Teng Ji

activity

20242026

collaborators

4 papers

hep-ph2026

Amplified Isospin Breaking from Coupled-Channel Dynamics Near Threshold

Xiang-Kun Dong, Feng-Kun Guo, Christoph Hanhart +2

We identify the dynamical origin of amplified isospin breaking in near-threshold states. Using a pole-residue-based measure defined directly from the pole couplings, rather than fr…

hep-ph2026

Vector charmonium(-like) states in the energy range of 4.1-4.6 GeV

Xiang-Kun Dong, Vadim Baru, Leon von Detten +5

The spectrum of vector charmonium(-like) states in the 4.1\dash4.6~GeV energy region exhibits a long-standing tension between inclusive and exclusive measurements. While the inclus…

hep-ph2025

Precise determination of the properties of $X (3872)$ and of its isovector partner $W_{c 1}$

Teng Ji, Xiang-Kun Dong, Feng-Kun Guo +2

We perform a simultaneous fit to BESIII data on $e^{+} e^{-} \to γ (D^{0} D ˉ^{0} π^{0} / J / ψ π^{+} π^{-})$ and LHCb data on $B^{+} \to K^{+} (J / ψ π^{+} π^{-})$ to precisely determine the properties of the $…

hep-ph2024

Dispersive analysis of the isospin breaking in the $X (3872) \to J / ψ π^{+} π^{-}$ and $X (3872) \to J / ψ π^{+} π^{0} π^{-}$ decays

Jorgivan Morais Dias, Teng Ji, Xiang-Kun Dong +5

We analyze the latest LHCb data on the $π^{+} π^{-}$ spectrum in the isospin-violating $X (3872) \to J / ψ π^{+} π^{-}$ decay, based on dispersion theory to deal with the $π π$ final state interac…

Amplified Isospin Breaking from Coupled-Channel Dynamics Near Threshold

Vector charmonium(-like) states in the energy range of 4.1-4.6 GeV

Precise determination of the properties of X(3872) and of its isovector partner Wc1​

Dispersive analysis of the isospin breaking in the X(3872) → J/ψπ+π− and X(3872) → J/ψπ+π0π− decays

Precise determination of the properties of $X (3872)$ and of its isovector partner $W_{c 1}$

Dispersive analysis of the isospin breaking in the $X (3872) \to J / ψ π^{+} π^{-}$ and $X (3872) \to J / ψ π^{+} π^{0} π^{-}$ decays