@article{b830df848c4249e29f32fece48478ca3,
title = "First search for K+ → π0πμe decays",
abstract = "The first search for the lepton number violating decay K+→π0π−μ+e+ and lepton flavour violating decays K+→π0π+μ−e+, K+→π0π+μ+e− has been performed using a dataset collected by the NA62 experiment at CERN in 2016{\textendash}2018. Upper limits of 2.9{\texttimes}10−10, 3.1{\texttimes}10−10 and 5.0{\texttimes}10−10, respectively, are obtained at 90\% CL for the branching ratios of the three decays on the assumption of uniform phase-space distributions.",
author = "\{The NA62 Collaboration\} and Ashraf, \{M. U.\} and \{Cortina Gil\}, E. 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 Z. Hives and T. Husek and J. Jerhot and K. Kampf and M. Kolesar and M. Zamkovsky and \{De Martino\}, B. and M. Perrin-Terrin and B. D{\"o}brich and S. Lezki and J. Schubert and Akmete, \{A. T.\} 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 M. Soldani and H. Wahl and L. Bandiera and \{Cotta Ramusino\}, A. and A. Gianoli and M. Romagnoni and A. Sytov and E. Iacopini and G. Latino and M. Lenti and \{Lo Chiatto\}, P. and I. Panichi and E. Maurice",
note = "Publisher Copyright: {\textcopyright} 2024 CERN for the benefit of the NA62 Collaboration",
year = "2024",
month = dec,
day = "1",
doi = "10.1016/j.physletb.2024.139122",
language = "English",
volume = "859",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier B.V.",
}