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The European Physical Journal C

, Volume 70, Issue 4, pp 983–998 | Cite as

Using HERA data to determine the infrared behaviour of the BFKL amplitude

  • H. Kowalski
  • L. N. Lipatov
  • D. A. Ross
  • G. WattEmail author
Regular Article - Theoretical Physics

Abstract

We determine the infrared behaviour of the BFKL forward amplitude for gluon–gluon scattering. Our approach, based on the discrete pomeron solution, leads to an excellent description of the new combined inclusive HERA data at low values of x (<0.01) and at the same time determines the unintegrated gluon density inside the proton, for squared transverse momenta of the gluon less than 100 GeV2. The phases of this amplitude are sensitive to the non-perturbative gluonic dynamics and could be sensitive to the presence of Beyond-the-Standard-Model particles at very high energies.

Keywords

Transverse Momentum Gluon Distribution Gluon Density BFKL Equation HERA Data 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag / Società Italiana di Fisica 2010

Authors and Affiliations

  • H. Kowalski
    • 1
  • L. N. Lipatov
    • 2
    • 3
  • D. A. Ross
    • 4
  • G. Watt
    • 5
    Email author
  1. 1.Deutsches Elektronen-Synchrotron DESYHamburgGermany
  2. 2.Petersburg Nuclear Physics InstituteSt. PetersburgRussia
  3. 3.II. Institut für Theoretische PhysikUniversität HamburgHamburgGermany
  4. 4.School of Physics and AstronomyUniversity of SouthamptonHighfieldUK
  5. 5.Theory Group, Physics DepartmentCERNGeneva 23Switzerland

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