The Chirality-Flow Formalism for Standard Model Calculations

Joakim Alnefjord, Andrew Lifson, Christian Reuschle, Malin Sjödahl

    Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

    Abstract

    Scattering amplitudes are often split up into their color (su(N) ) and kinematic components. Since the su(N) gauge part can be described using flows of color, one may anticipate that the su(2 ) ⊕ su(2 ) kinematic part can be described in terms of flows of chirality. In two recent papers we showed that this is indeed the case, introducing the chirality-flow formalism for standard model calculations. Using the chirality-flow method—which builds on and further simplifies the spinor-helicity formalism—Feynman diagrams can be directly written down in terms of Lorentz-invariant spinor inner products, allowing the simplest and most direct path from a Feynman diagram to a complex number. In this presentation, we introduce this method and show some examples.

    Original languageEnglish
    Title of host publicationInternational Workshop on Lie Theory and Its Applications in Physics
    EditorsVladimir Dobrev
    PublisherSpringer Gabler
    Pages387-394
    Number of pages8
    ISBN (Print)9789811947506
    DOIs
    Publication statusPublished - 2022
    Event14th International Workshop on Lie Theory and Its Applications in Physics, LT 2021 - Virtual, Online
    Duration: 2021 Jun 212021 Jun 25

    Publication series

    NameSpringer Proceedings in Mathematics and Statistics
    Volume396
    ISSN (Print)2194-1009
    ISSN (Electronic)2194-1017

    Conference

    Conference14th International Workshop on Lie Theory and Its Applications in Physics, LT 2021
    CityVirtual, Online
    Period2021/06/212021/06/25

    Subject classification (UKÄ)

    • Subatomic Physics

    Free keywords

    • Chirality flow
    • Feynman rules
    • Spinor-helicity formalism

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