University of Bonn

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19912026

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

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947 papers · 1 filter

hep-ph2026

Resolved Photon Processes: A Tribute to Rohini Godbole

Manuel Drees

Hadrons are particles composed of elementary quarks and gluons, which have strong interactions described by Quantum Chromodynamics (QCD); examples are protons and neutrons, which b…

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-ph2026

Reconciling hadronic and partonic analyticity in $b \to s ℓℓ$ transitions

Martin Hoferichter, Bastian Kubis, Simon Mutke

Rare $B$ -meson decays mediated by $b \to s ℓℓ$ transitions constitute sensitive probes of physics beyond the Standard Model, and have triggered considerable interest due to hin…

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-ph2026

Exotic hadrons associated with $b$ -quark

Xinchen Dai, Sen Jia, Alexey Nefediev +3

Compared to charmonium-like states, exotic hadrons associated with $b$ -quark offer distinct advantages for exploring the nature of multiquark phenomena and the dynamics of the stro…

hep-ph2026★ 1 cited

Toward Precision Helicity PDFs from Global DIS and SIDIS Fits with Projected EIC Measurements

HAPS Collaboration, Hamzeh Khanpour, Maryam Soleymaninia +5

We present a new global determination of the helicity-dependent parton distribution functions (PDFs) of the proton, based on inclusive deep-inelastic scattering (DIS) and semi-incl…

hep-ph2026

Constraints on invisible $B^{+} \to K^{+} X$ decays from the Belle II $B^{+} \to K^{+} ν ν ˉ$ measurement

Lorenz Gärtner, Nikolai Krug, Thomas Kuhr +3

The Belle II measurement of the branching fraction for $B^{+} \to K^{+} ν ν ˉ$ shows a $2.7 σ$ excess over the Standard Model prediction and motivates new-physics explanations such as ax…

hep-ph2025★ 1 cited

Improved Standard-Model predictions for $η^{(')} \to ℓ^{+} ℓ^{-}$

Noah Messerli, Martin Hoferichter, Bai-Long Hoid +2

The rare decays $η^{(')} \to ℓ^{+} ℓ^{-}$ , $ℓ \in {e, μ}$ , are highly suppressed in the Standard Model, both by their chirality structure and the required loop attaching the…

hep-ph2025

Determination of $B$ -meson distribution amplitudes from $B \to π, K, D$ transition form factors

Dong-Hao Li, Cai-Dian Lü, Ulf-G. Meißner +1

Recent work on $B \to π$ , $K$ and $B \to D$ form factors from lattice QCD and light-cone sum rules has made it possible to constrain the inverse moment $λ_{B}$ of the $B$ -meson light-…

hep-ph2025

What can we learn from the radiative decays of the $D_{s 1} (2460)$ meson?

Hai-Long Fu, Feng-Kun Guo, Christoph Hanhart +1

We study the radiative decays $D_{s 1} (2460) \to γ D_{s 0}^{*} (2317)$ and $D_{s 1} (2460) \to γ D^{0} K^{+} / γ D^{+} K^{0}$ and argue that their simultaneous experimental measurement, or at least a con…

hep-ph2025★ 1 cited

Decoding the structure near the $π^{+} π^{-}$ mass threshold in $ψ (3686) \to J / ψ π^{+} π^{-}$ 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 $ψ (3686) \to J / ψ π^{+} π^{-}$ . The strong pion-pion final-state inte…

hep-ph2025★ 1 cited

Dispersive analysis of the $J / ψ \to π^{0} γ^{*}$ transition form factor with $ρ$ - $ω$ mixing effects

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

Motivated by the discrepancies noted recently between the theoretical predictions of the electromagnetic $J / ψ \to π^{0} γ^{*}$ transition form factor and the BESIII data, we reanalyze t…

hep-ph2025

Short-range production of three bottom mesons

Yong-Hui Lin, Hans-Werner Hammer, Ulf-G. Meißner

Previous investigations of the three-body dynamics of $B$ mesons have shown that no Efimov effect arises in systems composed of three $B$ and $B^{*}$ mesons. This implies that the pr…

hep-ph2025★ 2 cited

Advanced parametrisations for hadronic form factors

Nienke C. Balz, Florian Herren, Bastian Kubis +2

The rich analytic structure of hadronic form factors makes a theoretically consistent yet easily applicable parametrisation cumbersome. Consequently, most parametrisations are limi…

hep-ph2025

Model-independent mass determination of near-threshold states from short-range production

Yong-Hui Lin, Hans-Werner Hammer, Ulf-G. Meißner

We propose a novel observable for the precision measurements of a wide class of near-threshold dimer states: the short-range production rate of a dimer--spectator two-body system,…

hep-ph2025

High-energy $η^{(')} π$ photoproduction and the nature of exotic waves

Gloria Montaña, Vincent Mathieu, Vanamali Shastry +9

The observation of hybrid mesons in photoproduction experiments can provide essential insight into the inner workings of quantum chromodynamics in the strong coupling regime. In pa…

hep-ph2025

Understanding large localized CP violation in $B^{\pm} \to K^{\pm} π^{+} π^{-}$ using dispersive methods

L. A. Heuser, A. Reyes-Torrecilla, C. Hanhart +4

We utilize the universality of pion-pion ( $π π$ ) final-state interactions at small invariant masses to understand the enhanced localized CP violation in $B^{\pm} \to K^{\pm} π^{+} π^{-}$ , usin…

hep-ph2025

Chiral symmetry and its breaking

Alexey Nefediev

In addition to fundamental symmetries playing a crucial role for establishing the Standard Model of fundamental interactions, approximate symmetries provide essential insight into…

hep-ph2025★ 3 cited

Quark models: What can they teach us?

