Single meson photoproduction and IR renormalons

Details Single meson photoproduction and IR renormalons Single meson photoproduction and IR renormalons

1996-11-08

arxiv.org/abs/hep-ph/9611283v1

Eur.Phys.J.C1:321-331,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, 8 figures

Scientific paper

10.1007/s100520050085

Single pseudoscalar and vector mesons inclusive photoproduction $\gamma h\rightarrow MX$ via higher twist mechanism is calculated using the QCD running coupling constant method. It is proved that in the context of this method a higher twist contribution to the photoproduction cross section cannot be normalized in terms of the meson electromagnetic form factor. The structure of infrared renormalon singularities of the higher twist subprocess cross section and the resummed expression (the Borel sum) for it are found. Comparisons are made with earlier results, as well as with leading twist cross section. Phenomenological effects of studied contributions for $\pi, K, \rho$-meson photoproduction are discussed.

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