Higgs boson production in the $U(1{)}_{B-L}$ model at the ILC

Abstract

In the framework of the minimal $U(1{)}_{B-L}$ extension of the Standard Model, we investigate the Higgs boson production processes $e^{+}{e}^{-}\to ZH$, $e^{+}{e}^{-}\to {\nu }_e\overline{{\nu }_e}H$, $e^{+}{e}^{-}\to t\bar{t}H$, $e^{+}{e}^{-}\to ZHH$ and $e^{+}{e}^{-}\to {\nu }_e\overline{{\nu }_e}HH$ at the International Linear Collider (ILC). We present the production cross sections, the relative corrections and compare our results with the expected experimental accuracies for Higgs decay channel $H\to b\bar{b}$. In the allowed parameter space, we find that the effects of the three single Higgs boson production processes might approach the observable threshold of the ILC, and that the Higgs signal strengths ${\mu }_{b\bar{b}}$ of the two double Higgs boson production processes are all out of the observable threshold of the ILC so that the effects will be difficult to be observed at the ILC.

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