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Cortina Gil, E.;
Kleimenova, A.;
Minucci, E.;
Padolski, S.;
Petrov, P.;
Shaikhiev, A.;
Volpe, R.;
Georgiev, G.;
Kozhuharov, V.;
Litov, L.;
Numao, T.;
Petrov, Y.;
Velghe, B.;
Bryman, D.;
Fu, J.;
Husek, T.;
Jerhot, J.;
Kampf, K.;
Zamkovsky, M.;
Aliberti, R.;
Khoriauli, G.;
Kunze, J.;
Lomidze, D.;
Peruzzo, L.;
[...]
Search for production of an invisible dark photon in π0 decays
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- Medientyp: E-Artikel
- Titel: Search for production of an invisible dark photon in π0 decays
- Beteiligte: Cortina Gil, E.; Kleimenova, A.; Minucci, E.; Padolski, S.; Petrov, P.; Shaikhiev, A.; Volpe, R.; Georgiev, G.; Kozhuharov, V.; Litov, L.; Numao, T.; Petrov, Y.; Velghe, B.; Bryman, D.; Fu, J.; Husek, T.; Jerhot, J.; Kampf, K.; Zamkovsky, M.; Aliberti, R.; Khoriauli, G.; Kunze, J.; Lomidze, D.; Peruzzo, L.; [...]
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Erschienen:
Springer Science and Business Media LLC, 2019
- Erschienen in: Journal of High Energy Physics, 2019 (2019) 5
- Sprache: Englisch
- DOI: 10.1007/jhep05(2019)182
- ISSN: 1029-8479
- Entstehung:
- Anmerkungen:
- Beschreibung: Abstract The results of a search for π 0 decays to a photon and an invisible massive dark photon at the NA62 experiment at the CERN SPS are reported. From a total of 4.12 × 108 tagged π 0 mesons, no signal is observed. Assuming a kinetic-mixing interaction, limits are set on the dark photon coupling to the ordinary photon as a function of the dark photon mass, improving on previous searches in the mass range 60–110 MeV/c 2. The present results are interpreted in terms of an upper limit of the branching ratio of the electro-weak decay $$ {\pi}^0\to \gamma \nu \overline{\nu} $$ π 0 → γ ν ν ¯ , improving the current limit by more than three orders of magnitude.
- Zugangsstatus: Freier Zugang