TY - JOUR
T1 - Diffractive hard scattering with a coherent pomeron
AU - Collins, John C.
AU - Frankfurt, Leonid
AU - Strikman, Mark
N1 - Funding Information:
This work was supported in part by the US Department of Energy under grant DE-FG02-90ER-40577, and by the Texas National Laboratory Research Commission. We would like to thank colleagues for discussions, notably J.D. Bjorken, A. Brandt, L. Lipatov, P. Schlein, D. Soper, and G. Sterman.
PY - 1993/6/10
Y1 - 1993/6/10
N2 - Diffractive scattering involves exchange of a pomeron to make a rapidity gap. It is normally assumed that to get a hard scattering in diffraction, one may treat the pomeron as an ordinary particle, which has distributions of gluons and quarks. We show that this is not so: When we use perturbative QCD, there is a breakdown of the factorization theorem. The whole pomeron can initiate the hard scattering, even though it is not point-like. Qualitatively, but not quantitatively, this gives the same effect as a delta-function term in the gluon density in a pomeron.
AB - Diffractive scattering involves exchange of a pomeron to make a rapidity gap. It is normally assumed that to get a hard scattering in diffraction, one may treat the pomeron as an ordinary particle, which has distributions of gluons and quarks. We show that this is not so: When we use perturbative QCD, there is a breakdown of the factorization theorem. The whole pomeron can initiate the hard scattering, even though it is not point-like. Qualitatively, but not quantitatively, this gives the same effect as a delta-function term in the gluon density in a pomeron.
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U2 - 10.1016/0370-2693(93)90206-W
DO - 10.1016/0370-2693(93)90206-W
M3 - Article
AN - SCOPUS:0000766735
SN - 0370-2693
VL - 307
SP - 161
EP - 168
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 1-2
ER -