X. Q. Yan

collaborators

2 papers

hep-ex2026

First Measurement of the Absolute Branching Fraction of $η_{c} \to γ γ$

BESIII Collaboration, M. Ablikim, M. N. Achasov +691

We apply a tag-and-probe method to precisely measure the absolute branching fraction of the decay $η_{c} \to γ γ$ with the BESIII experiment at BEPCII. Starting with a large initial s…

hep-ex2022

Determination of U-spin breaking parameters with an amplitude analysis of the decay $D^{0} \to K_{L}^{0} π^{+} π^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +605

We present a study of the resonant structure of the decay $D^{0} \to K_{L}^{0} π^{+} π^{-}$ , using quantum-correlated $D^{0} D ˉ^{0}$ data produced at $s = 3.773$ GeV. The data sampl…

First Measurement of the Absolute Branching Fraction of ηc​→γγ

Determination of U-spin breaking parameters with an amplitude analysis of the decay D0→KL0​π+π−

First Measurement of the Absolute Branching Fraction of $η_{c} \to γ γ$

Determination of U-spin breaking parameters with an amplitude analysis of the decay $D^{0} \to K_{L}^{0} π^{+} π^{-}$