Combination of searches for Higgs boson pairs in pp collisions at root s=13 TeV with the ATLAS detector
Volume
800
Publisher
DOI
10.1016/j.physletb.2019.135103
Journal
PHYSICS LETTERS B
ISSN
0370-2693
Metadata
Show full item recordAbstract
This letter presents a combination of searches for Higgs boson pair production using up to 36.1
of proton–proton collision data at a centre-of-mass energy
TeV recorded with the ATLAS detector at the LHC. The combination is performed using six analyses searching for Higgs boson pairs decaying into the
,
,
,
,
and
final states. Results are presented for non-resonant and resonant Higgs boson pair production modes. No statistically significant excess in data above the Standard Model predictions is found. The combined observed (expected) limit at 95% confidence level on the non-resonant Higgs boson pair production cross-section is 6.9 (10) times the predicted Standard Model cross-section. Limits are also set on the ratio (
) of the Higgs boson self-coupling to its Standard Model value. This ratio is constrained at 95% confidence level in observation (expectation) to
(
). In addition, limits are set on the production of narrow scalar resonances and spin-2 Kaluza–Klein Randall–Sundrum gravitons. Exclusion regions are also provided in the parameter space of the habemus Minimal Supersymmetric Standard Model and the Electroweak Singlet Model.
Authors
Aad, G; Abbott, B; Abbott, DC; Abud, AA; Abeling, K; Abhayasinghe, DK; Abidi, SH; AbouZeid, OS; Abraham, NL; Abramowicz, HCollections
- Particle Physics [971]
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