| Title: |
Long-lived heavy neutral leptons from mesons in effective field theory |
| Authors: |
Beltrán R; Cottin G; Helo JC; Hirsch M; Titov A; Wang ZS |
| Contributors: |
Beltrán, R; Cottin, G; Helo, Jc; Hirsch, M; Titov, A; Wang, Zs |
| Publication Year: |
2023 |
| Collection: |
Padua Research Archive (IRIS - Università degli Studi di Padova) |
| Description: |
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. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
info:eu-repo/semantics/altIdentifier/wos/WOS:000909520000005; issue:1; numberofpages:38; journal:JOURNAL OF HIGH ENERGY PHYSICS; https://hdl.handle.net/11577/3548564 |
| DOI: |
10.1007/JHEP01(2023)015 |
| Availability: |
https://hdl.handle.net/11577/3548564; https://doi.org/10.1007/JHEP01(2023)015 |
| Rights: |
info:eu-repo/semantics/openAccess ; license:Creative commons ; license uri:http://creativecommons.org/licenses/by/4.0/ |
| Accession Number: |
edsbas.34160757 |
| Database: |
BASE |