R. Guo

collaborators

4 papers

hep-ex2026

First Measurement of the Relative Phase between Proton Psionic Form Factors

BESIII Collaboration, M. Ablikim, M. N. Achasov +754

The relative phase between the time-like form factors of the proton is a crucial observable for a complete understanding of its internal structure, yet it has remained unmeasured d…

hep-ex2026

Amplitude Analysis of the Isospin-Violating Decay $J / ψ \to γ η π^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +759

Using $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ events collected with the BESIII detector, we perform the first amplitude analysis of the process $J / ψ \to γ η π^{0}$ . The decay is dominated b…

hep-ex2026

Search for the radiative decays $D^{0} \to γ K ˉ_{1} (1270)^{0}$ and $D^{+} \to γ K_{1} (1270)^{+}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +680

A search for the radiative decays $D^{0} \to γ K ˉ_{1} (1270)^{0}$ and $D^{+} \to γ K_{1} (1270)^{+}$ is conducted using $20.3 fb^{- 1}$ of $e^{+} e^{-}$ annihilation data collected at the cen…

hep-ex2026

Cross Section Measurements of $n ˉ p \to K^{+} K^{-} π^{+} (π^{0})$ via Antineutrons Produced by $J / ψ \to p π^{-} n ˉ$ Decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +759

Based on a novel method for producing antineutrons via $J / ψ$ decays, we report a study of $n ˉ p$ inelastic scattering into final states containing kaons. The analysis uses $(10…

First Measurement of the Relative Phase between Proton Psionic Form Factors

Amplitude Analysis of the Isospin-Violating Decay J/ψ→γηπ0

Search for the radiative decays D0→γKˉ1​(1270)0 and D+→γK1​(1270)+

Cross Section Measurements of nˉp→K+K−π+(π0) via Antineutrons Produced by J/ψ→pπ−nˉ Decays

Amplitude Analysis of the Isospin-Violating Decay $J / ψ \to γ η π^{0}$

Search for the radiative decays $D^{0} \to γ K ˉ_{1} (1270)^{0}$ and $D^{+} \to γ K_{1} (1270)^{+}$

Cross Section Measurements of $n ˉ p \to K^{+} K^{-} π^{+} (π^{0})$ via Antineutrons Produced by $J / ψ \to p π^{-} n ˉ$ Decays