TY - JOUR
T1 - Search for Higgs boson pair production in the WW(*)WW(*) decay channel using ATLAS data recorded at s√ = 13 TeV
AU - Bethani, Agni
AU - Bitadze, Alexander
AU - Crane, Jonathan
AU - Da Via, Cinzia
AU - Dann, Nicholas
AU - Dysch, Sam
AU - Forti, Alessandra
AU - Hanson, Emily
AU - Howarth, James
AU - Lack, David
AU - Lopez Paz, Ivan
AU - Masik, Jiri
AU - Menary, Stephen
AU - Munoz Sanchez, Francisca
AU - Oh, Alexander
AU - Pater, Joleen
AU - Peters, Yvonne
AU - Pickles, Rebecca
AU - Pilkington, Andrew
AU - Price, Darren
AU - Qin, Yang
AU - Rawling, Jacob
AU - Scharmberg, Nicolas
AU - Shaw, Savanna
AU - Wyatt, Terence
PY - 2019
Y1 - 2019
N2 - A search for a pair of neutral, scalar bosons with each decaying into two W bosons is presented using 36.1 fb−1 of proton-proton collision data at a centre-of-mass energy of 13 TeV recorded with the ATLAS detector at the Large Hadron Collider. This search uses three production models: non-resonant and resonant Higgs boson pair production and resonant production of a pair of heavy scalar particles. Three final states, classified by the number of leptons, are analysed: two same-sign leptons, three leptons, and four leptons. No significant excess over the expected Standard Model backgrounds is observed. An observed (expected) 95% confidence-level upper limit of 160 (120) times the Standard Model prediction of non-resonant Higgs boson pair production cross-section is set from a combined analysis of the three final states. Upper limits are set on the production cross-section times branching ratio of a heavy scalar X decaying into a Higgs boson pair in the mass range of 260 GeV ≤ mX ≤ 500 GeV and the observed (expected) limits range from 9.3 (10) pb to 2.8 (2.6) pb. Upper limits are set on the production cross-section times branching ratio of a heavy scalar X decaying into a pair of heavy scalars S for mass ranges of 280 GeV ≤ mX ≤ 340 GeV and 135 GeV ≤ mS ≤ 165 GeV and the observed (expected) limits range from 2.5 (2.5) pb to 0.16 (0.17) pb.
AB - A search for a pair of neutral, scalar bosons with each decaying into two W bosons is presented using 36.1 fb−1 of proton-proton collision data at a centre-of-mass energy of 13 TeV recorded with the ATLAS detector at the Large Hadron Collider. This search uses three production models: non-resonant and resonant Higgs boson pair production and resonant production of a pair of heavy scalar particles. Three final states, classified by the number of leptons, are analysed: two same-sign leptons, three leptons, and four leptons. No significant excess over the expected Standard Model backgrounds is observed. An observed (expected) 95% confidence-level upper limit of 160 (120) times the Standard Model prediction of non-resonant Higgs boson pair production cross-section is set from a combined analysis of the three final states. Upper limits are set on the production cross-section times branching ratio of a heavy scalar X decaying into a Higgs boson pair in the mass range of 260 GeV ≤ mX ≤ 500 GeV and the observed (expected) limits range from 9.3 (10) pb to 2.8 (2.6) pb. Upper limits are set on the production cross-section times branching ratio of a heavy scalar X decaying into a pair of heavy scalars S for mass ranges of 280 GeV ≤ mX ≤ 340 GeV and 135 GeV ≤ mS ≤ 165 GeV and the observed (expected) limits range from 2.5 (2.5) pb to 0.16 (0.17) pb.
UR - https://www.scopus.com/pages/publications/85066787800
U2 - 10.1007/JHEP05(2019)124
DO - 10.1007/JHEP05(2019)124
M3 - Article
SN - 1126-6708
JO - The Journal of High Energy Physics
JF - The Journal of High Energy Physics
ER -