NNLO zero-jettiness beam and soft functions to higher orders in the dimensional-regularization parameter $$\epsilon $$ ϵ
Abstract We present the calculation of the next-to-next-to-leading order (NNLO) zero-jettiness beam and soft functions, up to the second order in the expansion in the dimensional regularization parameter $$\epsilon $$ ϵ . These higher order terms are needed for the computation of the next-to-next-to...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-06-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-020-8047-y |
| Summary: | Abstract We present the calculation of the next-to-next-to-leading order (NNLO) zero-jettiness beam and soft functions, up to the second order in the expansion in the dimensional regularization parameter $$\epsilon $$ ϵ . These higher order terms are needed for the computation of the next-to-next-to-next-to-leading order ($$\hbox {N}^3\hbox {LO}$$ N3LO ) zero-jettiness soft and beam functions. As a byproduct, we confirm the $${\mathcal {O}}{(\epsilon ^0)}$$ O(ϵ0) results for NNLO beam and soft functions available in the literature by Gaunt et al. (JHEP 4:113, 2014), Gaunt et al. (JHEP 8:20, 2014), Boughezal et al. (Phys Rev D 96:34001, 2017), Monni et al. (JHEP 8:10, 2011) and Kelley et al. (Phys Rev D 84:45022, 2011). |
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| ISSN: | 1434-6044 1434-6052 |