First results on the rare decay K → π νν¯ from the NA62 experiment at CERN
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The NA62 experiment at CERN Super Proton Synchrotron (SPS) is currently taking data to measure the ultra-rare decay K → π νν¯. This decay, whose Branching Ratio (BR) is predicted with high precision within the Standard Model (SM), is one of the best candidates to reveal the indirect effects of New Physics (NP) at the highest mass scales. The NA62 experiment is designed to measure BR (K → π νν¯) with a decay-in-flight technique, novel for this channel. NA62 took data in 2016, 2017 and 2018; statistics collected in 2016 allows NA62 to reach the SM sensitivity for this decay, reaching the single event sensitivity (SES) and showing the proof of principle of the experiment. The preliminary result on BR (K → π νν¯) from the analysis of the 2016 data set is described. © 2018 by the authors.
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The NA62 experiment at CERN Super Proton Synchrotron (SPS) is currently taking data to measure the ultra-rare decay K %2b → π %2b νν¯. This decay, whose Branching Ratio (BR) is predicted with high precision within the Standard Model (SM), is one of the best candidates to reveal the indirect effects of New Physics (NP) at the highest mass scales. The NA62 experiment is designed to measure BR (K %2b → π %2b νν¯) with a decay-in-flight technique, novel for this channel. NA62 took data in 2016, 2017 and 2018; statistics collected in 2016 allows NA62 to reach the SM sensitivity for this decay, reaching the single event sensitivity (SES) and showing the proof of principle of the experiment. The preliminary result on BR (K %2b → π %2b νν¯) from the analysis of the 2016 data set is described. © 2018 by the authors.
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funding provided via
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Biomedical Engineering Society, BMES Grant
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Bundesministerium für Bildung und Forschung, BMBF: 05H09UM5, 05H12UM5, 05H15UMCNA Grant
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CERN Grant
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Consejo Nacional de Ciencia y Tecnología, CONACYT Grant
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European Research Council, ERC: 268062, 336581 Grant
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Fonds De La Recherche Scientifique - FNRS, FNRS Grant
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Institut national de la recherche scientifique, INRS Grant
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Institutul de Fizică Atomică, IFA Grant
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Istituto Nazionale di Fisica Nucleare, INFN Grant
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Joint Institute for Nuclear Research, JINR Grant
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Ministero dell’Istruzione, dell’Università e della Ricerca, MIUR: RBFR12JF2Z Grant
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Ministerstvo Školství, Mládeže a Tělovýchovy, MŠMT Grant
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Ministry of Education and Science of the Russian Federation, Minobrnauka Grant
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Ministry of Education, Youth and Science, MEYS Grant
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Ministère de l’Enseignement Supérieur et de la Recherche Scientifique, MESRS Grant
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National Science Foundation, NSF: 1506088 Grant
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Royal Society: ST/J00412X/1, ST/M005798/1, UF0758946, UF100308 Grant
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Russian Academy of Sciences, РАН Grant
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Science and Technology Facilities Council, STFC: ST/N000463/1 Grant
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Univerzita Karlova v Praze, UK: 404716 Grant
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Research
keywords
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Flavour Physics; Kaon physics; NA62; Rare decays
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