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From the 1 of 58 linked papers with an AI index.

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20242026
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58 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

Amplitude analysis and branching fraction measurement of the decay

BESIII Collaboration, M. Ablikim, M. N. Achasov +703

An amplitude analysis of the decay is performed to determine the relative magnitudes and phases of different intermediate processes. The analysis uses $e^…

hep-ex2026

Observation of the decays into

BESIII Collaboration, M. Ablikim, M. N. Achasov +780

By analyzing events collected with the BESIII detector operating at the BEPCII collider, the decays $χ_{cJ} \to pK^{-}\barΛη+ \mathr…

hep-ex2026

Evidence of

BESIII Collaboration, M. Ablikim, M. N. Achasov +766

We report the first evidence for the hadronic transition using a data sample of collected at ~GeV with the BESIII…

hep-ex2026

Strong and electromagnetic amplitudes, direct and isospin asymmetries in the decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +766

Using annihilation data collected at 26 center-of-mass energy points between 3000.00 and with the BESIII detector, corresponding to a total integrated…

hep-ex2026

Unexpected large relative strong phase and search for isospin breaking and asymmetries in $J/ψ\to K^*(892)\bar K

BESIII Collaboration, M. Ablikim, M. N. Achasov +766

Using a direct scan of 26 energy points near the resonance, we perform the first measurement of the relative phase between the strong and electromagnetic ampli…