Search for heavy neutrino in decay

A. S. Sadovsky; V. F. Kurshetsov; A. P. Filin; S. A. Akimenko; A. V. Artamonov; A. M. Blik; V. V. Brekhovskikh; V. S. Burtovoy; V. N. Bychkov; S. V. Donskov; V. A. Duk; S. N. Filippov; A. M. Gorin; E. N. Gushchin; A. V. Inyakin; G. D. Kekelidze; G. V. Khaustov; S. A. Kholodenko; A. A. Khudyakov; V. N. Kolosov; A. S. Konstantinov; V. I. Kravtsov; Yu. G. Kudenko; V. M. Leontiev; V. A. Lishin; V. M. Lysan; M. V. Medynsky; Yu. V. Mikhailov; V. F. Obraztsov; V. A. Polyakov; A. Yu. Polyarush; A. V. Popov; V. I. Romanovsky; V. I. Rykalin; V. D. Samoilenko; V. K. Semenov; O. V. Stenyakin; O. G. Tchikilev; V. A. Uvarov; O. P. Yushchenko; B. Zh. Zalikhanov

doi:10.1140/epjc/s10052-018-5566-x

EPJ

Search for heavy neutrino in $Mathematical equation: $$K^{+} \rightarrow \mu ^{+} \nu _{H}$$$ decay

A. S. Sadovsky¹^*, V. F. Kurshetsov¹, A. P. Filin¹, S. A. Akimenko¹, A. V. Artamonov¹, A. M. Blik¹, V. V. Brekhovskikh¹, V. S. Burtovoy¹, V. N. Bychkov³, S. V. Donskov¹, V. A. Duk², S. N. Filippov², A. M. Gorin¹, E. N. Gushchin², A. V. Inyakin¹, G. D. Kekelidze³, G. V. Khaustov¹, S. A. Kholodenko¹, A. A. Khudyakov², V. N. Kolosov¹, A. S. Konstantinov¹, V. I. Kravtsov², Yu. G. Kudenko², V. M. Leontiev¹, V. A. Lishin¹, V. M. Lysan³, M. V. Medynsky¹, Yu. V. Mikhailov¹, V. F. Obraztsov¹, V. A. Polyakov¹, A. Yu. Polyarush², A. V. Popov¹, V. I. Romanovsky¹, V. I. Rykalin¹, V. D. Samoilenko¹, V. K. Semenov¹, O. V. Stenyakin¹, O. G. Tchikilev¹, V. A. Uvarov¹, O. P. Yushchenko¹ and B. Zh. Zalikhanov³

¹ NRC “Kurchatov Institute”-IHEP, 142281, Protvino, Russia
² Institute for Nuclear Research of the Russian Academy of Sciences, 117312, Moscow, Russia
³ Joint Institute of Nuclear Research, 141980, Dubna, Russia

^* e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Received: 11 September 2017
Accepted: 17 January 2018
Published online: 31 January 2018

Abstract

A high statistics data sample of the $Mathematical equation: $$K^{+}\rightarrow \mu ^{+}\nu _{\mu }$$$ decay was accumulated by the OKA experiment in 2012. The missing mass analysis was performed to search for the decay channel $Mathematical equation: $$K^{+}\rightarrow \mu ^{+}\nu _{H}$$$ with a hypothetic stable heavy neutrino in the final state. The obtained missing mass spectrum does not show peaks that could be attributed to existence of stable heavy neutrinos in the mass range $Mathematical equation: $$(270< m_{\nu _{H}} < 375)$$$ MeV $Mathematical equation: $$/c^{2}$$$ . As a result, upper limits on the branching ratio and on the value of the mixing element $Mathematical equation: $$|U_{\mu H}|^{2}$$$ are obtained.

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EPJ

Search for heavy neutrino in decay

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Search for heavy neutrino in $Mathematical equation: $$K^{+} \rightarrow \mu ^{+} \nu _{H}$$$ decay