2012/10/25 by Irina Balakireva, Balakireva, Irina, Wolfgang Lucha +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph #nucl-th
paper · pdf · doi:10.48550/arxiv.1210.6849
3 pages, 3 figures, contributed to "Quark Confinement and the Hadron Spectrum X" (8 - 12 October 2012, TUM Campus Garching, Munich, Germany), to appear in the proceedings
openalex publication_date 2012/10/25 · arxiv created 2012/10/31 · arxiv updated 2012/11/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Confronted with some surprising claims about experimentally measured or theoretically expected dependencies on the involved momentum transfer of various form factors of pseudoscalar mesons, we reassess the present status of these quantities by means of QCD sum rules. This approach provides well-developed and very efficient tools to relate in an analytical manner the parameters of QCD to the empirical properties of hadrons. Within this framework, we show that a few theoretical findings for the pion elastic form factor and one experimental result for the pion-to-photon transition form factor are at odds with rather general fundamental considerations.