Search for nonresonant triple Higgs boson production in the final state with six bottom quarks in proton-proton collisions at √s = 13 TeV
Abstract
A search for nonresonant triple Higgs boson (HHH) production in the final state with six bottom quarks is performed using proton-proton collisions at √s = 13 TeV corresponding to an integrated luminosity of 138 fb−1 recorded by the CMS experiment. No significant excess of events over the background prediction is seen. Observed (expected) 95% confidence level upper limits on the signal cross section are set at 44 (43) fb, corresponding to 588 (572) times the standard model expectation. The observed (expected) constraint on the trilinear coupling modifier κ3 is −7.4 lt κ3 lt 12.4 (−6.4 lt κ_3 lt 11.2), assuming the quartic coupling modifier κ4 = 1. The corresponding constraint on κ4 is −177 lt κ4 lt 185 (−180 lt κ4 lt 190), assuming κ3 = 1. This analysis provides the most stringent constraint to date on nonresonant HHH production and excludes, for the first time, part of the (κ3,κ4) space allowed by the perturbative unitarity bound.
Related
- Search for the nonresonant production of a pair of additional Higgs bosons in the type-X two-Higgs-doublet model in proton-proton collisions at √s = 13 TeV
- Search for nonresonant production of strongly coupled dark matter in proton-proton collisions at √s = 13 TeV
- Search for resonant and nonresonant production of pairs of dijet resonances with b jets in the final state in proton-proton collisions at √s = 13 TeV
- Combination of searches for nonresonant Higgs boson pair production in proton–proton collisions at s = 13 TeV
- Search for charged Higgs bosons decaying into top and bottom quarks in lepton+jets final states in proton-proton collisions at √s=13 TeV
BibTeX
@misc{collaboration2026search,
title = {{Search for nonresonant triple Higgs boson production in the final state with six bottom quarks in proton-proton collisions at $\sqrts$ = 13 TeV}},
author = {CMS Collaboration},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2607.05145},
eprint = {2607.05145},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2607.05145},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Search for nonresonant triple Higgs boson production in the final state with six bottom quarks in proton-proton collisions at √s = 13 TeV
AU - CMS Collaboration
PY - 2026
DA - 2026/09/21
PB - arXiv
DO - 10.48550/arxiv.2607.05145
UR - https://arxiv.org/abs/2607.05145
AB - A search for nonresonant triple Higgs boson (HHH) production in the final state with six bottom quarks is performed using proton-proton collisions at √s = 13 TeV corresponding to an integrated luminosity of 138 fb^−1 recorded by the CMS experiment. No significant excess of events over the background prediction is seen. Observed (expected) 95% confidence level upper limits on the signal cross section are set at 44 (43) fb, corresponding to 588 (572) times the standard model expectation. The observed (expected) constraint on the trilinear coupling modifier κ_3 is −7.4 lt κ_3 lt 12.4 (−6.4 lt κ_3 lt 11.2), assuming the quartic coupling modifier κ_4 = 1. The corresponding constraint on κ_4 is −177 lt κ_4 lt 185 (−180 lt κ_4 lt 190), assuming κ_3 = 1. This analysis provides the most stringent constraint to date on nonresonant HHH production and excludes, for the first time, part of the (κ_3,κ_4) space allowed by the perturbative unitarity bound.
ER -