NLO perturbative QCD predictions for gamma gamma -> M+ M- (M=pi,K)
高能物理 - 唯象学
2009-11-11 v2 高能物理 - 实验
摘要
We report the first complete leading-twist next-to-leading-order perturbative QCD predictions for the two-photon exclusive channels gamma gamma -> 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.
引用
@article{arxiv.hep-ph/0607069,
title = {NLO perturbative QCD predictions for gamma gamma -> M+ M- (M=pi,K)},
author = {Goran Duplancic and Bene Nizic},
journal= {arXiv preprint arXiv:hep-ph/0607069},
year = {2009}
}
备注
4 pages, 4 figures; parts rewritten, references and comments added, version as accepted for publication