Feng-Kun Guo

activity

20242026

most citedDispersive analysis of the $J/Ï\toÏ^0 Î³^\ast$ transition form factor with

I ¨ 

I ¨ 

mixing effects

1 citations · 2 across the 3 of their papers we have counts for

collaborators

11 papers

hep-ph2026★ 1 cited

Dispersive analysis of the $J/Ï\toÏ^0 Î³^\ast$ transition form factor with $I ¨ $ - $I ¨ $ mixing effects

Xiong-Hui Cao, Feng-Kun Guo, Christoph Hanhart +1

Motivated by the discrepancies noted recently between the theoretical predictions of the electromagnetic $J/Ï\to Ï^0 Î³^*$ transition form factor and the BESIII data, we reanalyz…

hep-ph2026★ 1 cited

Decoding the structure near the $I ¨ ^{+} I ¨ ^{-}$ mass threshold in $I ¨ (3686) \to J / I ¨ I ¨ ^{+} I ¨ ^{-}$ decays

Yun-Hua Chen, Xiang-Kun Dong, Feng-Kun Guo +2

In light of recent high-precision data taken by the BESIII Collaboration, we reconsider the dipion transition $I ¨ (3686) \to J / I ¨ I ¨ ^{+} I ¨ ^{-}$ . The strong pion-pion final-state…

hep-ph2026

Radiative decays of hadronic molecules: From confusion to inspiration

Feng-Kun Guo, Christoph Hanhart, Alexey Nefediev

Radiative decays of hadronic states provide an essential source of information that can facilitate deciphering their nature and properties. However, a lot of confusion concerning r…

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 $e^{+} e^{-} \to I^^{3} (D^{0} D ˉ^{0} I ¨ ^{0} / J / I ¨ I ¨ ^{+} I ¨ ^{-})$ and LHCb data on $B^{+} \to K^{+} (J / I ¨ I ¨ ^{+} I ¨ ^{-})$ to precisely determine the properties…

hep-lat2025

Exotics in the $I ¨ D$ system

Eric B. Gregory, Feng-Kun Guo, Christoph Hanhart +2

In this proceedings we consider several states, namely the $D_{s 0}^{*} (2317)$ , $D_{s 1} (2460)$ , $D_{0}^{*} (2300)$ and $D_{1} (2430)$ , which appear to defy description as simple quark-ant…

hep-lat2025

Exclusion of a diquark-antidiquark structure for the lightest positive-parity charmed mesons

Eric B. Gregory, Feng-Kun Guo, Christoph Hanhart +2

The nature of low-lying scalar and axial-vector charmed mesons has been debated for decades, with hadronic molecular and compact tetraquark models being prominent candidates. These…

Dispersive analysis of the $J/Ï\toÏ^0 Î³^\ast$ transition form factor with I¨-I¨ mixing effects

Decoding the structure near the I¨+I¨− mass threshold in I¨(3686)→J/I¨I¨+I¨− decays