Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 4, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP04(2021)254
Keywords
NLO Computations; QCD Phenomenology
Categories
Funding
- ERC [REINVENT-714788]
- Fondazione Cariplo and Regione Lombardia [20172070]
- MIUR through the FARE grant [R18ZRBEAFC]
- CINECA award under the ISCRA initiative
- U.S. Department of Energy Office of Science User Facility [DE-AC02-05CH11231]
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In this paper, the NNLL' resummed 2-jettiness distribution for decays of the Standard Model Higgs boson to a bb-quark pair and to gluons is presented. The calculation relies on a factorisation formula derived using Soft-Collinear Effective Theory, where large logarithms of the 2-jettiness are resummed by renormalisation group evolution. The resummed predictions are matched to the fixed-order NNLO result using the Geneva framework, extending the validity of the results and providing a fully exclusive NNLO event generator matched to the Pythia8 parton shower.
We present the NNLL ' resummed 2-jettiness distribution for decays of the Standard Model Higgs boson to a bb-quark pair and to gluons. The calculation exploits a factorisation formula derived using Soft-Collinear Effective Theory, in which large logarithms of the 2-jettiness are resummed by renormalisation group evolution of the hard, soft and jet contributions to the differential decay rate. We match the resummed predictions to the fixed-order NNLO result using the Geneva framework, extending the validity of the results to all values of the resolution variable and providing a fully exclusive NNLO event generator matched to the Pythia8 parton shower.
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