Prospects of measuring the branching fraction of the Higgs boson decaying into muon pairs at the International Linear Collider

Abstract

The prospects for measuring the branching fraction of $H\to {\mu }^{+}{\mu }^{-}$ at the International Linear Collider (ILC) have been evaluated based on a full detector simulation of the International Large Detector (ILD) concept, considering centre-of-mass energies ($\sqrt{s}$) of 250 GeV and 500 GeV. For both $\sqrt{s}$ cases, the two final states $e^{+}{e}^{-}\to q\overline{q}H$ and $e^{+}{e}^{-}\to \nu \overline{\nu }H$ have been analyzed. For integrated luminosities of 2 ab${}^{-1}$ at $\sqrt{s}=250$ GeV and 4 ab${}^{-1}$ at $\sqrt{s}=500$ GeV, the combined precision on the branching fraction of $H\to {\mu }^{+}{\mu }^{-}$ is estimated to be 17{\%}. The impact of the transverse momentum resolution for this analysis is also studied.

21 pages, 10 figures, 11 tables. This work was carried out in the framework of the ILD concept group

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Cited by in corpus (3)

• Expected $H\to {\mu }^{+}{\mu }^{-}$ measurement precision with $e^{+}{e}^{-}\to Z(q\bar{q})H$ production at the CEPC
• Measurement of $\sigma (e^{+}{e}^{-}\to HZ)\times \mathcal{B}r(H\to Z{Z}^{\ast })$ at the 250 GeV ILC
• The $\gamma b\overline{b}$ production via ${\gamma }^{\ast }{\gamma }^{\ast }$ collisions at the ILC and LHC