Heavy Particle Towers and Nonlocal QFT
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arXiv
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866917639303987200 |
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| author | Paganis, Stathes |
| author_facet | Paganis, Stathes |
| contents | A number of gravitation-motivated theories, as well as theories with new coloured fermions predict heavy particle towers with spectral densities $ρ(m^2)$ growing faster than $e^{m}$, 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 $p^2\simeqΛ_{NL}^2$, the scalar propagator and scattering amplitudes are modified by nonlocal factors of the form $e^{p^2/Λ^2_{NL}}$. The double-Higgs production measurement at the LHC is proposed as a highly sensitive probe of nonlocality at the electroweak scale. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_09159 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Heavy Particle Towers and Nonlocal QFT Paganis, Stathes High Energy Physics - Phenomenology A number of gravitation-motivated theories, as well as theories with new coloured fermions predict heavy particle towers with spectral densities $ρ(m^2)$ growing faster than $e^{m}$, 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 $p^2\simeqΛ_{NL}^2$, the scalar propagator and scattering amplitudes are modified by nonlocal factors of the form $e^{p^2/Λ^2_{NL}}$. The double-Higgs production measurement at the LHC is proposed as a highly sensitive probe of nonlocality at the electroweak scale. |
| title | Heavy Particle Towers and Nonlocal QFT |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2404.09159 |