Two-jet production at HERA: Next-to-leading order corrections to the resolved quasi-real photon contribution

Numerical results are presented for the photoproduction of two-jet via resolved quasi-real photon at HERA in next-to-leading order (NLO) QCD. It shows that the NLO contribution is important and reliable in the two-jet invariant mass region MJJ ε [15,45] GeV and rapidity region yjjlab > −2. This may be used to explain the ZEUS results with an uncertainty of 20%. The dependences on renormalization and factorization scales are also investigated.