BFKL and High Energy Phenomenology
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HSQCD 2004 May 19, 2004 BFKL and High Energy Phenomenology Victor T. Kim Gatchina St. Petersburg Nuclear Physics Institute
description
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) - PowerPoint PPT Presentation
Transcript of BFKL and High Energy Phenomenology
HSQCD 2004May 19, 2004
BFKL and High Energy
PhenomenologyVictor T. Kim
Gatchina
St. Petersburg Nuclear Physics Institute
HSQCD 2004May 19, 2004
Victor T. KimSt.Petersburg Nuclear Physics Instiutute
Outline
• BFKL: introduction• BFKL: jet production• BFKL: gamma-gamma collisions• summary
HSQCD 2004May 19, 2004
Victor T. KimSt.Petersburg Nuclear Physics Instiutute
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 ?
HSQCD 2004May 19, 2004
Victor T. KimSt.Petersburg Nuclear Physics Instiutute
HSQCD 2004May 19, 2004
Victor T. KimSt.Petersburg Nuclear Physics Instiutute
NLO BFKL with BLM resummation
Brodsky, Fadin, VK, Lipatov & Pivovarov (98-99)
Summing β0-terms into the scale of running coupling
HSQCD 2004May 19, 2004
Victor T. KimSt.Petersburg Nuclear Physics Instiutute
Mueller-Navelet factorization
Mueller & Navelet (87)
HSQCD 2004May 19, 2004
Victor T. KimSt.Petersburg Nuclear Physics Instiutute
kT-factorization scheme
Catani, Hauptmann & Marchesini; Ciafaloni (90-94)Levin, Ryskin, Shabelsky & Shuvaev (91)Collins & K. Ellis (91)
HSQCD 2004May 19, 2004
Victor T. KimSt.Petersburg Nuclear Physics Instiutute
BFKL-factorization
VK & Pivovarov (96-98)
HSQCD 2004May 19, 2004
Victor T. KimSt.Petersburg Nuclear Physics Instiutute
BFKL: dijet production
HSQCD 2004May 19, 2004
Victor T. KimSt.Petersburg Nuclear Physics Instiutute
Dijet azymuthal decorrelation
VK & Pivovarov (96,98)
HSQCD 2004May 19, 2004
Victor T. KimSt.Petersburg Nuclear Physics Instiutute
Dijet K-factor
HSQCD 2004May 19, 2004
Victor T. KimSt.Petersburg Nuclear Physics Instiutute
Jet xT-scaling ratio
VK & Pivovarov (98)
HSQCD 2004May 19, 2004
Victor T. KimSt.Petersburg Nuclear Physics Instiutute
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)
HSQCD 2004May 19, 2004
Victor T. KimSt.Petersburg Nuclear Physics Instiutute
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)
HSQCD 2004May 19, 2004
Victor T. KimSt.Petersburg Nuclear Physics Instiutute
Brodsky, Fadin, VK, Lipatov & Pivovarov (01-02)
HSQCD 2004May 19, 2004
Victor T. KimSt.Petersburg Nuclear Physics Instiutute
Linear colliders
HSQCD 2004May 19, 2004
Victor T. KimSt.Petersburg Nuclear Physics Instiutute
Gamma-gamma to heavy quarks
LO BFKLBalitsky & Lipatov (78)Kwiecinski & Motyka (99)Bartels, Ewerz et al (99)Ginzburg (01)
NLO BFKLVK & Lipatov
few nb
HSQCD 2004May 19, 2004
Victor T. KimSt.Petersburg Nuclear Physics Instiutute
Summary
• NLO BFKL becomes noticeable in gamma-gamma at high energies • Jet production ?• Heavy quarks ?• Monte Carlo generators needed • BFKL factorization ? • Unitarity corrections ?
HSQCD 2004May 19, 2004
Victor T. KimSt.Petersburg Nuclear Physics Instiutute
HSQCD 2004May 19, 2004
Victor T. KimSt.Petersburg Nuclear Physics Instiutute
