Balitskiǐ-Fadin-Kuraev-Lipatov equation versus data from DESY HERA

Bojak, I. ORCID: https://orcid.org/0000-0003-1765-3502 and Ernst, M. (1996) Balitskiǐ-Fadin-Kuraev-Lipatov equation versus data from DESY HERA. Physical Review D, 53 (1). pp. 80-88. ISSN 1550-2368 doi: 10.1103/PhysRevD.53.80

Abstract/Summary

The BFKL equation and the kT-factorization theorem are used to obtain predictions for F2 in the small Bjo/rken-x region over a wide range of Q2. The dependence on the parameters, especially on those concerning the infrared region, is discussed. After a background fit to recent experimental data obtained at DESY HERA and at Fermilab (E665 experiment) we find that the predicted, almost Q2 independent BFKL slope λ≳0.5 appears to be too steep at lower Q2 values. Thus there seems to be a chance that future HERA data can distinguish between pure BFKL and conventional field theoretic renormalization group approaches. © 1995 The American Physical Society.