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Search for a feebly interacting particle X in the decay K + → π + X

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dc.contributor.authorCortina, Gil, E.
dc.contributor.authorKleimenova, A.
dc.contributor.authorMinucci, E.
dc.contributor.authorPadolski, S.
dc.contributor.authorKudenko, Y.
dc.contributor.authorКуденко, Юрий Григорьевич
dc.date.accessioned2024-11-29T21:55:56Z
dc.date.available2024-11-29T21:55:56Z
dc.date.issued2021
dc.description.abstract© 2021, The Author(s).A search for the K+ → π+X decay, where X is a long-lived feebly interacting particle, is performed through an interpretation of the K+ → π+νν¯ analysis of data collected in 2017 by the NA62 experiment at CERN. Two ranges of X masses, 0–110 MeV/c2 and 154–260 MeV/c2, and lifetimes above 100 ps are considered. The limits set on the branching ratio, BR(K+ → π+X), are competitive with previously reported searches in the first mass range, and improve on current limits in the second mass range by more than an order of magnitude.
dc.identifier.citationSearch for a feebly interacting particle X in the decay K + → π + X / Cortina, Gil, E. [et al.] // Journal of High Energy Physics. - 2021. - 2021. - № 3. - 10.1007/JHEP03(2021)058
dc.identifier.doi10.1007/JHEP03(2021)058
dc.identifier.urihttps://www.doi.org/10.1007/JHEP03(2021)058
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85104929935&origin=resultslist
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/24848
dc.relation.ispartofJournal of High Energy Physics
dc.titleSearch for a feebly interacting particle X in the decay K + → π + X
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue3
oaire.citation.volume2021
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relation.isAuthorOfPublication.latestForDiscovery3751163c-7e93-4ea0-9549-f690efd6753e
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