| Article | |
| Report number | arXiv:2008.12204 |
| Title | Electroweak couplings of the Higgs boson at a multi-TeV muon collider |
| Related title | Electroweak Couplings of the Higgs Boson at a Multi-TeV Muon Collider |
| Author(s) | Han, Tao (Pittsburgh U.) ; Liu, Da (UC, Davis, QMAP) ; Low, Ian (Northwestern U. ; Argonne) ; Wang, Xing (UC, San Diego) |
| Publication | 2021 |
| Imprint | 2020-08-27 |
| Number of pages | 12 |
| In: | Phys. Rev. D 103 (2021) 013002 |
| DOI | 10.1103/PhysRevD.103.013002 (publication) |
| Subject category | hep-ph ; hep-ex ; Particle Physics - Phenomenology ; Particle Physics - Experiment ; Particle Physics - Phenomenology ; Particle Physics - Experiment |
| Study | IMCC |
| Abstract | We estimate the expected precision at a multi-TeV muon collider for measuring the Higgs boson couplings with electroweak gauge bosons, $HVV$ and $HHVV\ (V=W^\pm,Z)$, as well as the trilinear Higgs self-coupling $HHH$. At very high energies both single and double Higgs productions rely on the vector-boson fusion (VBF) topology. The outgoing remnant particles have a strong tendency to stay in the very forward region, leading to the configuration of the "inclusive process" and making it difficult to isolate $ZZ$ fusion events from the $WW$ fusion. In the single Higgs channel, we perform a maximum likelihood analysis on $HWW$ and $HZZ$ couplings using two categories: the inclusive Higgs production and the 1-muon exclusive signal. In the double Higgs channel, we consider the inclusive production and study the interplay of the trilinear $HHH$ and the quartic $VVHH$ couplings, by utilizing kinematic information in the invariant mass spectrum. We find that at a centre-of-mass energy of 10 TeV (30 TeV) with an integrated luminosity of 10 ab$^{-1}$ (90 ab$^{-1}$), one may reach a 95\% confidence level sensitivity of 0.073\% (0.023\%) for $WWH$ coupling, 0.61\% (0.21\%) for $ZZH$ coupling, 0.62\% (0.20\%) for $WWHH$ coupling, and 5.6\% (2.0\%) for $HHH$ coupling. For dim-6 operators contributing to the processes, these sensitivities could probe the new physics scale $\Lambda$ in the order of $1-10$ ($2-20$) TeV at a 10 TeV (30 TeV) muon collider. |
| Copyright/License | preprint: (License: arXiv nonexclusive-distrib 1.0) publication: © 2021-2024 authors (License: CC-BY-4.0) |
Corresponding record in: Inspire
ჩანაწერი შექმნილია 2024-03-09, ბოლოს შესწორებულია 2024-03-14
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