Singluarity and Gauge Link in Light Cone Gauge Jianhua Gao Shandong Unversity at Weihai J.H. Gao, “Singularities, boundary conditions and gauge link in the light cone gauge ” arXiv:1309.4970 J.H. Gao, “A Derivation of the Gauge Link in Light Cone Gauge ” PRD 83, 094017(2011) The 9th Circum-Pan-Pacific Symposium on High-Energy Spin Physics October 28-31, 2013, Shandong University, Jinan, China
Singluarity and Gauge Link in Light Cone Gauge. Jianhua Gao Shandong Unversity at Weihai. J.H. Gao , “Singularities, boundary conditions and gauge link in the light cone gauge ” arXiv:1309.4970 - PowerPoint PPT Presentation
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Singluarity and Gauge Linkin Light Cone Gauge
Jianhua Gao
Shandong Unversity at Weihai
J.H. Gao, “Singularities, boundary conditions and gauge link in the light cone gauge ” arXiv:1309.4970 J.H. Gao, “A Derivation of the Gauge Link in Light Cone Gauge ” PRD 83, 094017(2011)
The 9th Circum-Pan-Pacific Symposium on High-Energy Spin PhysicsOctober 28-31, 2013, Shandong University, Jinan, China
Outline
• Introduction• Singularity and regularization in light cone gauge• Derivation of the gauge link in light cone guage• Summary
Collinear quark distribution function
Collinear quark distribution function in covariant gauge:
Collinear quark distribution function in light cone gauge:
Gauge link along the light cone direction: All fields are fixed at
TMD quark distribution function
Transverse momentum dependent quark distribution function (TMD):
Gauge link in TMD in SIDIS:
X. Ji and F. Yuan Phys.Lett.B543,66 (2002); A. Belitsky, X. Ji and F. Yuan Nucl. Phys. B 656,165 (2003)
All fields are fixed at
Sivers function
Some works on transverse gauge link
• X. Ji and F. Yuan Phys.Lett.B543,66 (2002)
• A. Belitsky, X. Ji and F. Yuan Nucl. Phys. B 656,165 (2003)
• D. Boer, P. Mulders, F. Pijlman Nucl.Phys.B667,201(2003)