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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Search for production of an invisible dark photon in π0 decays
AU - The NA62 Collaboration
AU - Carmignani, Joe
AU - Dainton, John
AU - Jones, Roger William Lewis
AU - Ruggiero, Giuseppe
PY - 2019/5/28
Y1 - 2019/5/28
N2 - The results of a search for π0 decays to a photon and an invisible massivedark 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 π0 → 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 massivedark 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 π0 → 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
U2 - 10.1007/JHEP05(2019)182
DO - 10.1007/JHEP05(2019)182
M3 - Journal article
VL - 2019
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
SN - 1029-8479
IS - 5
M1 - 182
ER -