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    Nonperturbative structure of the quark-gluon vertex


    Skullerud, Jonivar and Bowman, Patrick O and Kizilersü, Ayse and Leinweber, Derek B and Williams, Anthony G (2003) Nonperturbative structure of the quark-gluon vertex. Journal of High Energy Physics, 2003 (04). 047-047. ISSN 1029-8479

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    Abstract

    The complete tensor structure of the quark–gluon vertex in Landau gauge is determined at two kinematical points (‘asymmetric’ and ‘symmetric’) from lattice QCD in the quenched approximation. The simulations are carried out at β = 6.0, using a mean-field improved Sheikholeslami–Wohlert fermion action, with two quark masses ∼ 60 and 115 MeV. We find substantial deviations from the abelian form at the asymmetric point. The mass dependence is found to be negligible. At the symmetric point, the form factor related to the chromomagnetic moment is determined and found to contribute significantly to the infrared interaction strength.

    Item Type: Article
    Keywords: QCD; nonperturbative effects; lattice QCD;
    Academic Unit: Faculty of Science and Engineering > Research Institutes > Hamilton Institute
    Faculty of Science and Engineering > Theoretical Physics
    Item ID: 15677
    Identification Number: https://doi.org/10.1088/1126-6708/2003/04/047
    Depositing User: Dr. Jonivar Skullerud
    Date Deposited: 15 Mar 2022 16:42
    Journal or Publication Title: Journal of High Energy Physics
    Publisher: springer
    Refereed: Yes
    URI:

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