Analyzing the CP nature of a new scalar particle via S → Zh decays
Scalar particles S that are singlets under the standard model gauge group are generic features of many models of fundamental physics, in particular, as possible mediators to a hidden sector. We show that the decay S→Zh provides a powerful probe of the CP nature of the scalar, because it is allowed o...
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| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
28 October 2016
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| In: |
Physical review letters
Year: 2016, Jahrgang: 117, Heft: 18, Pages: 181801 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.117.181801 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevLett.117.181801 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.117.181801 
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| Verfasserangaben: | Martin Bauer, Matthias Neubert, and Andrea Thamm |
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| 520 | |a Scalar particles S that are singlets under the standard model gauge group are generic features of many models of fundamental physics, in particular, as possible mediators to a hidden sector. We show that the decay S→Zh provides a powerful probe of the CP nature of the scalar, because it is allowed only if S has CP-odd interactions. We perform a model-independent analysis of this decay using an effective Lagrangian and compute the relevant Wilson coefficients arising from integrating out heavy fermions to one-loop order. | ||
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