Quark-antiquark-gluon jets in DIS diffractive dissociation

We study the diffractive production of qqg jets with large transverse momenta in the region of large diffractive masses (small #beta#). Cross sections for transverse and longitudinal photons are obtained in the leading log 1/x_P and log 1/#beta# approximation, keeping all powers in log k_t"2/Q"2. We perform a numerical study and illustrate the angular distribution of the three jets. We also estimate the integrated diffractive three jet cross section and compare with the dijet cross section obtained before. (orig.)23 refs.Available from TIB Hannover: RA 2999(99-027) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman