Search for heavy neutral lepton production in k+decays

The NA62 Collaboration

doi:10.1016/j.physletb.2018.01.031

Search for heavy neutral lepton production in k+decays

The NA62 Collaboration

Research output: Contribution to journal › Article › peer-review

Abstract

A search for heavy neutral lepton production in K⁺ decays using a data sample collected with a minimum bias trigger by the NA62 experiment at CERN in 2015 is reported. Upper limits at the 10⁻⁷ to 10⁻⁶ level are established on the elements of the extended neutrino mixing matrix |U_e4|² and |U_μ4|² for heavy neutral lepton mass in the ranges 170–448 MeV/c² and 250–373 MeV/c², respectively. This improves on the previous limits from HNL production searches over the whole mass range considered for |U_e4|², and above 300 MeV/c² for |U_μ4|².

Original language	English
Pages (from-to)	137-145
Number of pages	9
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	778
DOIs	https://doi.org/10.1016/j.physletb.2018.01.031
Publication status	Published - 10 Mar 2018
Externally published	Yes

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10.1016/j.physletb.2018.01.031

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@article{21f54047462e46a090185123f0bf7e83,

title = "Search for heavy neutral lepton production in k+decays",

abstract = "A search for heavy neutral lepton production in K+ decays using a data sample collected with a minimum bias trigger by the NA62 experiment at CERN in 2015 is reported. Upper limits at the 10−7 to 10−6 level are established on the elements of the extended neutrino mixing matrix |Ue4|2 and |Uμ4|2 for heavy neutral lepton mass in the ranges 170–448 MeV/c2 and 250–373 MeV/c2, respectively. This improves on the previous limits from HNL production searches over the whole mass range considered for |Ue4|2, and above 300 MeV/c2 for |Uμ4|2.",

author = "\{The NA62 Collaboration\} and E. Cortinagil and E. Minucci and S. Padolski and P. Petrov and B. Velghe and G. Georgiev and V. Kozhuharov and L. Litov and T. Numao and D. Bryman and J. Fu and T. Husek and K. Kampf and M. Zamkovsky and R. Aliberti and G. Khoriauli and J. Kunze and D. Lomidze and R. Marchevski and L. Peruzzo and M. Vormstein and R. Wanke and P. Dalpiaz and M. Fiorini and E. Gamberini and I. Neri and A. Norton and F. Petrucci and H. Wahl and A. Cottaramusino and A. Gianoli and E. Iacopini and G. Latino and M. Lenti and A. Bizzeti and F. Bucci and R. Volpe and A. Antonelli and F. Gonnella and G. Lamanna and G. Lanfranchi and G. Mannocchi and S. Martellotti and M. Moulson and M. Raggi and T. Spadaro and F. Ambrosino and T. Capussela and M. Corvino and E. Maurice",

note = "Publisher Copyright: {\textcopyright} 2018 The Author(s)",

year = "2018",

month = mar,

day = "10",

doi = "10.1016/j.physletb.2018.01.031",

language = "English",

volume = "778",

pages = "137--145",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

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TY - JOUR

T1 - Search for heavy neutral lepton production in k+decays

AU - The NA62 Collaboration

AU - Cortinagil, E.

AU - Minucci, E.

AU - Padolski, S.

AU - Petrov, P.

AU - Velghe, B.

AU - Georgiev, G.

AU - Kozhuharov, V.

AU - Litov, L.

AU - Numao, T.

AU - Bryman, D.

AU - Fu, J.

AU - Husek, T.

AU - Kampf, K.

AU - Zamkovsky, M.

AU - Aliberti, R.

AU - Khoriauli, G.

AU - Kunze, J.

AU - Lomidze, D.

AU - Marchevski, R.

AU - Peruzzo, L.

AU - Vormstein, M.

AU - Wanke, R.

AU - Dalpiaz, P.

AU - Fiorini, M.

AU - Gamberini, E.

AU - Neri, I.

AU - Norton, A.

AU - Petrucci, F.

AU - Wahl, H.

AU - Cottaramusino, A.

AU - Gianoli, A.

AU - Iacopini, E.

AU - Latino, G.

AU - Lenti, M.

AU - Bizzeti, A.

AU - Bucci, F.

AU - Volpe, R.

AU - Antonelli, A.

AU - Gonnella, F.

AU - Lamanna, G.

AU - Lanfranchi, G.

AU - Mannocchi, G.

AU - Martellotti, S.

AU - Moulson, M.

AU - Raggi, M.

AU - Spadaro, T.

AU - Ambrosino, F.

AU - Capussela, T.

AU - Corvino, M.

AU - Maurice, E.

PY - 2018/3/10

Y1 - 2018/3/10

N2 - A search for heavy neutral lepton production in K+ decays using a data sample collected with a minimum bias trigger by the NA62 experiment at CERN in 2015 is reported. Upper limits at the 10−7 to 10−6 level are established on the elements of the extended neutrino mixing matrix |Ue4|2 and |Uμ4|2 for heavy neutral lepton mass in the ranges 170–448 MeV/c2 and 250–373 MeV/c2, respectively. This improves on the previous limits from HNL production searches over the whole mass range considered for |Ue4|2, and above 300 MeV/c2 for |Uμ4|2.

AB - A search for heavy neutral lepton production in K+ decays using a data sample collected with a minimum bias trigger by the NA62 experiment at CERN in 2015 is reported. Upper limits at the 10−7 to 10−6 level are established on the elements of the extended neutrino mixing matrix |Ue4|2 and |Uμ4|2 for heavy neutral lepton mass in the ranges 170–448 MeV/c2 and 250–373 MeV/c2, respectively. This improves on the previous limits from HNL production searches over the whole mass range considered for |Ue4|2, and above 300 MeV/c2 for |Uμ4|2.

UR - https://www.scopus.com/pages/publications/85043584982

U2 - 10.1016/j.physletb.2018.01.031

DO - 10.1016/j.physletb.2018.01.031

M3 - Article

AN - SCOPUS:85043584982

SN - 0370-2693

VL - 778

SP - 137

EP - 145

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

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

ER -

Search for heavy neutral lepton production in k+decays

Abstract

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