From the 1 of 3 linked papers with an AI index.
3 papers
hep-ex2026
Measurement of the double Dalitz decay
BESIII Collaboration, M. Ablikim, M. N. Achasov +689
The BESIII experiment measured the rare decay of the eta meson into two electron-positron pairs, determining its branching fraction to be about 2.6 × 10⁻⁵.
hep-ex2026
Measurement of branching fractions of and
BESIII Collaboration, M. Ablikim, M. N. Achasov +685
By analyzing collision data corresponding to an integrated luminosity of 7.33~fb collected with the BESIII detector at center-of-mass energies ranging from 4.128 to…
hep-ex2026
Study of in the amplitude analysis of
BESIII Collaboration, M. Ablikim, M. N. Achasov +772
We present the first amplitude analysis and branching fraction measurement of decay. The analysis uses a dataset corresponding to an in…