Next-to-leading BFKL phenomenology of forward-jet cross sections at HERA

We show that the forward-jet measurements performed at HERA allow for a detailed study of corrections due to next-to-leading logarithms (NLL) in the Balitsky–Fadin–Kuraev–Lipatov (BFKL) approach. While the description of the dσ/dx data shows small sensitivity to NLL-BFKL corrections, these can be te...

Full description

Saved in:
Bibliographic Details
Published inThe European physical journal. C, Particles and fields Vol. 55; no. 2; pp. 259 - 272
Main Authors Kepka, O., Marquet, C., Peschanski, R., Royon, C.
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer-Verlag 01.05.2008
Springer Nature B.V
Subjects
Astronomy
Astrophysics and Cosmology
Cross-sections
Elementary Particles
Hadrons
Heavy Ions
Logarithms
Measurement Science and Instrumentation
Nuclear Energy
Nuclear Physics
Phenomenology
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Regular Article - Theoretical Physics
String Theory
Impact Factor
Hard Cross Section
Photon Impact Factor
Proton Structure Function
Online AccessGet full text

Cover

More Information
Summary:We show that the forward-jet measurements performed at HERA allow for a detailed study of corrections due to next-to-leading logarithms (NLL) in the Balitsky–Fadin–Kuraev–Lipatov (BFKL) approach. While the description of the dσ/dx data shows small sensitivity to NLL-BFKL corrections, these can be tested by the triple differential cross section d 3 σ/dxdk T 2 dQ 2 recently measured. These data can be successfully described using a renormalization-group improved NLL kernel, while the standard next-to-leading-order QCD or leading-logarithm BFKL approaches fail to describe the same data in the whole kinematic range. We present a detailed analysis of the NLL scheme and renormalization-scale dependences and also discuss the photon impact factors.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-008-0587-5