Single Meson Photoproduction via Higher Twist Mechanism and IR Renormalons
Single pseudoscalar and vector mesons hard semi-inclusive photo-production γh → M X via higher twist (HT) mechanism is calculated using the QCD running coupling constant method. The structure of infrared renormalon singularities of the HT subprocess cross section and the Borei sum for it are found. The problem of normalization of HT process cross section in terms of the meson elm form factor is discussed.
KeywordsForm Factor Vector Meson High Twist Photoproduction Cross Section Meson Decay Constant
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- 7b.S.S. Agaev: ICTP preprint IC/95/291, September 1995, hep-ph/9611215Google Scholar