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BFKL and High Energy Phenomenology

BFKL and High Energy Phenomenology. Victor T. Kim. St. Petersburg Nuclear Physics Institute. Gatchina. Outline. BFKL: introduction BFKL: jet production BFKL: gamma-gamma collisions summary. LO BFKL: Fadin, Kuraev & Lipatov (75-77) Balitsky & Lipatov (78)

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BFKL and High Energy Phenomenology

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  1. BFKL and High Energy Phenomenology Victor T. Kim St. Petersburg Nuclear Physics Institute Gatchina

  2. Outline • BFKL: introduction • BFKL: jet production • BFKL: gamma-gamma collisions • summary Victor T. Kim St.Petersburg Nuclear Physics Instiutute

  3. LO BFKL: Fadin, Kuraev & Lipatov (75-77) Balitsky & Lipatov (78) Summing leading Log(s) in all orders: σ ~ (s/s0)ω Bottom lines: ω≈ 0.5 too big! no running αS s0 ? Victor T. Kim St.Petersburg Nuclear Physics Instiutute

  4. Victor T. Kim St.Petersburg Nuclear Physics Instiutute

  5. NLO BFKL with BLM resummation Summing β0-terms into the scale of running coupling Brodsky, Fadin, VK, Lipatov & Pivovarov (98-99) Victor T. Kim St.Petersburg Nuclear Physics Instiutute

  6. Mueller-Navelet factorization Mueller & Navelet (87) Victor T. Kim St.Petersburg Nuclear Physics Instiutute

  7. kT-factorization scheme Catani, Hauptmann & Marchesini; Ciafaloni (90-94) Levin, Ryskin, Shabelsky & Shuvaev (91) Collins & K. Ellis (91) Victor T. Kim St.Petersburg Nuclear Physics Instiutute

  8. BFKL-factorization VK & Pivovarov (96-98) Victor T. Kim St.Petersburg Nuclear Physics Instiutute

  9. BFKL: dijet production Victor T. Kim St.Petersburg Nuclear Physics Instiutute

  10. Dijet azymuthal decorrelation VK & Pivovarov (96,98) Victor T. Kim St.Petersburg Nuclear Physics Instiutute

  11. Dijet K-factor Victor T. Kim St.Petersburg Nuclear Physics Instiutute

  12. Jet xT-scaling ratio VK & Pivovarov (98) Victor T. Kim St.Petersburg Nuclear Physics Instiutute

  13. Gamma-gamma collisions Gribov,Flolov & Lipatov (70) LO BFKL Balitsky & Lipatov (78) Brodsky,Hautmann & Soper (97) Bartels et al (98) De Roeck et al (2001) Victor T. Kim St.Petersburg Nuclear Physics Instiutute

  14. Gamma-gamma collisions LO BFKL: Balitsky & Lipatov (78) Brodsky,Hautmann & Soper (96-97) Bartels et al (97) De Roeck et al (99) NLO BFKL: VK, Lipatov & Pivovarov (99) Brodsky, Fadin, VK, Lipatov & Pivovarov (01-02) Kwiecinski & Motyka (01) Victor T. Kim St.Petersburg Nuclear Physics Instiutute

  15. Brodsky, Fadin, VK, Lipatov & Pivovarov (01-02) Victor T. Kim St.Petersburg Nuclear Physics Instiutute

  16. Linear colliders Victor T. Kim St.Petersburg Nuclear Physics Instiutute

  17. Gamma-gamma to heavy quarks LO BFKL Balitsky & Lipatov (78) Kwiecinski & Motyka (99) Bartels, Ewerz et al (99) Ginzburg (01) NLO BFKL VK & Lipatov few nb Victor T. Kim St.Petersburg Nuclear Physics Instiutute

  18. Summary • NLO BFKL becomes noticeable in gamma-gamma at high energies • Jet production ? • Heavy quarks ? • Monte Carlo generators needed • BFKL factorization ? • Unitarity corrections ? Victor T. Kim St.Petersburg Nuclear Physics Instiutute

  19. Victor T. Kim St.Petersburg Nuclear Physics Instiutute

  20. Victor T. Kim St.Petersburg Nuclear Physics Instiutute

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