| Autor: |
Jung Chang, Kingman Cheung, Jae Sik Lee, Chih-Ting Lu, Jubin Park |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
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| Zdroj: |
Journal of High Energy Physics, Vol 2017, Iss 12, Pp 1-18 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
1029-8479 |
| DOI: |
10.1007/JHEP12(2017)053 |
| Popis: |
Abstract In many extensions of the standard model, there exist a few extra Higgs bosons. Suppose a heavy neutral Higgs boson H is discovered at the LHC, one could then investigate CP and CPT˜ $$ \mathrm{C}\mathrm{P}\tilde{\mathrm{T}} $$ properties of its couplings to a pair of Z bosons through H → ZZ → 4ℓ. We use the helicity-amplitude method to write down the most general form for the angular distributions of the four final-state leptons, which can cover the case of CP-even, -odd, and -mixed state for the Higgs boson. We figure out there are 9 types of angular observables and all the H couplings to Z bosons can be fully determined by exploiting them. A Higgs-boson mass of 260 GeV below the tt threshold is illustrated with full details. With a total of 103 events of H → ZZ → 4ℓ, one can determine the couplings up to 12-20% uncertainties. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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