Spread of the gluon k{sub t} distribution and the determination of the saturation scale at hadron colliders in the resummed next-to-leading logarithmic BFKL evolution

doi:https://doi.org/10.1103/PhysRevD.70.074013

Title: Spread of the gluon k{sub t} distribution and the determination of the saturation scale at hadron colliders in the resummed next-to-leading logarithmic BFKL evolution

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Abstract

The transverse momentum distribution of soft hadrons and jets that accompany central hard-scattering production at hadron colliders is of great importance, since it has a direct bearing on the ability to separate new-physics signals from Standard Model backgrounds. We compare the predictions for the gluonic k{sub t}-distribution using two different approaches: resummed Next-to-Leading-Logarithm (NLL) Balitsky-Fadin-Kuraev-Lipatov (BFKL) and Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) evolution. We find that as long as the initial and final virtualities (k{sub t}) along the emission chain are not too close to each other, the NLL resummed BFKL results do not differ significantly from those obtained using standard DGLAP evolution. The saturation momentum Q{sub s}(x), calculated within the resummed BFKL approach, grows with 1/x even slower than in the leading-order DGLAP case.

Authors:

Khoze, V A; Ryskin, M G ^[1]; Martin, A D ^[1]; Stirling, W J ^[1]

Department of Physics and Institute for Particle Physics Phenomenology, University of Durham, DH1 3LE (United Kingdom)

Publication Date:: 2004-10-01

OSTI Identifier:: 20705337

Resource Type:: Journal Article

Journal Name:: Physical Review. D, Particles Fields

Additional Journal Information:: Journal Volume: 70; Journal Issue: 7; Other Information: DOI: 10.1103/PhysRevD.70.074013; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2821

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; COMPARATIVE EVALUATIONS; DISTRIBUTION; EMISSION; GLUONS; HADRONS; JET MODEL; QUANTUM CHROMODYNAMICS; SCATTERING; STANDARD MODEL; TRANSVERSE MOMENTUM

Citation Formats


                    Khoze, V A, Ryskin, M G, Petersburg Nuclear Physics Institute, Gatchina, St. Petersburg, 188300, Martin, A D, Stirling, W J, and Department of Mathematical Sciences, University of Durham, DH1 3LE. Spread of the gluon k{sub t} distribution and the determination of the saturation scale at hadron colliders in the resummed next-to-leading logarithmic BFKL evolution.  United States: N. p., 2004. 
        Web.  doi:10.1103/PhysRevD.70.074013.

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                    Khoze, V A, Ryskin, M G, Petersburg Nuclear Physics Institute, Gatchina, St. Petersburg, 188300, Martin, A D, Stirling, W J, & Department of Mathematical Sciences, University of Durham, DH1 3LE. Spread of the gluon k{sub t} distribution and the determination of the saturation scale at hadron colliders in the resummed next-to-leading logarithmic BFKL evolution.  United States.  https://doi.org/10.1103/PhysRevD.70.074013

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                    Khoze, V A, Ryskin, M G, Petersburg Nuclear Physics Institute, Gatchina, St. Petersburg, 188300, Martin, A D, Stirling, W J, and Department of Mathematical Sciences, University of Durham, DH1 3LE. Fri .  
        "Spread of the gluon k{sub t} distribution and the determination of the saturation scale at hadron colliders in the resummed next-to-leading logarithmic BFKL evolution".  United States.  https://doi.org/10.1103/PhysRevD.70.074013.

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@article{osti_20705337,

  title        = {Spread of the gluon k{sub t} distribution and the determination of the saturation scale at hadron colliders in the resummed next-to-leading logarithmic BFKL evolution},

  author       = {Khoze, V A and Ryskin, M G and Petersburg Nuclear Physics Institute, Gatchina, St. Petersburg, 188300 and Martin, A D and Stirling, W J and Department of Mathematical Sciences, University of Durham, DH1 3LE},

  abstractNote = {The transverse momentum distribution of soft hadrons and jets that accompany central hard-scattering production at hadron colliders is of great importance, since it has a direct bearing on the ability to separate new-physics signals from Standard Model backgrounds. We compare the predictions for the gluonic k{sub t}-distribution using two different approaches: resummed Next-to-Leading-Logarithm (NLL) Balitsky-Fadin-Kuraev-Lipatov (BFKL) and Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) evolution. We find that as long as the initial and final virtualities (k{sub t}) along the emission chain are not too close to each other, the NLL resummed BFKL results do not differ significantly from those obtained using standard DGLAP evolution. The saturation momentum Q{sub s}(x), calculated within the resummed BFKL approach, grows with 1/x even slower than in the leading-order DGLAP case.},

  doi          = {10.1103/PhysRevD.70.074013},

  url          = {https://www.osti.gov/biblio/20705337},
  journal      = {Physical Review. D, Particles Fields},

  issn         = {0556-2821},

  number       = 7,

  volume       = 70,

  place        = {United States},

  year         = {2004},

  month        = {10}

}

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