Alexey Nefediev

Quark models have a more than 60-year history and through this time they served as a powerful investigation and prediction tool in hadronic physics. In recent years, a lot of new e…

hep-ph2025

Colliders are not Testing Locality via Bell's Inequality nor Providing an Unconditional Proof of Entanglement

Steven A. Abel, Herbi K. Dreiner, Rhitaja Sengupta +1

Recently there has been an increased interest in possible tests of locality via Bell's inequalities, as well as separately tests of entanglement at colliders, in particular at the…

hep-ph2025

Calculation of the axial-vector coupling constant $g_{A}$ to two loops in covariant chiral perturbation theory

Véronique Bernard, Jambul Gegelia, Shayan Ghosh +1

We present a calculation of the leading two-loop corrections to the axial-vector coupling constant $g_{A}$ in two covariant versions of two-flavor baryon chiral perturbation theory.…

hep-ph2025

Physics beyond the Standard Model with the DSA-2000

Kim V. Berghaus, Yufeng Du, Vincent S. H. Lee +4

The upcoming Deep Synoptic Array 2000 (DSA-2000) will map the radio sky at $0.7 - 2$ GHz ( $2.9 - 8.3 μ$ eV) with unprecedented sensitivity. This will enable searches for dark matte…

hep-ph2025★ 5 cited

Resonance parameters of the vector charmoniumlike state $G (3900)$

Quanxing Ye, Zhenyu Zhang, Meng-Lin Du +3

Motivated by the updated analysis of the $G (3900)$ by the BESIII collaboration, we perform a global analysis of the cross sections of the $e^{+} e^{-} \to D D ˉ$ , $e^+e^-\to D\bar{D}^…

hep-ph2025★ 2 cited

Extracting the chiral anomaly from $e^{+} e^{-} \to 3 π$

Martin Hoferichter, Bai-Long Hoid, Bastian Kubis

The strength of the interaction of three pions and a photon, $F_{3 π}$ is predicted by the axial anomaly in terms of the pion decay constant, a relation that is frequently used to c…

Resolved Photon Processes: A Tribute to Rohini Godbole

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

Reconciling hadronic and partonic analyticity in b→sℓℓ transitions

Radiative decays of hadronic molecules: From confusion to inspiration

Exotic hadrons associated with b-quark

Toward Precision Helicity PDFs from Global DIS and SIDIS Fits with Projected EIC Measurements

Constraints on invisible B+→K+X decays from the Belle II B+→K+ννˉ measurement

Improved Standard-Model predictions for η(′)→ℓ+ℓ−

Determination of B-meson distribution amplitudes from B→π,K,D transition form factors

What can we learn from the radiative decays of the Ds1​(2460) meson?

Decoding the structure near the π+π− mass threshold in ψ(3686)→J/ψπ+π− decays

Dispersive analysis of the J/ψ→π0γ∗ transition form factor with ρ-ω mixing effects

Short-range production of three bottom mesons

Advanced parametrisations for hadronic form factors

Model-independent mass determination of near-threshold states from short-range production

High-energy η(′)π photoproduction and the nature of exotic waves

Understanding large localized CP violation in B±→K±π+π− using dispersive methods

Chiral symmetry and its breaking

Quark models: What can they teach us?

Colliders are not Testing Locality via Bell's Inequality nor Providing an Unconditional Proof of Entanglement

Calculation of the axial-vector coupling constant gA​ to two loops in covariant chiral perturbation theory

Physics beyond the Standard Model with the DSA-2000

Resonance parameters of the vector charmoniumlike state G(3900)

Extracting the chiral anomaly from e+e−→3π

Reconciling hadronic and partonic analyticity in $b \to s ℓℓ$ transitions

Exotic hadrons associated with $b$ -quark

Constraints on invisible $B^{+} \to K^{+} X$ decays from the Belle II $B^{+} \to K^{+} ν ν ˉ$ measurement

Improved Standard-Model predictions for $η^{(')} \to ℓ^{+} ℓ^{-}$

Determination of $B$ -meson distribution amplitudes from $B \to π, K, D$ transition form factors

What can we learn from the radiative decays of the $D_{s 1} (2460)$ meson?

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

Dispersive analysis of the $J / ψ \to π^{0} γ^{*}$ transition form factor with $ρ$ - $ω$ mixing effects

High-energy $η^{(')} π$ photoproduction and the nature of exotic waves

Understanding large localized CP violation in $B^{\pm} \to K^{\pm} π^{+} π^{-}$ using dispersive methods

Calculation of the axial-vector coupling constant $g_{A}$ to two loops in covariant chiral perturbation theory

Resonance parameters of the vector charmoniumlike state $G (3900)$

Extracting the chiral anomaly from $e^{+} e^{-} \to 3 π$