Search for Third-Generation Vectorlike Leptons in $pp$ Collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
| Autor: | ATLAS Collaboration |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Exotics
p p: scattering data analysis method 13000 GeV-cms lepton: coupling vector particle [lepton] mass [lepton] doublet scattering [p p] proton-proton tau: hadronic decay lepton: mass upper limit [mass] background family: 3 lepton: model lepton: vector particle ATLAS mass: upper limit lepton: multiple production Vectorlike leptons machine learning CERN LHC Coll coupling [lepton] model [lepton] colliding beams [p p] hadronic decay [tau] 3 [family] multiple production [lepton] Run 2 p p: colliding beams experimental results |
| DOI: | 10.3204/pubdb-2022-07351 |
| Popis: | 42 pp. (2022). A search for vectorlike leptons coupling to the third generation Standard Model leptons in the multilepton (two, three, and four or more light leptons) final state with zero or more hadronic tau lepton decays is presented. The search was performed using a dataset of proton-proton collisions corresponding to an integrated luminosity of 139 fb$^{-1}$ at a center-of-mass energy of 13 TeV recorded by the ATLAS detector at the LHC. To maximize the separation of signal from background events, a machine learning classifier was used. No excess of events was observed beyond the standard model expectation. Using a doublet vectorlike lepton model, vectorlike leptons coupling to third generation Standard Model leptons are excluded in the mass range 130 GeV to 900 GeV at the 95% confidence level, with an expected upper mass limit of 970 GeV. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|