I Updates on the experiments X17

[kodama]

well Positron Annihilation into Dark Matter Experiment run 4 and MEG II

X17 masses between 16.5 MeV/c2 and 17.1 MeV/c2. The
Atomki X17 hypothesis was tested and a 6.2% (1.5σ ) p-
value was obtained. Improved sensitivity to the particle pro-
duction can be achieved with higher statistics to be collected
at the 1030 keV resonance

Search for the X17 particle in 7Li(p,e+e−)8Be7Li(p,e+e−)8Be processes with the MEG II detector

MEG IICollaboration
•

K. Afanaciev(
Dubna, JINR
)

et al.
(Nov 12, 2024)

e-Print:
2411.07994 [nucl-ex]