Report
Two-loop off-shell QCD amplitudes in FDR
| العنوان: | Two-loop off-shell QCD amplitudes in FDR |
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| المؤلفون: | Page, Ben, Pittau, Roberto |
| المصدر: | JHEP 1511 (2015) 183 |
| سنة النشر: | 2015 |
| المجموعة: | High Energy Physics - Phenomenology High Energy Physics - Theory |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, High Energy Physics - Theory |
| الوصف: | We link the FDR treatment of ultraviolet (UV) divergences to dimensional regularization up to two loops in QCD. This allows us to derive the one-loop and two-loop coupling constant and quark mass shifts necessary to translate infrared finite quantities computed in FDR to the MSbar renormalization scheme. As a by-product of our analysis, we solve a problem analogous to the breakdown of unitarity in the Four Dimensional Helicity (FDH) method beyond one loop. A fix to FDH is then presented that preserves the renormalizability properties of QCD without introducing evanescent quantities. Comment: 25 pages, 6 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1007/JHEP11(2015)183 |
| URL الوصول: | http://arxiv.org/abs/1506.09093 |
| رقم الانضمام: | edsarx.1506.09093 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1007/JHEP11(2015)183 |
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