upper limits on a mixing matrix element | U mu h | 2 for radiatively decaying nu h from K - arrow right mu - nu h ( nu h arrow right nu gamma ) decay chain in the following parameter region: 30 Me...
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Veröffentlicht in: | Physics letters. B 2012-04, Vol.710 (2), p.307-317 |
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container_title | Physics letters. B |
container_volume | 710 |
creator | Duk, V A Bolotov, V N Khudyakov, A A Lebedev, V A Makarov, AI Novikov, V P Polyarush, AYu Akimenko, SA Britvich, GI Filin, AP Inyakin, A V Kholodenko, SA Leontiev, V M Obraztsov, V F Polyakov, V A Romanovsky, VI Stenyakin, O V Tchikilev, O G Uvarov, V A Yushchenko, O P |
description | Heavy neutrino nu h with m h [lap] 300 MeV / c 2 can be effectively searched for in kaon decays. We put upper limits on a mixing matrix element | U mu h | 2 for radiatively decaying nu h from K - arrow right mu - nu h ( nu h arrow right nu gamma ) decay chain in the following parameter region: 30 MeV / c 2 [el] m h [el] 80 MeV / c 2 ; 10 - 11 s [el] tau h [el] 10 - 9 s . For the whole region | U mu h | 2 [lap] 5 times 10 - 5 for Majorana type of nu h and | U mu h | 2 [lap] 8 times 10 - 5 for the Dirac case. |
doi_str_mv | 10.1016/j.physletb.2012.02.087 |
format | Article |
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subjects | Chains Decay Elementary particles Kaons Neutrinos Searching |
title | Search for heavy neutrino in decay at ISTRA+ setup |
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