Lévy imaging of elastic scattering and proton hollowness at 13 TeV

T. Csörgo, R. Pasechnik, A. Ster

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    Sammanfattning

    The shape of elastic differential cross section within and beyond the diffractive cone at 13 TeV pp collision energy has been shown to be precisely described by the Lévy series expansion in whole available range of momentum transfers. This way, the crucial information about the real and imaginary parts of the elastic amplitude has been obtained resulting in precision reconstruction of the proton inelasticity profile. We have found that the profile function P(b) undergoes a qualitative change at √s ≈ 7 TeV collision energy. At small values of the impact parameter b a P(b) ≈ 1 plateaux develops, which becomes depressed at larger energies, such that a shallow minimum is formed near b = 0. We have evaluated the corresponding error bar and found such a hotly debated proton hollowness (or “black-ring”) effect with beyond 5σ significance.

    Originalspråkengelska
    Titel på värdpublikationEuropean Physical Society Conference on High Energy Physics (EPS-HEP2019)
    Volym364
    DOI
    StatusPublished - 2019
    Evenemang2019 European Physical Society Conference on High Energy Physics, EPS-HEP 2019 - Ghent, Belgien
    Varaktighet: 2019 juli 102019 juli 17

    Publikationsserier

    NamnProceedings of Science
    FörlagSissa Medialab srl
    ISSN (tryckt)1824-8039

    Konferens

    Konferens2019 European Physical Society Conference on High Energy Physics, EPS-HEP 2019
    Land/TerritoriumBelgien
    OrtGhent
    Period2019/07/102019/07/17

    Ämnesklassifikation (UKÄ)

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