Next-to-Leading-Order Perturbative-QCD Predictions forγγ→M+M−(M=π,K)

2006/07/31 by G. Duplančić, Goran Duplancic, Bene Nizic +1 · 12 citations
Physics and Astronomy · #Algorithm #Amplitude #Computer science #High-Energy Particle Collisions Research #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Perturbative QCD #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Scattering #hep-ex #hep-ph

paper · pdf · doi:10.1103/physrevlett.97.142003

published in Physical Review Letters 97(14), 142003 (American Physical Society) · 4 pages, 4 figures; parts rewritten, references and comments added, version as accepted for publication

arxiv created 2006/09/06 · openalex publication_date 2006/10/06 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We report the first complete leading-twist next-to-leading-order perturbative-QCD predictions for the two-photon exclusive channels gammagamma-->M(+)M(-) (M=pi,K) at large momentum transfer. The asymptotic distribution amplitude is utilized as a candidate form for the nonperturbative dynamical input. Comparison of the obtained results with the existing experimental data does not provide sufficiently clear evidence to support the applicability of the hard-scattering approach at currently accessible energies.

Citations

• QCD Effective Couplings in Minkowskian and Euclidean Domains
• γγ→ππ, KK: Leading term QCD vs handbag model
• Reduction method for dimensionally regulatedone-loop N-point Feynman integrals
• Soft contribution to the pion form factor from light-cone QCD sum rules
• The πγ transition form factor and the pion wave function
• Complete next-to-leading order perturbative QCD prediction for the pion electromagnetic form factor
• Unbiased analysis of CLEO data at NLO and the pion distribution amplitude
• Commensurate scale relations in quantum chromodynamics

Cited by

• Exclusive production of large invariant mass pion pairs in ultraperipheral ultrarelativistic heavy ion collisions