Search for production of an invisible dark photon in π 0 decays

The NA62 Collaboration

doi:10.1007/JHEP05(2019)182

Search for production of an invisible dark photon in π ⁰ decays

The NA62 Collaboration

Research output: Contribution to journal › Article › peer-review

Abstract

The results of a search for π⁰ 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 π⁰ 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/c². The present results are interpreted in terms of an upper limit of the branching ratio of the electro-weak decay π→ γνν¯ , improving the current limit by more than three orders of magnitude.

Original language	English
Article number	182
Journal	Journal of High Energy Physics
Volume	2019
Issue number	5
DOIs	https://doi.org/10.1007/JHEP05(2019)182
Publication status	Published - 1 May 2019

Keywords

Beyond Standard Model
Exotics
Fixed target experiments
Rare decay

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10.1007/JHEP05(2019)182

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title = "Search for production of an invisible dark photon in π 0 decays",

abstract = "The results of a search for π0 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 π0 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/c2. The present results are interpreted in terms of an upper limit of the branching ratio of the electro-weak decay π→ γνν¯ , improving the current limit by more than three orders of magnitude.",

keywords = "Beyond Standard Model, Exotics, Fixed target experiments, Rare decay",

author = "\{The NA62 Collaboration\} and \{Cortina Gil\}, E. and A. Kleimenova and E. Minucci and S. Padolski and P. Petrov and A. Shaikhiev and R. Volpe and G. Georgiev and V. Kozhuharov and L. Litov and T. Numao and Y. Petrov and B. Velghe and D. Bryman and J. Fu and T. Husek and J. Jerhot and K. Kampf and M. Zamkovsky and R. Aliberti and G. Khoriauli and J. Kunze and D. Lomidze and L. Peruzzo and M. Vormstein and R. Wanke and P. Dalpiaz and M. Fiorini and I. Neri and A. Norton and F. Petrucci and H. Wahl and \{Cotta Ramusino\}, A. and A. Gianoli and E. Iacopini and G. Latino and M. Lenti and A. Parenti and A. Bizzeti and F. Bucci and A. Antonelli and G. Lanfranchi and G. Mannocchi and S. Martellotti and M. Moulson and T. Spadaro and F. Ambrosino and T. Capussela and M. Corvino and E. Maurice",

note = "Publisher Copyright: {\textcopyright} 2019, The Author(s).",

year = "2019",

month = may,

day = "1",

doi = "10.1007/JHEP05(2019)182",

language = "English",

volume = "2019",

journal = "Journal of High Energy Physics",

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TY - JOUR

T1 - Search for production of an invisible dark photon in π 0 decays

AU - The NA62 Collaboration

AU - Cortina Gil, E.

AU - Kleimenova, A.

AU - Minucci, E.

AU - Padolski, S.

AU - Petrov, P.

AU - Shaikhiev, A.

AU - Volpe, R.

AU - Georgiev, G.

AU - Kozhuharov, V.

AU - Litov, L.

AU - Numao, T.

AU - Petrov, Y.

AU - Velghe, B.

AU - Bryman, D.

AU - Fu, J.

AU - Husek, T.

AU - Jerhot, J.

AU - Kampf, K.

AU - Zamkovsky, M.

AU - Aliberti, R.

AU - Khoriauli, G.

AU - Kunze, J.

AU - Lomidze, D.

AU - Peruzzo, L.

AU - Vormstein, M.

AU - Wanke, R.

AU - Dalpiaz, P.

AU - Fiorini, M.

AU - Neri, I.

AU - Norton, A.

AU - Petrucci, F.

AU - Wahl, H.

AU - Cotta Ramusino, A.

AU - Gianoli, A.

AU - Iacopini, E.

AU - Latino, G.

AU - Lenti, M.

AU - Parenti, A.

AU - Bizzeti, A.

AU - Bucci, F.

AU - Antonelli, A.

AU - Lanfranchi, G.

AU - Mannocchi, G.

AU - Martellotti, S.

AU - Moulson, M.

AU - Spadaro, T.

AU - Ambrosino, F.

AU - Capussela, T.

AU - Corvino, M.

AU - Maurice, E.

PY - 2019/5/1

Y1 - 2019/5/1

N2 - The results of a search for π0 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 π0 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/c2. The present results are interpreted in terms of an upper limit of the branching ratio of the electro-weak decay π→ γνν¯ , improving the current limit by more than three orders of magnitude.

AB - The results of a search for π0 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 π0 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/c2. The present results are interpreted in terms of an upper limit of the branching ratio of the electro-weak decay π→ γνν¯ , improving the current limit by more than three orders of magnitude.

KW - Beyond Standard Model

KW - Exotics

KW - Fixed target experiments

KW - Rare decay

UR - https://www.scopus.com/pages/publications/85066479984

U2 - 10.1007/JHEP05(2019)182

DO - 10.1007/JHEP05(2019)182

M3 - Article

AN - SCOPUS:85066479984

SN - 1126-6708

VL - 2019

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 5

M1 - 182

ER -

Search for production of an invisible dark photon in π ⁰ decays

Abstract

Keywords

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