2021.epjc81.101.pdf (2.64 MB)
Multi-lepton signatures of vector-like leptons with flavor
journal contribution
posted on 2023-06-09, 22:59 authored by Stefan Bißmann, Gudrun Hiller, Clara Hormigos Feliu, Daniel LitimDaniel LitimWe investigate collider signatures of standard model extensions featuring vector-like leptons and a flavor- ful scalar sector. Such a framework arises naturally within asymptotically safe model building, which tames the UV behavior of the standard model towards the Planck scale and beyond. We focus on values of Yukawa couplings and masses which allow to explain the present data on the muon and electron anomalous magnetic moments. Using a CMS search based on 77.4 fb-1 at the vs = 13 TeV LHC we find that flavorful vector-like leptons are excluded for masses below around 300 GeV if they are singlets under SU (2)L , and around 800 GeV if they are doublets. Exploiting the flavor-violating-like decays of the scalars, we design novel null test observables based on opposite sign opposite flavor invariant masses. These multi-lepton distributions allow to signal new physics and to extract mass hierarchies in reach of near-future searches at the LHC and the HL-LHC.
Funding
South-Eastern Particle Theory Alliance Sussex - RHUL - UCL 2020-2023 - Sussex node; G2836; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/T00102X/1
History
Publication status
- Published
File Version
- Published version
Journal
European Physical Journal CISSN
1434-6044Publisher
SpringerExternal DOI
Volume
81Page range
1-21Article number
a101Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2021-02-05First Open Access (FOA) Date
2021-02-05First Compliant Deposit (FCD) Date
2021-02-05Usage metrics
Categories
No categories selectedLicence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC