Search for a heavy Higgs boson decaying into a Z boson and another heavy Higgs boson in the ℓℓbb final state in pp collisions at √s= 13 TeV with the ATLAS detector
- Author(s): Aaboud, M;
- Aad, G;
- Abbott, B;
- Abdinov, O;
- Abeloos, B;
- Abidi, SH;
- AbouZeid, OS;
- Abraham, NL;
- Abramowicz, H;
- Abreu, H;
- Abulaiti, Y;
- Acharya, BS;
- Adachi, S;
- Adamczyk, L;
- Adelman, J;
- Adersberger, M;
- Adye, T;
- Affolder, AA;
- Afik, Y;
- Agheorghiesei, C;
- Aguilar-Saavedra, JA;
- Ahmadov, F;
- Aielli, G;
- Akatsuka, S;
- Åkesson, TPA;
- Akilli, E;
- Akimov, AV;
- Alberghi, GL;
- Albert, J;
- Albicocco, P;
- Alconada Verzini, MJ;
- Alderweireldt, S;
- Aleksa, M;
- Aleksandrov, IN;
- Alexa, C;
- Alexander, G;
- Alexopoulos, T;
- Alhroob, M;
- Ali, B;
- Aliev, M;
- Alimonti, G;
- Alison, J;
- Alkire, SP;
- Allaire, C;
- Allbrooke, BMM;
- Allen, BW;
- Allport, PP;
- Aloisio, A;
- Alonso, A;
- Alonso, F;
- Alpigiani, C;
- Alshehri, AA;
- Alstaty, MI;
- Alvarez Gonzalez, B;
- Álvarez Piqueras, D;
- Alviggi, MG;
- Amadio, BT;
- Amaral Coutinho, Y;
- Ambroz, L;
- Amelung, C;
- Amidei, D;
- Amor Dos Santos, SP;
- Amoroso, S;
- Amrouche, CS;
- Anastopoulos, C;
- Ancu, LS;
- Andari, N;
- Andeen, T;
- Anders, CF;
- Anders, JK;
- Anderson, KJ;
- Andreazza, A;
- Andrei, V;
- Angelidakis, S;
- Angelozzi, I;
- Angerami, A;
- Anisenkov, AV;
- Annovi, A;
- Antel, C;
- Anthony, MT;
- Antonelli, M;
- Antrim, DJA;
- Anulli, F;
- Aoki, M;
- Aperio Bella, L;
- Arabidze, G;
- Arai, Y;
- Araque, JP;
- Araujo Ferraz, V;
- Araujo Pereira, R;
- Arce, ATH;
- Ardell, RE;
- Arduh, FA;
- Arguin, JF;
- Argyropoulos, S;
- Armbruster, AJ;
- Armitage, LJ;
- Arnaez, O;
- Arnold, H;
- Arratia, M
- et al.
Published Web Location
http://doi.org/10.1016/j.physletb.2018.07.006Abstract
A search for a heavy neutral Higgs boson, A, decaying into a Z boson and another heavy Higgs boson, H, is performed using a data sample corresponding to an integrated luminosity of 36.1 fb−1 from proton–proton collisions at s=13 TeV recorded in 2015 and 2016 by the ATLAS detector at the Large Hadron Collider. The search considers the Z boson decaying to electrons or muons and the H boson into a pair of b-quarks. No evidence for the production of an A boson is found. Considering each production process separately, the 95% confidence-level upper limits on the pp→A→ZH production cross-section times the branching ratio H→bb are in the range of 14–830 fb for the gluon–gluon fusion process and 26–570 fb for the b-associated process for the mass ranges 130–700 GeV of the H boson and 230–800 GeV of the A boson. The results are interpreted in the context of two-Higgs-doublet models.
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