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Probing the Weinberg Operator at Colliders

Motivated by searches for 0νββ decay in nuclear experiments and collider probes of lepton number violation at dimension d≥7, we investigate the sensitivity to the d=5 Weinberg operator using the nonresonant signature pp→ℓ±ℓ′±jj at the LHC. We develop a prescription for the operator that is applicabl...

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Detalles Bibliográficos
Autores principales: Fuks, Benjamin, Neundorf, Jonas, Peters, Krisztian, Ruiz, Richard, Saimpert, Matthias
Lenguaje:eng
Publicado: 2020
Materias:
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.103.115014
http://cds.cern.ch/record/2748812
Descripción
Sumario:Motivated by searches for 0νββ decay in nuclear experiments and collider probes of lepton number violation at dimension d≥7, we investigate the sensitivity to the d=5 Weinberg operator using the nonresonant signature pp→ℓ±ℓ′±jj at the LHC. We develop a prescription for the operator that is applicable in collisions and decays, and focus on the ℓℓ′=μμ channel, which is beyond the reach of nuclear decays. For a Wilson coefficient C5μμ=1, scales as heavy as Λ∼8.3(11)  TeV can be probed with L=300  fb-1(3  ab-1). This translates to an effective μμ Majorana mass of |mμμ|∼7.3(5.4)  GeV and establishes a road map for testing the Weinberg operator at accelerators.