Evolution of high-mass diffraction from the light quark valence component of the pomeron

Details Evolution of high-mass diffraction from the light quark valence component of the pomeron Evolution of high-mass diffraction from the light quark valence component of the pomeron

2004-08-09

arxiv.org/abs/hep-ph/0408113v2

JETP Lett. 80 (2004) 371-376; Pisma Zh.Eksp.Teor.Fiz. 80 (2004) 423-428

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 2 figures, the oublished version. The slight numerical errors corrected, all conclusions are retained

Scientific paper

10.1134/1.1830650

We analyze the contribution from excitation of the $(q\bar q)(f\bar f),(q\bar q)g_1...g_n(f\bar f)$ Fock states of the photon to high mass diffraction in DIS. We show that the large $Q^2$ behavior of this contribution can be described by the DLLA evolution from the non-perturbative $f\bar f$ valence state of the pomeron. Although of higher order in pQCD, the new contribution to high-mass diffraction is comparable to that from the excitation of the $q\bar q g$ Fock state of the photon.

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