Top-quark Yukawa coupling with a dimension-6 operator

We extend the standard top-quark Yukawa coupling with a dimension-6 operator in order to accommodate a CP violating complex phase with manifest gauge invariance. This leads to a new ttHH contact interaction, along with many Goldstone boson couplings. We investigate the impact of the new interactions...

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Bibliographische Detailangaben
1. Verfasser: Zheng, Ya-Juan
Format: Tagungsbericht
Sprache:eng
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Zusammenfassung:We extend the standard top-quark Yukawa coupling with a dimension-6 operator in order to accommodate a CP violating complex phase with manifest gauge invariance. This leads to a new ttHH contact interaction, along with many Goldstone boson couplings. We investigate the impact of the new interactions on a muon collider process µ − µ + → ν µ ῡ µ tt¯H compared with the standard dimension-4 top-Yukawa coupling. The unitarity bounds on the coefficient of the new physics operator is obtained from W L − W + L and HH initiated processes.
ISSN:2100-014X
2101-6275
2100-014X
DOI:10.1051/epjconf/202431501027