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Search for K+ decays to a muon and invisible particles

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Search for K+ decays to a muon and invisible particles. / The NA62 Collaboration.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 816, 136259, 10.05.2021.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

The NA62 Collaboration 2021, 'Search for K+ decays to a muon and invisible particles', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 816, 136259. https://doi.org/10.1016/j.physletb.2021.136259

APA

The NA62 Collaboration (2021). Search for K+ decays to a muon and invisible particles. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 816, [136259]. https://doi.org/10.1016/j.physletb.2021.136259

Vancouver

The NA62 Collaboration. Search for K+ decays to a muon and invisible particles. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2021 May 10;816:136259. Epub 2021 Mar 30. doi: 10.1016/j.physletb.2021.136259

Author

The NA62 Collaboration. / Search for K+ decays to a muon and invisible particles. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2021 ; Vol. 816.

Bibtex

@article{326a31a9f9e745e490b7f028f04736ef,
title = "Search for K+ decays to a muon and invisible particles",
abstract = "The NA62 experiment at CERN reports searches for K+→μ+N and K+→μ+νX decays, where N and X are massive invisible particles, using the 2016–2018 data set. The N particle is assumed to be a heavy neutral lepton, and the results are expressed as upper limits of O(10−8) of the neutrino mixing parameter |Uμ4|2 for N masses in the range 200–384 MeV/c2 and lifetime exceeding 50 ns. The X particle is considered a scalar or vector hidden sector mediator decaying to an invisible final state, and upper limits of the decay branching fraction for X masses in the range 10–370 MeV/c2 are reported for the first time, ranging from O(10−5) to O(10−7). An improved upper limit of 1.0×10−6 is established at 90% CL on the K+→μ+ννν¯ branching fraction. ",
author = "{The NA62 Collaboration} and {Cortina Gil}, E. and A. Kleimenova and E. Minucci and S. Padolski and P. Petrov and A. Shaikhiev and R. Volpe and T. Numao and Y. Petrov and B. Velghe and D. Bryman and J. Fu and T. Husek and J. Jerhot and K. Kampf and M. Zamkovsky and R. Aliberti and G. Khoriauli and J. Kunze and D. Lomidze and L. Peruzzo and M. Vormstein and R. Wanke and P. Dalpiaz and M. Fiorini and I. Neri and A. Norton and F. Petrucci and H. Wahl and {Cotta Ramusino}, A. and A. Gianoli and E. Iacopini and G. Latino and M. Lenti and A. Parenti and A. Bizzeti and F. Bucci and A. Antonelli and G. Georgiev and L. Gatignon and J.R. Fry and C. Parkinson and R. Page and D. Britton and C. Graham and J. Carmignani and J.B. Dainton and R.W.L. Jones and G. Ruggiero and P. Cooper",
year = "2021",
month = may,
day = "10",
doi = "10.1016/j.physletb.2021.136259",
language = "English",
volume = "816",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
publisher = "Elsevier Science B.V.",

}

RIS

TY - JOUR

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

AU - The NA62 Collaboration

AU - Cortina Gil, E.

AU - Kleimenova, A.

AU - Minucci, E.

AU - Padolski, S.

AU - Petrov, P.

AU - Shaikhiev, A.

AU - Volpe, R.

AU - Numao, T.

AU - Petrov, Y.

AU - Velghe, B.

AU - Bryman, D.

AU - Fu, J.

AU - Husek, T.

AU - Jerhot, J.

AU - Kampf, K.

AU - Zamkovsky, M.

AU - Aliberti, R.

AU - Khoriauli, G.

AU - Kunze, J.

AU - Lomidze, D.

AU - Peruzzo, L.

AU - Vormstein, M.

AU - Wanke, R.

AU - Dalpiaz, P.

AU - Fiorini, M.

AU - Neri, I.

AU - Norton, A.

AU - Petrucci, F.

AU - Wahl, H.

AU - Cotta Ramusino, A.

AU - Gianoli, A.

AU - Iacopini, E.

AU - Latino, G.

AU - Lenti, M.

AU - Parenti, A.

AU - Bizzeti, A.

AU - Bucci, F.

AU - Antonelli, A.

AU - Georgiev, G.

AU - Gatignon, L.

AU - Fry, J.R.

AU - Parkinson, C.

AU - Page, R.

AU - Britton, D.

AU - Graham, C.

AU - Carmignani, J.

AU - Dainton, J.B.

AU - Jones, R.W.L.

AU - Ruggiero, G.

AU - Cooper, P.

PY - 2021/5/10

Y1 - 2021/5/10

N2 - The NA62 experiment at CERN reports searches for K+→μ+N and K+→μ+νX decays, where N and X are massive invisible particles, using the 2016–2018 data set. The N particle is assumed to be a heavy neutral lepton, and the results are expressed as upper limits of O(10−8) of the neutrino mixing parameter |Uμ4|2 for N masses in the range 200–384 MeV/c2 and lifetime exceeding 50 ns. The X particle is considered a scalar or vector hidden sector mediator decaying to an invisible final state, and upper limits of the decay branching fraction for X masses in the range 10–370 MeV/c2 are reported for the first time, ranging from O(10−5) to O(10−7). An improved upper limit of 1.0×10−6 is established at 90% CL on the K+→μ+ννν¯ branching fraction.

AB - The NA62 experiment at CERN reports searches for K+→μ+N and K+→μ+νX decays, where N and X are massive invisible particles, using the 2016–2018 data set. The N particle is assumed to be a heavy neutral lepton, and the results are expressed as upper limits of O(10−8) of the neutrino mixing parameter |Uμ4|2 for N masses in the range 200–384 MeV/c2 and lifetime exceeding 50 ns. The X particle is considered a scalar or vector hidden sector mediator decaying to an invisible final state, and upper limits of the decay branching fraction for X masses in the range 10–370 MeV/c2 are reported for the first time, ranging from O(10−5) to O(10−7). An improved upper limit of 1.0×10−6 is established at 90% CL on the K+→μ+ννν¯ branching fraction.

U2 - 10.1016/j.physletb.2021.136259

DO - 10.1016/j.physletb.2021.136259

M3 - Journal article

VL - 816

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 136259

ER -