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Combination of searches for Higgs boson pairs in pp collisions at s=13TeV with the ATLAS detector
Physics letters. B, 2020-01, Vol.800, Article 135103
[Peer Reviewed Journal]
2019 The Author(s) ;ISSN: 0370-2693 ;EISSN: 1873-2445 ;DOI: 10.1016/j.physletb.2019.135103
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Title:
Combination of searches for Higgs boson pairs in pp collisions at s=13TeV with the ATLAS detector
Author:
Adamek, L.
;
Alexa, C.
;
Anders, C.F.
;
Araujo Ferraz, V.
;
Bandyopadhyay, A.
;
Beauchemin, P.H.
;
Beck, H.C.
;
Bednyakov, V.A.
;
Bensinger, J.R.
;
Bentvelsen, S.
;
Biebel, O.
;
Biesuz, N.V.
;
Borissov, G.
;
Bressler, S.
;
Buckley, A.G.
;
Bührer, F.
;
Bulekov, O.
;
Calvet, T.P.
;
Calvetti, M.
;
Caron, S.
;
Carquin, E.
;
Cerrito, L.
;
Cervelli, A.
;
Chiu, Y.H.
;
Clement, C.
;
Corpe, L.D.
;
Cristinziani, M.
;
Czodrowski, P.
;
Delporte, C.
;
Delsart, P.A.
;
Dias, F.A.
;
Duckeck, G.
;
Düren, M.
;
Estrada Pastor, O.
;
Gabrielli, A.
;
Geisler, M.P.
;
Gignac, M.
;
Goldfarb, S.
;
Grout, Z.J.
;
Haas, A.
;
Hamity, G.N.
;
Hard, A.S.
;
Hasegawa, Y.
;
Haug, S.
;
Hawkes, C.M.
;
Higashida, A.
;
Idrissi, Z.
;
Izzo, V.
;
Jiang, Z.
;
Kawagoe, K.
;
Kiehn, M.
;
Kirk, J.
;
Knue, A.
;
Lanza, A.
;
Lehmann, K.
;
Lehmann Miotto, G.
;
Lionti, A.L.
;
Lipeles, E.
;
Lobodzinska, E.M.
;
Mandić, I.
;
Mdhluli, J.E.
;
Meyer, J.
;
Minashvili, I.A.
;
Mittal, M.
;
Mizukami, A.
;
Morley, A.K.
;
Murray, W.J.
;
Myska, M.
;
Newman, P.R.
;
O'Connor, K.
;
Okazaki, Y.
;
Petukhova, K.
;
Piacquadio, G.
;
Potrap, I.N.
;
Prokofiev, K.
;
Ravinovich, I.
;
Read, A.L.
;
Rembser, C.
;
Ricci, E.
;
Robinson, J.E.M.
;
Robson, A.
;
Sandaker, H.
;
Sauvan, E.
;
Sawyer, C.
;
Schioppa, M.
;
Scutti, F.
;
Sharma, A.
;
Shimojima, M.
;
Shrestha, S.
;
Soldevila, U.
;
Swift, S.P.
;
Thiele, F.
;
Tikhonov, Yu.A.
;
Vandelli, W.
;
Venturi, N.
;
Verducci, M.
;
Willis, C.
;
Wolff, R.
;
Xu, L.
;
Yuen, S.P.Y.
Subjects:
Fysik
;
Natural Sciences
;
Naturvetenskap
;
Physical Sciences
Is Part Of:
Physics letters. B, 2020-01, Vol.800, Article 135103
Description:
This letter presents a combination of searches for Higgs boson pair production using up to 36.1fb−1 of proton–proton collision data at a centre-of-mass energy s=13 TeV recorded with the ATLAS detector at the LHC. The combination is performed using six analyses searching for Higgs boson pairs decaying into the bb¯bb¯, bb¯W+W−, bb¯τ+τ−, W+W−W+W−, bb¯γγ and W+W−γγ 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 (κλ) of the Higgs boson self-coupling to its Standard Model value. This ratio is constrained at 95% confidence level in observation (expectation) to −5.0<κλ<12.0 (−5.8<κλ<12.0). 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.
Publisher:
Elsevier B.V
Language:
English
Identifier:
ISSN: 0370-2693
EISSN: 1873-2445
DOI: 10.1016/j.physletb.2019.135103
Source:
SWEPUB Freely available online
DOAJ Directory of Open Access Journals
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