TY - JOUR
T1 - Search for dark photon decays to μ+μ− at NA62
AU - NA62 Collaboration
AU - Fry, John
AU - Gonnella, Francesco
AU - Goudzovski, Evgueni
AU - Henshaw, Jack
AU - Kenworthy, Chandler
AU - Lazzeroni, Cristina
AU - Parkinson, Chris
AU - Romano, Angela
AU - Sanders, Jack
AU - Sergi, Antonino
AU - Shaikhiev, Artur
AU - Tomczak, Adam
PY - 2023/9/6
Y1 - 2023/9/6
N2 - The NA62 experiment at CERN, designed to study the ultra-rare decay K+ → π+νν¯, has also collected data in beam-dump mode. In this configuration, dark photons may be produced by protons dumped on an absorber and reach a decay volume beginning 80 m downstream. A search for dark photons decaying in flight to μ+μ− pairs is reported, based on a sample of 1.4 × 1017 protons on dump collected in 2021. No evidence for a dark photon signal is observed. A region of the parameter space is excluded at 90% CL, improving on previous experimental limits for dark photon masses between 215 and 550 MeV/c2.
AB - The NA62 experiment at CERN, designed to study the ultra-rare decay K+ → π+νν¯, has also collected data in beam-dump mode. In this configuration, dark photons may be produced by protons dumped on an absorber and reach a decay volume beginning 80 m downstream. A search for dark photons decaying in flight to μ+μ− pairs is reported, based on a sample of 1.4 × 1017 protons on dump collected in 2021. No evidence for a dark photon signal is observed. A region of the parameter space is excluded at 90% CL, improving on previous experimental limits for dark photon masses between 215 and 550 MeV/c2.
U2 - 10.1007/JHEP09(2023)035
DO - 10.1007/JHEP09(2023)035
M3 - Article
SN - 1126-6708
VL - 2023
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
M1 - 35
ER -