Search for Higgs boson pair production in the WW(*)WW(*) decay channel using ATLAS data recorded at √s = 13 TeV

M Aaboud; Torsten Åkesson; Simona Bocchetta; Eric Corrigan; Caterina Doglioni; Kristian Gregersen; Eva Brottmann Hansen; Vincent Hedberg; Göran Jarlskog; Charles Kalderon; Edgar Kellermann; Balazs Konya; Else Lytken; Katja Mankinen; Ulf Mjörnmark; Ruth Pöttgen; Trine Poulsen; Oxana Smirnova; L Zwalinski; ATLAS Collaboration

doi:10.1007/JHEP05(2019)124

Search for Higgs boson pair production in the WW()WW() decay channel using ATLAS data recorded at √s = 13 TeV

M Aaboud, Torsten Åkesson, Simona Bocchetta, Eric Corrigan, Caterina Doglioni, Kristian Gregersen, Eva Brottmann Hansen, Vincent Hedberg, Göran Jarlskog, Charles Kalderon, Edgar Kellermann, Balazs Konya, Else Lytken, Katja Mankinen, Ulf Mjörnmark, Ruth Pöttgen, Trine Poulsen, Oxana Smirnova, L Zwalinski, ATLAS Collaboration

Research output: Contribution to journal › Article › peer-review

Abstract

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. © 2019, The Author(s).

Original language	English
Article number	124
Journal	Journal of High Energy Physics
Volume	2019
Issue number	5
DOIs	https://doi.org/10.1007/JHEP05(2019)124
Publication status	Published - 2019

Bibliographical note

Export Date: 18 June 2019

Subject classification (UKÄ)

Subatomic Physics

Free keywords

Hadron-Hadron scattering (experiments)

Access to Document

10.1007/JHEP05(2019)124

Cite this

Aaboud, M., Åkesson, T., Bocchetta, S., Corrigan, E., Doglioni, C., Gregersen, K., Brottmann Hansen, E., Hedberg, V., Jarlskog, G., Kalderon, C., Kellermann, E., Konya, B., Lytken, E., Mankinen, K., Mjörnmark, U., Pöttgen, R., Poulsen, T., Smirnova, O., Zwalinski, L., & ATLAS Collaboration (2019). Search for Higgs boson pair production in the WW(*)WW(*) decay channel using ATLAS data recorded at √s = 13 TeV. Journal of High Energy Physics, 2019(5), Article 124. https://doi.org/10.1007/JHEP05(2019)124

@article{64094b851e57443a93bbc07e4fe26891,

title = "Search for Higgs boson pair production in the WW(*)WW(*) decay channel using ATLAS data recorded at √s = 13 TeV",

abstract = "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. {\textcopyright} 2019, The Author(s).",

keywords = "Hadron-Hadron scattering (experiments)",

author = "M Aaboud and Torsten {\AA}kesson and Simona Bocchetta and Eric Corrigan and Caterina Doglioni and Kristian Gregersen and {Brottmann Hansen}, Eva and Vincent Hedberg and G{\"o}ran Jarlskog and Charles Kalderon and Edgar Kellermann and Balazs Konya and Else Lytken and Katja Mankinen and Ulf Mj{\"o}rnmark and Ruth P{\"o}ttgen and Trine Poulsen and Oxana Smirnova and L Zwalinski and {ATLAS Collaboration}",

note = "Export Date: 18 June 2019",

year = "2019",

doi = "10.1007/JHEP05(2019)124",

language = "English",

volume = "2019",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

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Aaboud, M, Åkesson, T, Bocchetta, S, Corrigan, E, Doglioni, C, Gregersen, K, Brottmann Hansen, E, Hedberg, V , Jarlskog, G, Kalderon, C, Kellermann, E, Konya, B , Lytken, E, Mankinen, K, Mjörnmark, U, Pöttgen, R, Poulsen, T, Smirnova, O, Zwalinski, L & ATLAS Collaboration 2019, 'Search for Higgs boson pair production in the WW(*)WW(*) decay channel using ATLAS data recorded at √s = 13 TeV', Journal of High Energy Physics, vol. 2019, no. 5, 124. https://doi.org/10.1007/JHEP05(2019)124

TY - JOUR

T1 - Search for Higgs boson pair production in the WW(*)WW(*) decay channel using ATLAS data recorded at √s = 13 TeV

AU - Aaboud, M

AU - Åkesson, Torsten

AU - Bocchetta, Simona

AU - Corrigan, Eric

AU - Doglioni, Caterina

AU - Gregersen, Kristian

AU - Brottmann Hansen, Eva

AU - Hedberg, Vincent

AU - Jarlskog, Göran

AU - Kalderon, Charles

AU - Kellermann, Edgar

AU - Konya, Balazs

AU - Lytken, Else

AU - Mankinen, Katja

AU - Mjörnmark, Ulf

AU - Pöttgen, Ruth

AU - Poulsen, Trine

AU - Smirnova, Oxana

AU - Zwalinski, L

AU - ATLAS Collaboration

N1 - Export Date: 18 June 2019

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. © 2019, The Author(s).

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. © 2019, The Author(s).

KW - Hadron-Hadron scattering (experiments)

U2 - 10.1007/JHEP05(2019)124

DO - 10.1007/JHEP05(2019)124

M3 - Article

SN - 1029-8479

VL - 2019

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 5

M1 - 124

ER -