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.

UR - http://www.scopus.com/inward/record.url?scp=0000766735&partnerID=8YFLogxK

U2 - 10.1016/0370-2693(93)90206-W

DO - 10.1016/0370-2693(93)90206-W

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AN - SCOPUS:0000766735

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

SN - 0370-2693

IS - 1-2

ER -