Finger printing the presence of extra scalars in the h → Vff′ forward-backward asymmetry

• Published in: The journal of high energy physics Vol. 2021; no. 6; pp. 1 - 27
• Main Author: Ilisie, Victor
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.06.2021; Springer Nature B.V; SpringerOpen
• Subjects: Asymmetry; Beyond Standard Model; Classical and Quantum Gravitation; CP violation; Elementary Particles; Fingerprinting; Higgs Physics; High energy physics; Luminosity; Parameter modification; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Regular Article - Theoretical Physics; Relativity Theory; Scalars; String Theory; Beyond Standard Model; CP violation; Higgs Physics
• ISSN: 1029-8479; 1029-8479
• DOI: 10.1007/JHEP06(2021)109

A bstract In this work we analyse the forward-backward asymmetry of the h → V f f′ decay in the Aligned two-Higgs Doublet Model. The Standard Model prediction for this asymmetry for V = W is small, as it suffers from Yukawa suppression and is absent for V = Z . This does not necessarily have to hold true in the Aligned model where these contributions can in principle be re-enhanced through the independent alignment factors ς f . In this analysis we conclude that, due to the additional contributions corresponding to the Aligned two-Higgs Doublet Model together with extra sources of CP-violation for the V = Z channel, the Standard Model predictions can be significantly modified in a great region of the parameter space. These deviations, that could be potentially measured at the High Luminosity LHC or future Higgs factories, would be a clear signal of new physics, and would shed new light on the possible extensions of the Standard Model and new sources of CP-violation.