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Precise determination of fundamental QCD parameters

Abstract

The precise knowledge of fundamental Quantum Chromodynamics (QCD) parameters is essential to precision calculations in particle physics. Several of them can be determined through the sound theoretical description of hadronic tau decays combined with experimental data obtained at LEP (CERN). In 2014, the group responsible for the ALEPH data published a re-analysis of the data for hadronic tau decays. The first goal of this research project is to refine the determination of alpha_s --- the strong coupling --- combining the recent theoretical developments with the data sets from ALEPH and OPAL collaborations. Other aspects of the theoretical description will also be assessed, e.g., low-energy constants, the contribution of condensates, and violations of quark-hadron duality. In our work, it will also be important to investigate more fundamental theoretical aspects of perturbative QCD, such as the use of the renormalization group. In parallel, other research lines, linked to LHC physics should also be explored. First, the precise theoretical description of hadronic interactions in three body decays of D and B mesons. Finally, we should study experimental constraints on anomalous couplings of the Higgs boson in the context of the dimension 6 effective lagragian. This research project should contribute to establish Particle Physics Phenomenology as a research line at the IFSC-USP. (AU)

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VEICULO: TITULO (DATA)
VEICULO: TITULO (DATA)

Scientific publications (17)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
BOITO, DIOGO; GOLTERMAN, MAARTEN; KESHAVARZI, ALEXANDER; MALTMAN, KIM; NOMURA, DAISUKE; PERIS, SANTIAGO; TEUBNER, THOMAS. Strong coupling from e(+)e(-) -> hadrons below charm. Physical Review D, v. 98, n. 7, . (15/20689-9)
PERIS, SANTIAGO; BOITO, DIOGO; GOLTERMAN, MAARTEN; MALTMAN, KIM. The case for duality violations in the analysis of hadronic tau decays. MODERN PHYSICS LETTERS A, v. 31, n. 30, . (15/20689-9)
BOITO, DIOGO; CAPRINI, IRINEL. Towards tests of quark-hadron duality with functional analysis and spectral function data. Physical Review D, v. 95, n. 7, . (15/20689-9)
BOITO, DIOGO; GOLTERMAN, MAARTEN; MALTMAN, KIM; PERIS, SANTIAGO. Strong coupling from hadronic tau decays: A critical appraisal. Physical Review D, v. 95, n. 3, . (15/20689-9)
BOITO, DIOGO; GOLTERMAN, MAARTEN; MALTMAN, KIM; PERIS, SANTIAGO. alpha s analyses from hadronic tau decays with OPAL and ALEPH data. MODERN PHYSICS LETTERS A, v. 31, n. 26, . (15/20689-9)
BOITO, DIOGO; CAPRINI, IRINEL; GOLTERMAN, MAARTEN; MALTMAN, KIM; PERIS, SANTIAGO. Hyperasymptotics and quark-hadron duality violations in QCD. Physical Review D, v. 97, n. 5, . (15/20689-9)
BOITO, DIOGO; OLIANI, FABIO. Renormalons in integrated spectral function moments and alpha(s) extractions. Physical Review D, v. 101, n. 7, . (15/20689-9)
BOITO, DIOGO; MATEU, VICENT. Precise determination of alpha(s) from relativistic quarkonium sum rules. Journal of High Energy Physics, n. 3, . (18/14967-4, 15/20689-9)
BOITO, DIOGO; MATEU, VICENT; RODRIGUES, MARCUS V.. Small-momentum expansion of heavy-quark correlators in the large-beta(0) limit and alpha(s) extractions. Journal of High Energy Physics, n. 8, . (15/20689-9, 18/14967-4, 19/16957-9)
BOITO, DIOGO; GOLTERMAN, MAARTEN; MALTMAN, KIM; PERIS, SANTIAGO; RODRIGUES, V, MARCUS; SCHAAF, WILDER. Strong coupling from an improved tau vector isovector spectral function. Physical Review D, v. 103, n. 3, . (15/20689-9, 19/16957-9)
BOITO, DIOGO; GOLTERMAN, MAARTEN; MALTMAN, KIM; PERIS, SANTIAGO. Evidence against naive truncations of the OPE from e(+) e(-) -> hadrons below charm. Physical Review D, v. 100, n. 7, . (15/20689-9)
BOITO, D.; DEDONDER, J. -P.; EL-BENNICH, B.; ESCRIBANO, R.; KAMINSKI, R.; LESNIAK, L.; LOISEAU, B.. Parametrizations of three-body hadronic B- and D-decay amplitudes in terms of analytic and unitary meson-meson form factors. Physical Review D, v. 96, n. 11, . (16/03154-7, 15/20689-9)
BOITO, DIOGO; LONDON, CRISTIANE Y.; MASJUAN, PERE. Higher-order QCD corrections to H -> b(b)over-bar from rational approximants. Journal of High Energy Physics, n. 1, . (15/20689-9, 18/21050-0, 20/15532-1)
D. BOITO; L. N. S. DE ANDRADE; G. DE SOUSA; R. GAMA; C. Y. M. LONDON. On Maxwell’s electrodynamics in two spatial dimensions. Revista Brasileira de Ensino de Física, v. 42, . (15/20689-9)
BHARUCHA, AOIFE; BOITO, DIOGO; MEAUX, CEDRIC. Disentangling QCD and new physics in D -> pi l(+)l(-). Journal of High Energy Physics, n. 4, . (15/20689-9)
BOITO, DIOGO; JAMIN, MATTHIAS; MIRAVITLLAS, RAMON. Scheme Variations of the QCD Coupling and Hadronic tau Decays. Physical Review Letters, v. 117, n. 15, . (15/20689-9)
BOITO, DIOGO; MASJUAN, PERE; OLIANI, FABIO. Higher-order QCD corrections to hadronic tau decays from Pade approximants. Journal of High Energy Physics, n. 8, . (16/01341-4, 15/20689-9)

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