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Probing electroweak phase transition with multi-TeV muon colliders and gravitational waves

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arxiv 2101.10469 v3 pith:Q2WE26NL submitted 2021-01-25 hep-ph

Probing electroweak phase transition with multi-TeV muon colliders and gravitational waves

classification hep-ph
keywords muoncollidersparameterspacefoewptcolliderelectroweakgravitational
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We study the complementarity of the proposed multi-TeV muon colliders and the near-future gravitational wave (GW) detectors to the first order electroweak phase transition (FOEWPT), taking the real scalar extended Standard Model as the representative model. A detailed collider simulation shows the FOEWPT parameter space can be greatly probed via the the vector boson fusion production of the singlet, and its subsequent decay to the di-Higgs or di-boson channels. Especially, almost all the parameter space yielding detectable GW signals can be probed by the muon colliders. Therefore, if we could detect stochastic GWs in the future, a muon collider could provide a hopeful crosscheck to identify their origin. On the other hand, there is considerable parameter space that escapes GW detections but is within the reach of the muon colliders. The precision measurements of Higgs couplings could also probe the FOEWPT parameter space efficiently.

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Forward citations

Cited by 6 Pith papers

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