Measurements of p p → Z Z production cross sections and constraints on anomalous triple gauge couplings at √s=13TeV
Abstract:
The production of Z boson pairs in proton–proton (p p) collisions, p p → (Z / γ∗) (Z / γ∗) → 2 ℓ2 ℓ′, where ℓ, ℓ′= e or μ , is studied at a center-of-mass energy of 13TeV with the CMS detector at the CERN LHC. The data sample corresponds to an integrated luminosity of 137fb-1, collected during 2016–2018. The Z Z production cross section, σtot(pp→ZZ)=17.4±0.3(stat)±0.5(syst)±0.4(theo)±0.3(lumi) pb, measured for events with two pairs of opposite-sign, same-flavor leptons produced in the mass region 60<mℓ+ℓ-<120GeV is consistent with standard model predictions. Differential cross sections are also measured and agree with theoretical predictions. The invariant mass distribution of the four-lepton system is used to set limits on anomalous Z Z Z and Z Z γ couplings.
Año de publicación:
2021
Keywords:
Fuente:

Tipo de documento:
Article
Estado:
Acceso abierto
Áreas de conocimiento:
- Física de partículas
Áreas temáticas de Dewey:
- Física moderna
- Química inorgánica
- Física

Objetivos de Desarrollo Sostenible:
- ODS 9: Industria, innovación e infraestructura
- ODS 17: Alianzas para lograr los objetivos
- ODS 8: Trabajo decente y crecimiento económico

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