Probing light top partners with CP violation
| Autor: | Thibaud Vantalon, Giuliano Panico, Marc Riembau |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Quark
Nuclear and High Energy Physics Particle physics FOS: Physical sciences Electron 01 natural sciences High Energy Physics - Phenomenology (hep-ph) 0103 physical sciences ddc:530 lcsh:Nuclear and particle physics. Atomic energy. Radioactivity Beyond Standard Model CP violation Effective Field Theories Technicolor and Composite Models 010306 general physics Physics Large Hadron Collider 010308 nuclear & particles physics High Energy Physics::Phenomenology Effective Field Theories Technicolor and Composite Models High Energy Physics - Phenomenology Dipole CP violation Moment (physics) Beyond Standard Model Higgs boson lcsh:QC770-798 High Energy Physics::Experiment Lepton |
| Zdroj: | Journal of High Energy Physics, Vol 2018, Iss 6, Pp 1-36 (2018) Journal of High Energy Physics Journal of high energy physics 1806(06), 056 (2018). doi:10.1007/JHEP06(2018)056 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP06(2018)056 |
| Popis: | We investigate CP-violating effects induced by light top partners in composite Higgs theories. We find that sizable contributions to the dipole moments of the light SM quarks and leptons are generically generated at the two-loop level through Barr-Zee-type diagrams. The present constraints on the electron and neutron electric dipole moments translate into bounds on top partner masses of order few TeV and are competitive with the reach of LHC direct searches. Interestingly, we find that CP-violation effects are sensitive to the same operators that control top partner single production. Near-future improvements in the determination of the electron dipole moment will extend the reach on top partner masses beyond the 5 - 10 TeV range. 31 pages, 10 figures; v2: typos corrected, matches published version |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink