2024/04/14 by Paganis, Stathes
Mathematics · #FOS: Physical sciences #Gas Dynamics and Kinetic Theory #High Energy Physics - Phenomenology (hep-ph)
paper · pdf · doi:10.48550/arxiv.2404.09159
openalex publication_date 2024/04/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A number of gravitation-motivated theories, as well as theories with new coloured fermions predict heavy particle towers with spectral densities ρ(m2) growing faster than em, a characteristic of nonlocalizable theories. It is shown that if a light scalar, like the Higgs boson, interacts strongly with a heavy scalar particle tower with exponentially rising degeneracy, then the local low-energy theory is equivalent to an effective nonlocal scalar QFT. For energies approaching the nonlocality scale p2≃ΛNL2, the scalar propagator and scattering amplitudes are modified by nonlocal factors of the form e^p2/Λ2NL. The double-Higgs production measurement at the LHC is proposed as a highly sensitive probe of nonlocality at the electroweak scale.