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

• 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 decay
• Verf.angabe: Martin Bauer, Matthias Neubert, and Andrea Thamm
• Fussnoten: Gesehen am 10.01.2018
• Titel Quelle: Enthalten in: De.arxiv.org
• Jahr Quelle: 2016
• Band/Heft Quelle: (2016) Artikel-Nummer 1610.00009, 6 Seiten
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1567014569

Abstract

Scalar particles $S$ which 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 $S\to Zh$ 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.