Flavor-changing decay h → τ μ at super hadron colliders
Abstract
We study the flavor-changing decay h → τ μ with τ = τ- +τ+ and μ = μ- +μ+ of a Higgs boson at future hadron colliders, namely: a) High Luminosity Large Hadron Collider, b) High Energy Large Hadron Collider and c) Future hadron-hadron Circular Collider. The theoretical framework adopted is the Two-Higgs-Doublet Model type III. The free model parameters involved in the calculation are constrained through Higgs boson data, Lepton Flavor Violating processes and the muon anomalous magnetic dipole moment; later they are used to analyze the branching ratio of the decay h → τ μ and to evaluate the gg → h production cross section. We find that at the Large Hadron Collider is not possible to claim for evidence of the decay h → τ μ achieving a signal significance about of 1.46σ by considering its final integrated luminosity, 300 fb-1. More promising results arise at the High Luminosity Large Hadron Collider in which a prediction of 4.6σ when an integrated luminosity of 3 ab-1 and tan β = 8 are achieved. Meanwhile, at the High Energy Large Hadron Collider (Future hadron-hadron Circular Collider) a potential discovery could be claimed with a signal significance around 5.04σ (5.43σ) for an integrated luminosity of 3 ab-1 and tan β = 8 (5 ab-1 and tan β = 4).
- Publication:
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Journal of High Energy Physics
- Pub Date:
- August 2020
- DOI:
- 10.1007/JHEP08(2020)170
- arXiv:
- arXiv:2002.04120
- Bibcode:
- 2020JHEP...08..170A
- Keywords:
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- Beyond Standard Model;
- Higgs Physics;
- High Energy Physics - Phenomenology
- E-Print:
- Accepted version to be published in JHEP, typos corrected, added citations