Zero-jettiness resummation for top-quark pair production at the LHC
| Autor: | Simone Alioli, Alessandro Broggio, Matthew A. Lim |
|---|---|
| Přispěvatelé: | Alioli, S, Broggio, A, Lim, M |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Nuclear and High Energy Physics
higher-order FOS: Physical sciences QC770-798 pair production [top] High Energy Physics - Experiment High Energy Physics - Experiment (hep-ex) High Energy Physics - Phenomenology (hep-ph) effective field theory colliding beams [hadron] factorization NLO Computations Nuclear and particle physics. Atomic energy. Radioactivity quantum chromodynamics jet production ddc:530 top pair production hadron hadron interaction hadron: colliding beams High Energy Physics::Phenomenology resolution QCD Phenomenology production [jet] High Energy Physics - Phenomenology higher-order 1 CERN LHC Coll jet: production resummation higher-order 0 NLO Computation renormalization group top: pair production |
| Zdroj: | Journal of High Energy Physics, Vol 2022, Iss 1, Pp 1-40 (2022) Journal of High Energy Physics Journal of high energy physics 01(1), 066 (2022). doi:10.1007/JHEP01(2022)066 |
| ISSN: | 1029-8479 |
| DOI: | 10.3204/PUBDB-2021-04484 |
| Popis: | Journal of high energy physics 01(1), 066 (2022). doi:10.1007/JHEP01(2022)066 We study the resummation of the 0-jettiness resolution variable $ \mathcal{T} _{0}$ for the top-quark pair production process in hadronic collisions. Starting from an effective theory framework we derive a factorisation formula for this observable which allows its resummation at any logarithmic order in the $ \mathcal{T} _{0}$ ��� 0 limit. We then calculate the $ \mathcal{O} $(��$_{s}$) corrections to the soft function matrices and, by employing renormalisation group equation methods, we obtain the ingredients for the resummation formula up to next-to-next-to-leading logarithmic (NNLL) accuracy. We study the impact of these corrections to the 0-jettiness distribution by comparing predictions at different accuracy orders: NLL, NLL���, NNLL and approximate NNLL��� ($ {\mathrm{NNLL}}_{\mathrm{a}}^{\prime } $). We match these results to the corresponding fixed order calculations both at leading order and next-to-leading order for the t$ \overline{t} $+jet production process, obtaining the most accurate prediction of the 0-jettiness distribution for the top-quark pair production process at $ {\mathrm{NNLL}}_{\mathrm{a}}^{\prime } $+NLO accuracy. Published by SISSA, [Trieste] |
| Databáze: | OpenAIRE |
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