Resummation of Next-to-Leading Non-Global Logarithms at the LHC
Fuente:
arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2023
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| _version_ | 1866913274031767552 |
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| author | Becher, Thomas Schalch, Nicolas Xu, Xiaofeng |
| author_facet | Becher, Thomas Schalch, Nicolas Xu, Xiaofeng |
| contents | In cross sections with angular cuts, an intricate pattern of enhanced higher-order corrections known as non-global logarithms arises. The leading logarithmic terms were computed numerically two decades ago, but the resummation of subleading non-global logarithms remained a challenge that we solve in this Letter using renormalization group methods in effective field theory. To achieve next-to-leading logarithmic accuracy, we implement the two-loop anomalous dimension governing the resummation of non-global logarithms into a large-$N_c$ parton shower framework, together with one-loop matching corrections. As a first application, we study the interjet energy flow in $e^+e^-$ annihilation into two jets. We then present, for the first time, resummed predictions at next-to-leading logarithmic accuracy for a gap-between-jets observable at hadron colliders. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_02283 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Resummation of Next-to-Leading Non-Global Logarithms at the LHC Becher, Thomas Schalch, Nicolas Xu, Xiaofeng High Energy Physics - Phenomenology In cross sections with angular cuts, an intricate pattern of enhanced higher-order corrections known as non-global logarithms arises. The leading logarithmic terms were computed numerically two decades ago, but the resummation of subleading non-global logarithms remained a challenge that we solve in this Letter using renormalization group methods in effective field theory. To achieve next-to-leading logarithmic accuracy, we implement the two-loop anomalous dimension governing the resummation of non-global logarithms into a large-$N_c$ parton shower framework, together with one-loop matching corrections. As a first application, we study the interjet energy flow in $e^+e^-$ annihilation into two jets. We then present, for the first time, resummed predictions at next-to-leading logarithmic accuracy for a gap-between-jets observable at hadron colliders. |
| title | Resummation of Next-to-Leading Non-Global Logarithms at the LHC |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2307.02283 |