Deep inelastic scattering, QCD, and generalized vector dominance - INSPIRE

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Deep inelastic scattering, QCD, and generalized vector dominance

G. Cvetic
(
- Bielefeld U. and
- Dortmund U.
)
,
D. Schildknecht
(
- Bielefeld U.
)
,
A. Shoshi
(
- Bielefeld U.
)

Aug, 1999

36 pages

Published in:

Eur.Phys.J.C 13 (2000) 301-314

e-Print:

hep-ph/9908473 [hep-ph]

DOI:

10.1007/s100520000301

Report number:

BI-TP-99-28

View in:

ADS Abstract Service

reference search43 citations

Citations per year

Abstract:

We provide a formulation of generalised vector dominance (GVD) for low-x deep-inelastic scattering that explicitly incorporates the

{\gamma}^{\ast} \to q{\bar q}

transition and a QCD-inspired ansatz for the

(q{\bar q})p

forward-scattering amplitude. The destructive interference originally introduced in off-diagonal GVD is recovered in the present formulation and traced back to the generic structure of two-gluon-exchange as incorporated into the notion of colour transparency. Asymptotically, the transverse photoabsorption cross section behaves as (ln Q^2)/Q^2, implying a logarithmic violation of scaling for F_2, while the longitudinal-to-transverse ratio decreases as 1/ln Q^2.

electron p: deep inelastic scattering
small-x
quantum chromodynamics
vector dominance
Compton scattering: forward scattering
electron positron: annihilation
photon p: interaction
photon: transverse
photon: longitudinal
photon: absorption

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Figures(12)

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