First search for K+ → π0πμe decays
Ashraf M.U. Cortina Gil E. Minucci E. Padolski S. Petrov P. Shaikhiev A. Volpe R. Numao T. Petrov Y. Velghe B. Wong V.W.S. Bryman D. Fu J. Hives Z. Husek T. Jerhot J. Kampf K. Kolesar M. Zamkovsky M. De Martino B. Perrin-Terrin M. Döbrich B. Lezki S. Schubert J. Akmete A.T. Aliberti R. Khoriauli G. Kunze J. Lomidze D. Peruzzo L. Vormstein M. Wanke R. Dalpiaz P. Fiorini M. Neri I. Norton A. Petrucci F. Soldani M. Wahl H. Bandiera L. Cotta Ramusino A. Gianoli A. Romagnoni M. Sytov A. Iacopini E. Latino G. Lenti M. Lo Chiatto P. Panichi I. Parenti A. Bizzeti A. Bucci F. Antonelli A. Georgiev G. Kozhuharov V. Lanfranchi G. Martellotti S. Moulson M. Spadaro T. Tinti G. Ambrosino F. Capussela T. Corvino M. DErrico M. Di Filippo D. Fiorenza R. Francesconi M. Giordano R. Massarotti P. Mirra M. Napolitano M. Rosa I. Saracino G. Anzivino G. Brizioli F. Imbergamo E. Lollini R. Piandani R. Santoni C. Barbanera M. Cenci P. Checcucci B. Lubrano P. Lupi M. Pepe M. Piccini M. Costantini F. Di Lella L. Doble N. Giorgi M. Giudici S. Lamanna G. Lari E. Pedreschi E. Sozzi M. Cerri C. Fantechi R. Pontisso L. Spinella F. Mannelli I. DAgostini G. Raggi M. Biagioni A. Cretaro P. Frezza O. Leonardi E. Lonardo A. Turisini M. Valente P. Vicini P. Ammendola R. Bonaiuto V. Fucci A. Salamon A. Sargeni F. Arcidiacono R. Bloch-Devaux B. Boretto M. Menichetti E. Migliore E. Soldi D. Biino C. Filippi A. Marchetto F. Briano Olvera A. Engelfried J. Estrada-Tristan N. Reyes Santos M.A. Rodriguez Rivera K.A. Boboc P. Bragadireanu A.M. Ghinescu S.A. Hutanu O.E. Bician L. Blazek T. Cerny V. Kucerova Z. Velas T. Bernhard J. Ceccucci A. Ceoletta M. Danielsson H. De Simone N. Duval F. Federici L. Gamberini E. Gatignon L. Guida R. Hahn F. Holzer E.B. Jenninger B. Koval M. Laycock P. Lehmann Miotto G. Lichard P. Mapelli A. Massri K. Noy M. Palladino V. Pinzino J. Ryjov V. Schuchmann S. Venditti S. Chang X. Kleimenova A. Marchevski R. Bache T. Brunetti M.B. Duk V. Fascianelli V. Fry J.R. Gonnella F. Goudzovski E. Henshaw J. Iacobuzio L. Kenworthy C. Lazzeroni C. Lurkin N. Newson F. Parkinson C. Romano A. Sanders J. Sergi A. Sturgess A. Swallow J. Tomczak A. Heath H. Page R. Trilov S. Angelucci B. Britton D. Graham C. Protopopescu D. Carmignani J. Dainton J.B. Jones R.W.L. Ruggiero G. Fulton L. Hutchcroft D. Maurice E. Wrona B. Conovaloff A. Cooper P. Coward D. Rubin P. Baeva A. Baigarashev D. Bautin V. Emelyanov D. Enik T. Falaleev V. Fedotov S. Gorshanov K. Gushchin E. Kekelidze V. Kereibay D. Kholodenko S. Khotyantsev A. Korotkova A. Kudenko Y. Kurochka V. Kurshetsov V. Litov L. Madigozhin D. Medvedeva M. Mefodev A. Misheva M. Molokanova N. Movchan S. Obraztsov V. Okhotnikov A. Ostankov A. Polenkevich I. Potrebenikov Y. Sadovskiy A. Salamatin K. Semenov V. Shkarovskiy S. Sugonyaev V. Yushchenko O. Zinchenko A.
December 2024Elsevier B.V.
