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JHEP08(2016)083.pdf | 576.94 kB | Adobe PDF | 見る/開く |
タイトル: | Collinearly improved JIMWLK evolution in Langevin form |
著者: | Hatta, Yoshitaka Iancu, Edmond |
著者名の別形: | 八田, 佳孝 |
キーワード: | Perturbative QCD Resummation |
発行日: | Aug-2016 |
出版者: | Springer Nature |
誌名: | Journal of High Energy Physics |
巻: | 2016 |
論文番号: | 83 |
抄録: | The high-energy evolution of Wilson line operators, which at leading order is described by the Balitsky-JIMWLK equations, receives large radiative corrections en-hanced by single and double collinear logarithms at next-to-leading order and beyond. We propose a method for resumming such logarithmic corrections to all orders, at the level of the Langevin formulation of the JIMWLK equation. The ensuing, collinearly-improved Langevin equation features generalized Wilson line operators, which depend not only upon rapidity (the logarithm of the longitudinal momentum), but also upon the transverse size of the color neutral projectile to which the Wilson lines belong. This additional scale dependence is built up during the evolution, via the condition that the successive emissions of soft gluons be ordered in time. The presence of this transverse scale in the Langevin equation furthermore allows for the resummation of the one-loop running coupling corrections. |
著作権等: | © The Author(s) 2016 JHEP is an open-access journal funded by SCOAP3 and licensed under CC BY 4.0 |
URI: | http://hdl.handle.net/2433/218575 |
DOI(出版社版): | 10.1007/JHEP08(2016)083 |
出現コレクション: | 学術雑誌掲載論文等 |
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