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 (Academic Journal) › peer-review

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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

Bibliographical note

Funding Information:
Article funded by SCOAP3.

Funding Information:
(Bundesministerium für Bildung und Forschung) contracts 05H12UM5, 05H15UMCNA and 05H18UMCNA, Germany; INFN (Istituto Nazionale di Fisica Nucleare), Italy; MIUR (Ministero dell’Istruzione, dell’Università e della Ricerca), Italy; CONACyT (Consejo Na-cional de Ciencia y Tecnología), Mexico; IFA (Institute of Atomic Physics), Romania; INR-RAS (Institute for Nuclear Research of the Russian Academy of Sciences), Moscow, Russia; JINR (Joint Institute for Nuclear Research), Dubna, Russia; NRC (National Research Center) “Kurchatov Institute” and MESRF (Ministry of Education and Science of the Russian Federation), Russia; MESRS (Ministry of Education, Science, Research and Sport), Slovakia; CERN (European Organization for Nuclear Research), Switzerland; STFC (Science and Technology Facilities Council), United Kingdom; NSF (National Science Foundation) Award Number 1506088, U.S.A.; ERC (European Research Council) “UniversaLepto” advanced grant 268062, “KaonLepton” starting grant 336581, Europe.

Funding Information:
The cost of the experiment and of its auxiliary systems were supported by the funding agencies of the Collaboration Institutes. We are particularly indebted to: F.R.S.-FNRS (Fonds de la Recherche Scientifique - FNRS), Belgium; BMES (Ministry of Education, Youth and Science), Bulgaria; NSERC (Natural Sciences and Engineering Research Council), Canada; NRC (National Research Council) contribution to TRIUMF, Canada; MEYS (Ministry of Education, Youth and Sports), Czech Republic; BMBF

Publisher Copyright:
© 2019, The Author(s).

Keywords

Beyond Standard Model
Exotics
Fixed target experiments
Rare decay

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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 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 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 H. Heath and R. Page and S. Trilov",

note = "Funding Information: Article funded by SCOAP3. Funding Information: (Bundesministerium f{\"u}r Bildung und Forschung) contracts 05H12UM5, 05H15UMCNA and 05H18UMCNA, Germany; INFN (Istituto Nazionale di Fisica Nucleare), Italy; MIUR (Ministero dell{\textquoteright}Istruzione, dell{\textquoteright}Universit{\`a} e della Ricerca), Italy; CONACyT (Consejo Na-cional de Ciencia y Tecnolog{\'i}a), Mexico; IFA (Institute of Atomic Physics), Romania; INR-RAS (Institute for Nuclear Research of the Russian Academy of Sciences), Moscow, Russia; JINR (Joint Institute for Nuclear Research), Dubna, Russia; NRC (National Research Center) “Kurchatov Institute” and MESRF (Ministry of Education and Science of the Russian Federation), Russia; MESRS (Ministry of Education, Science, Research and Sport), Slovakia; CERN (European Organization for Nuclear Research), Switzerland; STFC (Science and Technology Facilities Council), United Kingdom; NSF (National Science Foundation) Award Number 1506088, U.S.A.; ERC (European Research Council) “UniversaLepto” advanced grant 268062, “KaonLepton” starting grant 336581, Europe. Funding Information: The cost of the experiment and of its auxiliary systems were supported by the funding agencies of the Collaboration Institutes. We are particularly indebted to: F.R.S.-FNRS (Fonds de la Recherche Scientifique - FNRS), Belgium; BMES (Ministry of Education, Youth and Science), Bulgaria; NSERC (Natural Sciences and Engineering Research Council), Canada; NRC (National Research Council) contribution to TRIUMF, Canada; MEYS (Ministry of Education, Youth and Sports), Czech Republic; BMBF Publisher Copyright: {\textcopyright} 2019, The Author(s).",

year = "2019",

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

language = "English",

volume = "2019",

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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 - 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 - 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 - Heath, H.

AU - Page, R.

AU - Trilov, S.

N1 - Funding Information: Article funded by SCOAP3. Funding Information: (Bundesministerium für Bildung und Forschung) contracts 05H12UM5, 05H15UMCNA and 05H18UMCNA, Germany; INFN (Istituto Nazionale di Fisica Nucleare), Italy; MIUR (Ministero dell’Istruzione, dell’Università e della Ricerca), Italy; CONACyT (Consejo Na-cional de Ciencia y Tecnología), Mexico; IFA (Institute of Atomic Physics), Romania; INR-RAS (Institute for Nuclear Research of the Russian Academy of Sciences), Moscow, Russia; JINR (Joint Institute for Nuclear Research), Dubna, Russia; NRC (National Research Center) “Kurchatov Institute” and MESRF (Ministry of Education and Science of the Russian Federation), Russia; MESRS (Ministry of Education, Science, Research and Sport), Slovakia; CERN (European Organization for Nuclear Research), Switzerland; STFC (Science and Technology Facilities Council), United Kingdom; NSF (National Science Foundation) Award Number 1506088, U.S.A.; ERC (European Research Council) “UniversaLepto” advanced grant 268062, “KaonLepton” starting grant 336581, Europe. Funding Information: The cost of the experiment and of its auxiliary systems were supported by the funding agencies of the Collaboration Institutes. We are particularly indebted to: F.R.S.-FNRS (Fonds de la Recherche Scientifique - FNRS), Belgium; BMES (Ministry of Education, Youth and Science), Bulgaria; NSERC (Natural Sciences and Engineering Research Council), Canada; NRC (National Research Council) contribution to TRIUMF, Canada; MEYS (Ministry of Education, Youth and Sports), Czech Republic; BMBF Publisher Copyright: © 2019, The Author(s).

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 - http://www.scopus.com/inward/record.url?scp=85066479984&partnerID=8YFLogxK

U2 - 10.1007/JHEP05(2019)182

DO - 10.1007/JHEP05(2019)182

M3 - Article (Academic Journal)

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 -