Searches for lepton number violating K+ → π−(π0)e+e+ decays

The NA62 Collaboration

doi:10.1016/j.physletb.2022.137172

Searches for lepton number violating K⁺ → π⁻(π⁰)e⁺e⁺ decays

The NA62 Collaboration

University of Louvain
TRIUMF
University of British Columbia
Charles University
Johannes Gutenberg University
Sezione INFN di Ferrara
Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
LNF-INFN
INFN Sezione di Napoli
University of Liverpool
INFN Sezione di Perugia
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
Scuola Normale Superiore di Pisa
University of Rome
Sezione di Roma
INFN Roma Tor Vergata
INFN Sezione di Torino
Universidad Autónoma de San Luis Potosi
Horia Hulubei National Institute of Physics and Nuclear Engineering
Joint Institute for Nuclear Research, Dubna
Institute for Nuclear Research of the Russian Academy of Sciences
Kurchatov Institute
Comenius University
European Organization for Nuclear Research
University of Birmingham
University of Bristol
University of Glasgow
Lancaster University
George Mason University

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

Searches for lepton number violating K⁺→π⁻e⁺e⁺ and K⁺→π⁻π⁰e⁺e⁺ decays have been performed using the complete dataset collected by the NA62 experiment at CERN in 2016–2018. Upper limits of 5.3×10⁻¹¹ and 8.5×10⁻¹⁰ are obtained on the decay branching fractions at 90% confidence level. The former result improves by a factor of four over the previous best limit, while the latter result represents the first limit on the K⁺→π⁻π⁰e⁺e⁺ decay rate.

langue originale	Anglais
Numéro d'article	137172
journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	830
Les DOIs	https://doi.org/10.1016/j.physletb.2022.137172
état	Publié - 10 juil. 2022
Modification externe	Oui

Accès au document

10.1016/j.physletb.2022.137172

Contient cette citation

@article{a27499f07e1f4af884a00436ed61d126,

title = "Searches for lepton number violating K+ → π−(π0)e+e+ decays",

abstract = "Searches for lepton number violating K+→π−e+e+ and K+→π−π0e+e+ decays have been performed using the complete dataset collected by the NA62 experiment at CERN in 2016–2018. Upper limits of 5.3×10−11 and 8.5×10−10 are obtained on the decay branching fractions at 90\% confidence level. The former result improves by a factor of four over the previous best limit, while the latter result represents the first limit on the K+→π−π0e+e+ decay rate.",

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 Wong, \{V. W.S.\} 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 V. Kozhuharov and G. Lanfranchi and S. Martellotti and M. Moulson and T. Spadaro and G. Tinti and F. Ambrosino and T. Capussela and M. Corvino and E. Maurice",

note = "Publisher Copyright: {\textcopyright} 2022 The Author",

year = "2022",

month = jul,

day = "10",

doi = "10.1016/j.physletb.2022.137172",

language = "English",

volume = "830",

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

issn = "0370-2693",

}

TY - JOUR

T1 - Searches for lepton number violating K+ → π−(π0)e+e+ decays

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 - Wong, V. W.S.

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 - Kozhuharov, V.

AU - Lanfranchi, G.

AU - Martellotti, S.

AU - Moulson, M.

AU - Spadaro, T.

AU - Tinti, G.

AU - Ambrosino, F.

AU - Capussela, T.

AU - Corvino, M.

AU - Maurice, E.

PY - 2022/7/10

Y1 - 2022/7/10

N2 - Searches for lepton number violating K+→π−e+e+ and K+→π−π0e+e+ decays have been performed using the complete dataset collected by the NA62 experiment at CERN in 2016–2018. Upper limits of 5.3×10−11 and 8.5×10−10 are obtained on the decay branching fractions at 90% confidence level. The former result improves by a factor of four over the previous best limit, while the latter result represents the first limit on the K+→π−π0e+e+ decay rate.

AB - Searches for lepton number violating K+→π−e+e+ and K+→π−π0e+e+ decays have been performed using the complete dataset collected by the NA62 experiment at CERN in 2016–2018. Upper limits of 5.3×10−11 and 8.5×10−10 are obtained on the decay branching fractions at 90% confidence level. The former result improves by a factor of four over the previous best limit, while the latter result represents the first limit on the K+→π−π0e+e+ decay rate.

U2 - 10.1016/j.physletb.2022.137172

DO - 10.1016/j.physletb.2022.137172

M3 - Article

AN - SCOPUS:85147999897

SN - 0370-2693

VL - 830

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 - 137172

ER -

Searches for lepton number violating K+ → π−(π0)e+e+ decays

Résumé

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Contient cette citation

Searches for lepton number violating K⁺ → π⁻(π⁰)e⁺e⁺ decays