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5 papers

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

First measurement of the absolute branching fractions of nonleptonic decays and test of the rule

BESIII Collaboration, M. Ablikim, M. N. Achasov +689

The paper reports the first absolute measurements of the branching fractions for the Σ⁺ → p π⁰ and Σ⁺ → n π⁺ decays using BESIII J/ψ data, and tests the ΔI = 1/2 rule in Σ hyperon…

hep-ex2025

First observation of and

BESIII Collaboration, M. Ablikim, M. N. Achasov +658

By analysing annihilation data corresponding to an integrated luminosity of 368.48~pb collected at the centre-of-mass energies of and ~GeV…

hep-ex2025

Search for via

BESIII Collaboration, M. Ablikim, M. N. Achasov +688

Utilizing events collected with the BESIII detector at the BEPCII collider, we search for the hadronic transition process $χ_{c1} \to π…

hep-ex2025

Search for a bound state of near threshold

BESIII Collaboration, M. Ablikim, M. N. Achasov +698

We search for a possible bound state, denoted as , via the process for the first time. T…