9 research outputs found
Diffractive production through color-octet mechanism in resolved photon processes at HERA
We use the color-octet mechanism combined with the two gluon exchange model
for the diffractive production in resolved photon processes. In the
leading logarithmic approximation in QCD, we find that the diffractive
production cross section is related to the off-diagonal gluon density of the
proton, the gluon density of the photon and to the nonperturbative color-octet
matrix element of . The cross section is found to be
very sensitive to the gluon density of the photon. As a result, this process
may provide a wide window for testing the two-gluon exchange model, studying
the nature of hard diffractive factorization breaking and may be particularly
useful in studying the gluon distribution of the photon. And it may also be a
golden place to test the color-octet mechanism proposed by solving the
surplus problem at the Tevatron.Comment: Revtex, 10 pages, 4 PS figure