Autor: |
Beltrán, Rebeca, Cottin, Giovanna, Helo, Juan Carlos, Hirsch, Martin, Titov, Arsenii, Wang, Zeren Simon |
Zdroj: |
Journal of High Energy Physics; Jan2023, Vol. 2023 Issue 1, p1-38, 38p |
Abstrakt: |
In the framework of the low-energy effective field theory of the Standard Model extended with heavy neutral leptons (HNLs), we calculate the production rates of HNLs from meson decays triggered by dimension-six operators. We consider both lepton-number-conserving and lepton-number-violating four-fermion operators involving either a pair of HNLs or a single HNL. Assuming that HNLs are long-lived, we perform simulations and investigate the reach of the proposed far detectors at the high-luminosity LHC to (i) active-heavy neutrino mixing and (ii) the Wilson coefficients associated with the effective operators, for HNL masses below the mass of the B-meson. We further convert the latter to the associated new-physics scales. Our results show that scales in excess of hundreds of TeV and the active-heavy mixing squared as small as 10−15 can be probed by these experiments. [ABSTRACT FROM AUTHOR] |
Databáze: |
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Externí odkaz: |
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