Multi-Higgs production in gluon fusion at 100 TeV
May 20, 2016
18 pages
Published in:
- Phys.Rev.D 94 (2016) 085031
- Published: Oct 28, 2016
e-Print:
- 1605.06372 [hep-ph]
Report number:
- IPPP-16-41,
- DCPT-16-82
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Abstract: (arXiv)
We carry out a detailed study of multi-Higgs production processes in the gluon fusion channel in the high energy regime relevant to Future Circular hadron colliders and in the high-Higgs-multiplicity limit (> 20). Our results are based on the computation of the leading polygons - the triangles, boxes, pentagons and hexagons - to the scattering processes, further combined with the subsequent branchings to reach high final state multiplicities. The factorial growth of the number of diagrams leads to an exponential enhancement of such large multiplicity cross-sections and, ultimately, in breaking of perturbativity. We find that the characteristic energy and multiplicity scales where these perturbative rates become highly enhanced and grow with increasing energy are within the 100 TeV regime with of the order of 130 Higgses (or more) in the final state. We also show that already for a 50 TeV hadron collider the perturbative cross-sections for 140 bosons are at picobarn level.Note:
- 20 pages, 6 figures; v2: new Appendix reviewing the generating functions method to compute tree-level amplitudes on multi-particle thresholds; minor corrections; matches the published version in PRD
- hadron hadron: scattering
- hadron hadron: colliding beams
- gluon gluon: fusion
- Higgs particle: multiple production
- Higgs particle: multiplicity
- Higgs particle: final state
- final state: multiplicity
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Figures(8)
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