Physics beyond the standard model with kaons at NA62

on behalf of NA62 Collaboration

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

Abstract

The NA62 experiment at CERN Super Proton Synchrotron was designed to measure BR(K+ → π+νv̄) with an in-fight technique, never used before for this measurement. This decay is characterised by a very precise prediction in the Standard Model. Its branching ratio, which is expected to be less than 10-10, is one of the best candidates to indicate indirect effects of new physics beyond SM at the highest mass scales. NA62 result on K+ → π+νv̄ from the full 2016 data set is described. Also a search for an invisible dark photon A′ has been performed, exploiting the efficient photon-veto capability and high resolution tracking of the NA62. The signal stems from the chain K+ → π+π0 followed by π0 → A′γ. No significant statistical excess has been identified. Upper limits on the dark photon coupling to the ordinary photon as a function of the dark photon mass have been set, improving on the previous limits over the mass range 60 - 110 MeV/c2.

Original languageEnglish
Title of host publicationProceedings of the 15th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon
EditorsCurtis Meyer, Reinhard A. Schumacher
PublisherAmerican Institute of Physics (AIP)
ISBN (Electronic)9780735420083
DOIs
Publication statusPublished - 27 Jul 2020
Event15th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon, MENU 2019 - Pittsburgh, United States
Duration: 2 Jun 20197 Jun 2019

Publication series

NameAIP Conference Proceedings
Volume2249
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference15th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon, MENU 2019
CountryUnited States
CityPittsburgh
Period2/06/197/06/19

Bibliographical note

Publisher Copyright:
© 2020 Author(s).

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

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