C. Hanhart

activity

19952026

most citedHeavy quarkonium: progress, puzzles, and opportunities

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

collaborators

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76 papers · 1 filter

nucl-th2026

Comments on Baryon Transition Form Factors

Christoph Hanhart, Maxim Mai, Ulf-G. Meißner +1

We discuss in rather general terms the properties of space-like baryon transition form factors. In particular, we argue why these are necessarily complex-valued, what can be deduce…

nucl-th2025

Coupled-channel contributions to the GDH sum rule from the Jülich-Bonn approach

Carolin Schneider, Deborah Rönchen, Christoph Hanhart +1

We study the Gerasimov-Drell-Hearn (GDH) sum rule within a dynamical coupled-channel approach, the Jülich-Bonn model for light baryon resonances based on fits to an extensive data…

nucl-th2016★ 7 cited

Threshold pion production in proton-proton collisions at NNLO in chiral EFT

V. Baru, E. Epelbaum, A. A. Filin +3

The reaction $N N \to N N π$ offers a good testing ground for chiral effective field theory at intermediate energies. It challenges our understanding of the first inelastic channel i…

nucl-th2015★ 33 cited

Origin of the structures observed in $e^{+} e^{-}$ annihilation into multipion states around the $p ˉ p$ threshold

Johann Haidenbauer, Christoph Hanhart, Xian-Wei Kang +1

We analyze the origin of the structures observed in the reactions $e^{+} e^{-} \to 3 (π^{+} π^{-})$ , $2 (π^{+} π^{-} π^{0})$ , $ω π^{+} π^{-} π^{0}$ , and $e^{+} e^{-} \to 2 (π^{+} π^{-}) π^{0}$ around the antiproton-proton ($\…

nucl-th2014★ 82 cited

Photocouplings at the Pole from Pion Photoproduction

D. Rönchen, M. Döring, F. Huang +6

The reactions $γ p \to π^{0} p$ and $γ p \to π^{+} n$ are analyzed in a semi-phenomenological approach up to $E \sim 2.3$ GeV. Fits to differential cross section and single and double polariza…

nucl-th2013★ 22 cited

Effective Field Theory calculations of $N N \to N N π$

Vadim Baru, Christoph Hanhart, Fred Myhrer

In this review we present the recent advances for calculations of the reactions $N N \to N N π$ using chiral effective field theory. Discussed are the next-to-next-to leading order loo…