First search for K+→π+νν¯ using the decay-in-flight technique

The NA62 Collaboration

doi:10.1016/j.physletb.2019.01.067

First search for K⁺→π⁺νν¯ using the decay-in-flight technique

The NA62 Collaboration

Department of Pharmaceutical Sciences

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

Abstract

The NA62 experiment at the CERN SPS reports the first search for K⁺→π⁺νν¯ using the decay-in-flight technique, based on a sample of 1.21×10¹¹ K⁺ decays collected in 2016. The single event sensitivity is 3.15×10⁻¹⁰, corresponding to 0.267 Standard Model events. One signal candidate is observed while the expected background is 0.152 events. This leads to an upper limit of 14×10⁻¹⁰ on the K⁺→π⁺νν¯ branching ratio at 95% CL.

Original language	English
Pages (from-to)	156-166
Number of pages	11
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	791
DOIs	https://doi.org/10.1016/j.physletb.2019.01.067
Publication status	Published - 10 Apr 2019

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10.1016/j.physletb.2019.01.067

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title = "First search for K+→π+νν¯ using the decay-in-flight technique",

abstract = "The NA62 experiment at the CERN SPS reports the first search for K+→π+νν¯ using the decay-in-flight technique, based on a sample of 1.21×1011 K+ decays collected in 2016. The single event sensitivity is 3.15×10−10, corresponding to 0.267 Standard Model events. One signal candidate is observed while the expected background is 0.152 events. This leads to an upper limit of 14×10−10 on the K+→π+νν¯ branching ratio at 95\% CL.",

author = "\{The NA62 Collaboration\} and \{Cortina Gil\}, E. 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 \{Cotta Ramusino\}, A. 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 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 \{Di Filippo\}, D. and R. Arcidiacono",

note = "Publisher Copyright: {\textcopyright} 2019 The Author",

year = "2019",

month = apr,

day = "10",

doi = "10.1016/j.physletb.2019.01.067",

language = "English",

volume = "791",

pages = "156--166",

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

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T1 - First search for K+→π+νν¯ using the decay-in-flight technique

AU - The NA62 Collaboration

AU - Cortina Gil, 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 - Cotta Ramusino, 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 - 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 - Di Filippo, D.

AU - Arcidiacono, R.

PY - 2019/4/10

Y1 - 2019/4/10

N2 - The NA62 experiment at the CERN SPS reports the first search for K+→π+νν¯ using the decay-in-flight technique, based on a sample of 1.21×1011 K+ decays collected in 2016. The single event sensitivity is 3.15×10−10, corresponding to 0.267 Standard Model events. One signal candidate is observed while the expected background is 0.152 events. This leads to an upper limit of 14×10−10 on the K+→π+νν¯ branching ratio at 95% CL.

AB - The NA62 experiment at the CERN SPS reports the first search for K+→π+νν¯ using the decay-in-flight technique, based on a sample of 1.21×1011 K+ decays collected in 2016. The single event sensitivity is 3.15×10−10, corresponding to 0.267 Standard Model events. One signal candidate is observed while the expected background is 0.152 events. This leads to an upper limit of 14×10−10 on the K+→π+νν¯ branching ratio at 95% CL.

UR - https://www.scopus.com/pages/publications/85062332112

U2 - 10.1016/j.physletb.2019.01.067

DO - 10.1016/j.physletb.2019.01.067

M3 - Article

SN - 0370-2693

VL - 791

SP - 156

EP - 166

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 -

First search for K⁺→π⁺νν¯ using the decay-in-flight technique

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