Hadronic Form Factors: Combining QCD Calculations with Analyticity

Abstract

I discuss recent applications of QCD light-cone sum rules to various form factors of pseudoscalar mesons. In this approach both soft and hard contributions to the form factors are taken into account. Combining QCD calculation with the analyticity of the form factors, one enlarges the region of accessible momentum transfers.

12 pages, 3 figures, Talk at the Workshop "Shifmania, Crossing the boundaries: Gauge dynamics at strong coupling", May 14-17,2009, Minneapolis, USA; table entry and reference updated

References in corpus (10)

• Measurement of the gamma gamma* --> pi0 transition form factor
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• Improved measurements of D meson semileptonic decays to pi and K mesons
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• B, Bs -> K form factors: an update of light-cone sum rule results
• Testing QCD Sum Rules on the Light-Cone in D->(pi,K) l nu Decays
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• |Vub| from exclusive semileptonic B to pi decays revisited
• Persistent Challenges of Quantum Chromodynamics

Cited by in corpus (8)

• $B\to \pi \ell {\nu }_l$ Width and $|V_{ub}|$ from QCD Light-Cone Sum Rules
• Measurement of the gamma gamma* --> eta and gamma gamma* --> eta' transition form factors
• Theoretical and Phenomenological Constraints on Form Factors for Radiative and Semi-Leptonic B-Meson Decays
• Axial anomaly as a collective effect of meson spectrum
• Transition Form Factors and Mixing of Pseudoscalar Mesons from Anomaly Sum Rule
• Pion transition form factor at the two-loop level vis-à-vis experimental data
• Matching lightcone- and anomaly-sum-rule predictions for the pion-photon transition form factor
• Study of the $B_c$ $\to$ $B_s\pi$ decay with the perturbative QCD approach