How to measure the intercept of the BFKL pomeron at HERA

Abstract

Determination of the intercept of the BFKL pomeron is one of the pressing issues in the high energy physics. Earlier we have shown that, at the dipole size $r=r_{\Delta }=(0.1-0.2)$f, the dipole cross section $\sigma (x,r)$ which is a solution of the generalized BFKL equation, exhibits a precocious asymptotic behavior $σ(x,r)\propto \left({1\over x}\right)^{Δ_{\Pom}}$. In this paper we discuss how measuring $F_L(x,Q^2)$ and $\partial F_T(x,Q^2)/\partial \log Q^2$ at $Q^2=(10-40)$GeV${}^2$ and $Q^2=(2-10)$GeV${}^2$, respectively, one can probe $\sigma (x,r_{\Delta })$ and directly determine the intercept $Δ_{\Pom}$ of the BFKL pomeron in the HERA experiments.

10 pages, 2 figures upon the request from [email protected], Juelich preprint KFA-IKP(Th)-1994-10, 28 February 1994

References in corpus (5)

• Deep inelastic scattering at HERA and the BFKL pomeron
• BFKL evolution and universal structure function at very small $x$
• The $s$-channel approach to Lipatov's pomeron and hadronic cross sections
• The spectrum and solutions of the generalized BFKL equation for total cross section
• The BFKL and GLDAP regimes for the perturbative QCD pomeron

Cited by in corpus (21)

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• Diffractive Vector Meson Production at HERA: from Soft to Hard QCD
• The diffraction cone for exclusive vector meson production in deep inelastic scattering
• Excitation of open charm and factorization breaking in rapidity gap events at HERA
• Renormalons at Low x
• Nonperturbative γ^* p Interaction in the Diffractive Regime
• Diffractive photon dissociation in the saturation regime from the Good and Walker picture
• The BFKL-Regge Phenomenology of Deep Inelastic Scattering
• How open charm production and scaling violations probe the rightmost hard BFKL pole exchange
• The BFKL-Regge factorization and $F_2^b$, $F_2^c$, $F_L$ at HERA: physics implications of nodal properties of the BFKL eigenfunctions
• Geometric Scaling in a Symmetric Saturation Model
• Beauty, charm and $F_L$ at HERA: new data vs. early predictions
• Investigating F_L(x,Q2) at fixed energy in the color dipole formalism
• The Running BFKL: Resolution of Caldwell's Puzzle
• Diffractive beauty photoproduction as a short distance probe of QCD pomeron
• Physical limits in the Color Dipole Model Bounds
• Precocious asymptopia for charm from the running BFKL
• Physics at Low x
• t-channel Approach to Reggeon Interactions in QCD