Analyzing the CP nature of a new scalar particle via S → Zh decays

• Verfasst von: Bauer, Martin [VerfasserIn]
• Verfasst von: Neubert, Matthias [VerfasserIn]
• Verfasst von: Thamm, Andrea [VerfasserIn]
• Titel: Analyzing the CP nature of a new scalar particle via S → Zh decays
• Verf.angabe: Martin Bauer, Matthias Neubert, and Andrea Thamm
• Fussnoten: Gesehen am 17.11.2017
• Titel Quelle: Enthalten in: Physical review letters
• Jahr Quelle: 2016
• Band/Heft Quelle: 117(2016,18) Artikel-Nummer 181801, 5 Seiten
• ISSN Quelle: 1079-7114
• DOI: doi:10.1103/PhysRevLett.117.181801
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1565481402

Abstract

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.