Probing $HZ\gamma$ and $H\gamma \gamma$ Anomalous Couplings in the Process of $e^{+}{e}^{-}\to H\gamma$

Abstract

We propose to measure the $HZ\gamma$ and $H\gamma \gamma$ anomalous couplings in the process of $e^{+}{e}^{-}\to H\gamma$ with the sequential decay of $H\to b\bar{b}$. The discovery potential of observing the anomalous couplings are explored in details. Our study shows that the electron-positron collider has a great potential of testing the $HZ\gamma$ and $H\gamma \gamma$ couplings. Conservative bounds on the two anomalous couplings are also derived when no new physics signal were detected on top of the SM backgrounds.

Comments: 10 pages, 8 figures, submitted to Chinese Physics C