Search for an invisible vector boson from π0 decays at NA62

NA62 Collaboration

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

Abstract

The search for an invisible vector boson from π0 decays at the NA62 experiment at CERN Super Proton Syncrotron (SPS) is discussed. Within the proposed models for physics beyond the SM, hidden sectors consisting of new, light, weakly-coupled particles are a particularly compelling possibility. Thanks to the high beam intensity, the extremely good performance of the photon detection systems, particle identification system and the detectors timing, NA62 is suited to search for these new particles. Here the search for a dark photon from π0 decays using the K+ → π+π0, π0 → A0γ decay chain is illustrated. The result from the analysis of a sub-sample of 2016 data is reported, corresponding to 1% of the full statistics collected in 2016-2018. A new upper limit on the π0 → A0γ branching ratio has been set as a function of the dark photon mass, thus producing a new upper limit on the dark photon coupling parameter [1].

Original languageEnglish
Title of host publicationProceedings of Science
Volume364
Publication statusPublished - 2019
Event2019 European Physical Society Conference on High Energy Physics, EPS-HEP 2019 - Ghent, Belgium
Duration: 10 Jul 201917 Jul 2019

Publication series

NameProceedings of Science
PublisherSISSA
ISSN (Print)1824-8039

Conference

Conference2019 European Physical Society Conference on High Energy Physics, EPS-HEP 2019
CountryBelgium
CityGhent
Period10/07/1917/07/19

Bibliographical note

Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).

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