Higgs Production at µ+µ+ Colliders. Based on hep-ph/2408.01068 [1]
Motivated by recent advancements in antimuon cooling, we consider Higgs boson production at µ+µ+ colliders. The leading-order W+W− fusion process present at, e.g., µ+µ− colliders does not occur since both intial-state particles carry the same charge. Nevertheless, Higgs production is possible via a...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2024-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2024/25/epjconf_lcws2024_01011.pdf |
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| Summary: | Motivated by recent advancements in antimuon cooling, we consider Higgs boson production at µ+µ+ colliders. The leading-order W+W− fusion process present at, e.g., µ+µ− colliders does not occur since both intial-state particles carry the same charge. Nevertheless, Higgs production is possible via a higher-order process mediated by a photon or Z boson. We find that at high energies, the associated cross secction grows as (log s)3 with the center-of-mass energy √s, as opposed to the log s growth of the leading-order process at µ+µ− colliders. Thus, the higher-order cross section with polarized beams can become about half as large as the leading-order process at µ+µ− colliders at O(10) TeV energies, despite its naive suppression. When calculating the higher-order cross section, collinear photon emissions make direct computations using event generators difficult. We therefore treat these emissions by splitting the phase-space into the sum of a non-collinear region calculable using event generators, and a collinear region approximated by a parton distribution function for the photon. Furthermore, since the same process can occur at any high-energy lepton collider, this large cross section needs to be considered also for Higgs production at µ+µ− and e+e− colliders. |
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| ISSN: | 2100-014X |