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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...
Autores principales: | , , , , |
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Lenguaje: | eng |
Publicado: |
2020
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1103/PhysRevD.103.115014 http://cds.cern.ch/record/2748812 |
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. |
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