TY - JOUR
T1 - Combination of searches for Higgs boson pairs in pp collisions at with the ATLAS detector
AU - Bethani, Agni
AU - Cox, Brian
AU - Da Via, Cinzia
AU - Dann, Nicholas
AU - Forti, Alessandra
AU - Loebinger, Frederick
AU - Masik, Jiri
AU - Menary, Stephen
AU - Munoz Sanchez, Francisca
AU - Oh, Alexander
AU - Pater, Joleen
AU - Peters, Yvonne
AU - Pilkington, Andrew
AU - Price, Darren
AU - Qin, Yang
AU - Shaw, Savanna
AU - Watts, Stephen
AU - Wyatt, Terence
AU - The ATLAS Collaboration,
PY - 2019
Y1 - 2019
N2 - 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.
AB - 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.
U2 - 10.1016/j.physletb.2019.135103
DO - 10.1016/j.physletb.2019.135103
M3 - Article
SN - 0370-2693
JO - Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
ER -