4.8 Article

Hard to Soft Pomeron Transition in Small-x Deep Inelastic Scattering Data Using Optimal Renormalization

Journal

PHYSICAL REVIEW LETTERS
Volume 110, Issue 4, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.041601

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Funding

  1. European Comission [PITN-GA-2010-264564]
  2. Comunidad de Madrid [HEPHACOS ESP-1473]
  3. MICINN [FPA2010-17747]
  4. German Academic Exchange Service (DAAD)
  5. U.S. Department of Energy [DE-AC02-98CH10886]
  6. BNL Laboratory Directed Research and Development'' Grant [LDRD 12-034]

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We show that it is possible to describe the effective Pomeron intercept, determined from the HERA deep inelastic scattering data at small values of Bjorken x, by using next-to-leading order Balitsky-Fadin-Kuraev-Lipatov evolution together with collinear improvements. To obtain a good description over the whole range of Q(2), we use a non-Abelian physical renormalization scheme with the Brodsky-Lepage-Mackenzie optimal scale, combined with a parametrization of the running coupling in the infrared region. DOI: 10.1103/PhysRevLett.110.041601

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