Diffractive charm and jet production at HERA

Abstract

A new high precision inclusive measurement of the diffractive production of D ∗±(2010) mesons in deep inelastic scattering (DIS) in the kinematic region Q 2>1.5 GeV 2, 0.02< y <0.7, χ IP < 0.035 as well as differential dijet cross sections in low-| t| diffractive photoproduction (PHP) process in the kinematic region Q 2 <0.01 GeV 2, 165< W <240 GeV 2, χ IP < 0.03 are presented. Diffractive parton densities extracted using a NLO DGLAP QCD fit are used for comparisons with diffractive DIS and PHP dijet and open charm cross sections at HERA and the Tevatron, thus testing the factorization properties of hard diffraction.