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
2024#859
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 2016–2018. Upper limits of 2.9×10−10, 3.1×10−10 and 5.0×10−10, respectively, are obtained at 90% CL for the branching ratios of the three decays on the assumption of uniform phase-space distributions.
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Université Catholique de Louvain, Louvain-La-Neuve, Belgium
TRIUMF, Vancouver, BC, Canada
University of British Columbia, Vancouver, BC, Canada
Charles University, Prague, Czech Republic
Aix Marseille University, CNRS/IN2P3, CPPM, Marseille, France
Max-Planck-Institut für Physik (Werner-Heisenberg-Institut), Garching, Germany
Institut für Physik, PRISMA Cluster of Excellence, Universität Mainz, Mainz, Germany
Dipartimento di Fisica e Scienze della Terra dellUniversità e INFN, Sezione di Ferrara, Ferrara, Italy
INFN, Sezione di Ferrara, Ferrara, Italy
Dipartimento di Fisica e Astronomia dellUniversità e INFN, Sezione di Firenze, Sesto Fiorentino, Italy
INFN, Sezione di Firenze, Sesto Fiorentino, Italy
Laboratori Nazionali di Frascati, Frascati, Italy
Dipartimento di Fisica “Ettore Pancini” e INFN, Sezione di Napoli, Napoli, Italy
Dipartimento di Fisica e Geologia dellUniversità e INFN, Sezione di Perugia, Perugia, Italy
INFN, Sezione di Perugia, Perugia, Italy
Dipartimento di Fisica dellUniversità e INFN, Sezione di Pisa, Pisa, Italy
INFN, Sezione di Pisa, Pisa, Italy
Scuola Normale Superiore e INFN, Sezione di Pisa, Pisa, Italy
Dipartimento di Fisica, Sapienza Università di Roma e INFN, Sezione di Roma I, Roma, Italy
INFN, Sezione di Roma I, Roma, Italy
INFN, Sezione di Roma Tor Vergata, Roma, Italy
Dipartimento di Fisica dellUniversità e INFN, Sezione di Torino, Torino, Italy
INFN, Sezione di Torino, Torino, Italy
Instituto de Física, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, Bucharest-Magurele, Romania
Faculty of Mathematics, Physics and Informatics, Comenius University, Bratislava, Slovakia
CERN, European Organization for Nuclear Research, Geneva, Switzerland
Ecole Polytechnique Fédérale Lausanne, Lausanne, Switzerland
School of Physics and Astronomy, University of Birmingham, Birmingham, United Kingdom
School of Physics, University of Bristol, Bristol, United Kingdom
School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
Physics Department, University of Lancaster, Lancaster, United Kingdom
School of Physical Sciences, University of Liverpool, Liverpool, United Kingdom
Physics and Astronomy Department, George Mason University, Fairfax, VA, United States
An Institute or an international laboratory covered by a cooperation agreement with CERN
Syracuse University, Syracuse, 13244, NY, United States
Physics Department, University of Lancaster, Lancaster, LA1 4YB, United Kingdom
INFN, Sezione di Perugia, Perugia, I-06100, Italy
TRIUMF, Vancouver, V6T 2A3, British Columbia, Canada
School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, United Kingdom
Max-Planck-Institut für Physik (Werner-Heisenberg-Institut), Garching, D-85748, Germany
CERN, European Organization for Nuclear Research, Geneva 23, CH-1211, Switzerland
Department of Physics, Technical University of Munich, München, D-80333, Germany
Institut für Kernphysik and Helmholtz Institute Mainz, Universität Mainz, Mainz, D-55099, Germany
Universität Würzburg, Würzburg, D-97070, Germany
European XFEL GmbH, Schenefeld, D-22869, Germany
School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, United Kingdom
Institut für Physik and PRISMA Cluster of Excellence, Universität Mainz, Mainz, D-55099, Germany
Dipartimento di Scienze Fisiche, Informatiche e Matematiche, Università di Modena e Reggio Emilia, Modena, I-41125, Italy
Faculty of Physics, University of Sofia, Sofia, BG-1164, Bulgaria
Scuola Superiore Meridionale e INFN, Sezione di Napoli, Napoli, I-80138, Italy
Instituto de Física, Universidad Autónoma de San Luis Potosí, San Luis Potosí, 78240, Mexico
