UV physics from IR features: new prospects from top flavor violation
| Autor: | Altmannshofer, Wolfgang, Gori, Stefania, Lehmann, Benjamin V., Zuo, Jianhong |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Phys. Rev. D 107, 095025 (2023) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevD.107.095025 |
| Popis: | New physics in the rare top decays $t \to q \ell^+\ell^-$ is currently very weakly constrained. We show that in a large class of Standard Model extensions, existing experimental constraints on new physics in flavor-conserving processes imply strong indirect bounds on new physics contributions to flavor-violating processes of the form $t \to q \ell^+\ell^-$. These indirect bounds arise from basic principles of quantum field theory together with a few generic conditions on the UV structure of the theory, and are roughly an order of magnitude stronger than the present experimental bounds on the same processes. These constraints provide a theoretically motivated target for experimental searches for $t \to q \ell^+\ell^-$: violation of these bounds would exclude a large class of new physics models, and would provide nontrivial insight into the UV behavior of the new physics. Comment: 16 pages, 6 figures. Matched published version |
| Databáze: | arXiv |
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