| Speaker: | Valya Khoze (IPPP, Durham Univ) |
|---|---|
| Title: | Multiple Higgs production at very high energies (and meltdown of perturbation theory) |
| Date (JST): | Wed, Mar 29, 2017, 13:30 - 14:30 |
| Place: | Seminar Room A |
| Abstract: | We focus on multi-Higgs production processes in the high energy regime and in the high-Higgs- multiplicity limit (≥ 20). 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 can be at picobarn level. Implications and speculations resulting from the apparent breakdown of the weakly coupled perturbation theory are discussed. |
