2001/05/31 by F. S. Navarra, F.S. Navarra, M. Nielsen +3 · 35 citations
Physics and Astronomy · #Cross section (physics) #High-Energy Particle Collisions Research #Meson #Operator (biology) #Operator product expansion #Particle physics theoretical and experimental studies #Pseudoscalar #QCD sum rules #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quark #Sum rule in quantum mechanics #hep-ph #nucl-th
paper · pdf · doi:10.1016/s0370-2693(02)01248-0
published in Physics Letters B 529(1-2), 87-92 (Elsevier BV) · revised version accepted for publication in Phys. Lett. B
arxiv created 2002/01/28 · openalex publication_date 2002/03/01 · arxiv updated 2009/11/30 · openalex created_date 2017/10/20 · openalex updated_date 2026/08/05
The J/ψπ→ D D^*, D D, D^* D^* and D D^* cross sections as a function of √(s) are evaluated in a QCD sum rule calculation. We study the Borel sum rule for the four point function involving pseudoscalar and vector meson currents, up to dimension four in the operator product expansion. We find that our results are smaller than the J/ψπ→ charmed mesons cross sections obtained with models based on meson exchange, but are close to those obtained with quark exchange models.