Institut am Fachbereich Informatik und Mathematik, Goethe Universität, Frankfurt am Main, D-60323, Germany
INFN, Sezione di Roma I, Roma, I-00185, Italy
Department of Industrial Engineering, University of Roma Tor Vergata, Roma, I-00173, Italy
Department of Electronic Engineering, University of Roma Tor Vergata, Roma, I-00173, Italy
Università degli Studi del Piemonte Orientale, Vercelli, I-13100, Italy
Université Catholique de Louvain, Louvain-La-Neuve, B-1348, Belgium
Gran Sasso Science Institute, LAquila, I-67100, Italy
Universidad de Guanajuato, Guanajuato, 36000, Mexico
Charles University, Prague 1, 116 36, Czech Republic
DESY, Zeuthen, D-15738, Germany
rookhaven National Laboratory, Upton, 11973, NY, United States
INFN, Sezione di Pisa, Pisa, I-56100, Italy
Department of Physics, University of Warwick, Coventry, CV4 7AL, United Kingdom
Center for theoretical neuroscience, Columbia University, New York, 10027, NY, United States
Dipartimento di Fisica dellUniversità e INFN, Sezione di Genova, Genova, I-16146, Italy
Laboratori Nazionali di Frascati, Frascati, I-00044, Italy
School of Physical Sciences, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
Dipartimento di Fisica e Astronomia dellUniversità e INFN, Sezione di Firenze, Sesto Fiorentino, I-50019, Italy
Laboratoire Leprince Ringuet, Palaiseau, F-91120, France
SLAC National Accelerator Laboratory, Stanford University, Menlo Park, 94025, CA, United States
L. N. Gumilyov Eurasian National University, Nur-Sultan, 010000, Kazakhstan
Institute of Nuclear Research and Nuclear Energy of Bulgarian Academy of Science (INRNE-BAS), Sofia, BG-1784, Bulgaria
Université Catholique de Louvain
TRIUMF
University of British Columbia
Charles University
Aix Marseille University
Max-Planck-Institut für Physik (Werner-Heisenberg-Institut)
Institut für Physik
Dipartimento di Fisica e Scienze della Terra dellUniversità e INFN
INFN
Dipartimento di Fisica e Astronomia dellUniversità e INFN
INFN
Laboratori Nazionali di Frascati
Dipartimento di Fisica “Ettore Pancini” e INFN
Dipartimento di Fisica e Geologia dellUniversità e INFN
INFN
Dipartimento di Fisica dellUniversità e INFN
INFN
Scuola Normale Superiore e INFN
Dipartimento di Fisica
INFN
INFN
Dipartimento di Fisica dellUniversità e INFN
INFN
Instituto de Física
Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering
Faculty of Mathematics
CERN
Ecole Polytechnique Fédérale Lausanne
School of Physics and Astronomy
School of Physics
School of Physics and Astronomy
Physics Department
School of Physical Sciences
Physics and Astronomy Department
An Institute or an international laboratory covered by a cooperation agreement with CERN
Syracuse University
Physics Department
INFN
TRIUMF
School of Physics and Astronomy
Max-Planck-Institut für Physik (Werner-Heisenberg-Institut)
CERN
Department of Physics
Institut für Kernphysik and Helmholtz Institute Mainz
Universität Würzburg
European XFEL GmbH
School of Physics and Astronomy
Institut für Physik and PRISMA Cluster of Excellence
Dipartimento di Scienze Fisiche
Faculty of Physics
Scuola Superiore Meridionale e INFN
Instituto de Física
Institut am Fachbereich Informatik und Mathematik
INFN
Department of Industrial Engineering
Department of Electronic Engineering
Università degli Studi del Piemonte Orientale
Université Catholique de Louvain
Gran Sasso Science Institute
Universidad de Guanajuato
Charles University
DESY
rookhaven National Laboratory
INFN
Department of Physics
Center for theoretical neuroscience
Dipartimento di Fisica dellUniversità e INFN
Laboratori Nazionali di Frascati
School of Physical Sciences
Dipartimento di Fisica e Astronomia dellUniversità e INFN
Laboratoire Leprince Ringuet
SLAC National Accelerator Laboratory
L. N. Gumilyov Eurasian National University
Institute of Nuclear Research and Nuclear Energy of Bulgarian Academy of Science (INRNE-BAS)
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