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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Higher-order QCD corrections to H -> b(b)over-bar from rational approximants

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Boito, Diogo [1, 2] ; London, Cristiane Y. [1] ; Masjuan, Pere [3, 4]
Total Authors: 3
[1] Univ Sao Paulo, Inst Fis Sao Carlos, CP 369, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Vienna, Fac Phys, Boltzmanngasse 5, A-1090 Vienna - Austria
[3] Univ Autonoma Barcelona, Grp Fis Teor, Dept Fis, Campus UAB, E-08193 Bellaterra, Barcelona - Spain
[4] Barcelona Inst Sci & Technol BIST, Inst Fis Altes Energies IFAE, Campus UAB, E-08193 Bellaterra, Barcelona - Spain
Total Affiliations: 4
Document type: Journal article
Source: Journal of High Energy Physics; n. 1 JAN 12 2022.
Web of Science Citations: 0

We use rational approximants to study missing higher orders in the massless scalar-current quark correlator. We predict the yet unknown six-loop coefficient of its imag inary part, related to Gamma(H -> b (b) over bar), to be c(5) = -6900 +/- 1400. With this result, the perturbative series becomes almost insensitive to renormalization scale variations and the intrinsic QCD truncation uncertainty is tiny. This confirms the expectation that higher-order loop computations for this quantity will not be required in the foreseeable future, as the uncer tainty in Gamma(H -> b (b) over bar) will remain largely dominated by the Standard Model parameters. (AU)

FAPESP's process: 15/20689-9 - Precise determination of fundamental QCD parameters
Grantee:Diogo Rodrigues Boito
Support Opportunities: Research Grants - Young Investigators Grants
FAPESP's process: 18/21050-0 - Higher-order QCD in the Higgs decay to bottom quarks
Grantee:Cristiane Yumi Mise London
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 20/15532-1 - Quark-antiquark interaction: the top quark mass and the gluon propagator in the infrared regime
Grantee:Cristiane Yumi Mise London
Support Opportunities: Scholarships in Brazil - Doctorate