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19952026
most citedHeavy quarkonium: progress, puzzles, and opportunities

1.8k citations · 15.8k across the 261 of their papers we have counts for

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hep-ph2026

Born-Oppenheimer chiral effective field theory and its application to

Yu Zhang, Feng-Kun Guo, Christoph Hanhart +2

Following the discovery of the exotic state in the charmonium spectrum, the possible existence of an analogous state, , in the bottomonium sector has attracted consi…

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

A dispersive method to study CP asymmetries in hadronic multi-body decays

L. A. Heuser, A. Reyes-Torrecilla, C. Hanhart +5

We present the details of a dispersive method to construct the amplitudes for hadronic multibody decays based on the universality of pairwise hadronic final-state interactions…

hep-ph2026

Threshold cusp effects to measure masses of radiatively decaying hadrons: The mass from the spectrum

Hai-Long Fu, Xu Zhang, Feng-Kun Guo +3

Hadrons that decay predominantly into final states containing photons are notoriously difficult to detect at hadron colliders. Prominent examples are the yet-unobserved …

hep-ph2026

Scattering Theory

Christoph Hanhart, Mikhail Mikhasenko

This chapter provides an overview of the fundamental framework of scattering theory, which is widely used in particle physics to describe and interpret interactions among elementar…

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…