Search for K+ decays to a lepton and invisible particles

The NA62 Collaboration

doi:10.22323/1.402.0157

Search for K⁺ decays to a lepton and invisible particles

The NA62 Collaboration

School of Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

Abstract

Searches for heavy neutral leptons N in the K⁺ → e⁺N and K⁺ → μ⁺N decay channels using the dataset collected by the NA62 experiment at CERN between 2016-2018 are presented. Upper limits on the corresponding mixing matrix elements are reported at the level of O(10⁻⁹) and O(10⁻⁸), respectively. This represents an improvement of at least an order of magnitude on previous measurement, as well as an extension to higher masses than previously covered. Related searches set upper limits on the rate of the K⁺ → μ⁺νν(Equation presented) and K⁺ → μ⁺νX decay channels, with X an invisible scalar or vector boson.

Original language	English
Title of host publication	Proceedings of Science
Publisher	PoS
Volume	402
DOIs	https://doi.org/10.22323/1.402.0157
Publication status	Published - 31 Mar 2022
Event	22nd International Workshop on Neutrinos from Accelerators, NuFact 2021 - Cagliari, Italy Duration: 6 Sept 2021 → 11 Sept 2021

Publication series

Name	Proceedings of Science
Publisher	SISSA
ISSN (Print)	1824-8039

Conference

Conference	22nd International Workshop on Neutrinos from Accelerators, NuFact 2021
Country/Territory	Italy
City	Cagliari
Period	6/09/21 → 11/09/21

Bibliographical note

Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons

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10.22323/1.402.0157Licence: CC BY-NC-ND

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Cite this

@inproceedings{b0ef7f74d03249f79467a6ff5d28f48c,

title = "Search for K+ decays to a lepton and invisible particles",

abstract = "Searches for heavy neutral leptons N in the K+ → e+N and K+ → μ+N decay channels using the dataset collected by the NA62 experiment at CERN between 2016-2018 are presented. Upper limits on the corresponding mixing matrix elements are reported at the level of O(10−9) and O(10−8), respectively. This represents an improvement of at least an order of magnitude on previous measurement, as well as an extension to higher masses than previously covered. Related searches set upper limits on the rate of the K+ → μ+νν(Equation presented) and K+ → μ+νX decay channels, with X an invisible scalar or vector boson.",

author = "\{The NA62 Collaboration\} and Nicolas Lurkin and A. Akmete and R. Aliberti and F. Ambrosino and R. Ammendola and B. An-Gelucci and A. Antonelli and G. Anzivino and R. Arcidiacono and T. Bache and A. Baeva and D. Baigarashev and L. Bandiera and M. Barbanera and J. Bernhard and A. Biagioni and L. Bician and C. Biino and A. Bizzeti and T. Blazek and B. Bloch-Devaux and P. Boboc and V. Bonaiuto and M. Boretto and M. Bragadireanu and \{Briano Olvera\}, A. and D. Britton and H. Heath and R. Page and S. Trilov",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons; 22nd International Workshop on Neutrinos from Accelerators, NuFact 2021 ; Conference date: 06-09-2021 Through 11-09-2021",

year = "2022",

month = mar,

day = "31",

doi = "10.22323/1.402.0157",

language = "English",

volume = "402",

series = "Proceedings of Science",

publisher = "PoS",

booktitle = "Proceedings of Science",

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TY - GEN

T1 - Search for K+ decays to a lepton and invisible particles

AU - The NA62 Collaboration

AU - Lurkin, Nicolas

AU - Akmete, A.

AU - Aliberti, R.

AU - Ambrosino, F.

AU - Ammendola, R.

AU - An-Gelucci, B.

AU - Antonelli, A.

AU - Anzivino, G.

AU - Arcidiacono, R.

AU - Bache, T.

AU - Baeva, A.

AU - Baigarashev, D.

AU - Bandiera, L.

AU - Barbanera, M.

AU - Bernhard, J.

AU - Biagioni, A.

AU - Bician, L.

AU - Biino, C.

AU - Bizzeti, A.

AU - Blazek, T.

AU - Bloch-Devaux, B.

AU - Boboc, P.

AU - Bonaiuto, V.

AU - Boretto, M.

AU - Bragadireanu, M.

AU - Briano Olvera, A.

AU - Britton, D.

AU - Heath, H.

AU - Page, R.

AU - Trilov, S.

PY - 2022/3/31

Y1 - 2022/3/31

N2 - Searches for heavy neutral leptons N in the K+ → e+N and K+ → μ+N decay channels using the dataset collected by the NA62 experiment at CERN between 2016-2018 are presented. Upper limits on the corresponding mixing matrix elements are reported at the level of O(10−9) and O(10−8), respectively. This represents an improvement of at least an order of magnitude on previous measurement, as well as an extension to higher masses than previously covered. Related searches set upper limits on the rate of the K+ → μ+νν(Equation presented) and K+ → μ+νX decay channels, with X an invisible scalar or vector boson.

AB - Searches for heavy neutral leptons N in the K+ → e+N and K+ → μ+N decay channels using the dataset collected by the NA62 experiment at CERN between 2016-2018 are presented. Upper limits on the corresponding mixing matrix elements are reported at the level of O(10−9) and O(10−8), respectively. This represents an improvement of at least an order of magnitude on previous measurement, as well as an extension to higher masses than previously covered. Related searches set upper limits on the rate of the K+ → μ+νν(Equation presented) and K+ → μ+νX decay channels, with X an invisible scalar or vector boson.

UR - https://www.scopus.com/pages/publications/85128983073

U2 - 10.22323/1.402.0157

DO - 10.22323/1.402.0157

M3 - Conference Contribution (Conference Proceeding)

AN - SCOPUS:85128983073

VL - 402

T3 - Proceedings of Science

BT - Proceedings of Science

PB - PoS

T2 - 22nd International Workshop on Neutrinos from Accelerators, NuFact 2021

Y2 - 6 September 2021 through 11 September 2021

ER -