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 TeV with the ATLAS detector
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 $$\sqrt{s}$$=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.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States); Univ. of Michigan, Ann Arbor, MI (United States); Harvard Univ., Cambridge, MA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- The ATLAS Collaboration
- Grant/Contract Number:
- AC02-76SF00515; SC0012704; SC0007859; SC0007881
- OSTI ID:
- 1460420
- Alternate ID(s):
- OSTI ID: 1475545; OSTI ID: 1499413; OSTI ID: 1499439; OSTI ID: 1499478; OSTI ID: 1639163; OSTI ID: 1769376
- Report Number(s):
- BNL-209229-2018-JACI; BNL-209254-2018-JACI; BNL-209298-2018-JACI; S0370269318305446; PII: S0370269318305446
- Journal Information:
- Physics Letters. B, Journal Name: Physics Letters. B Vol. 783 Journal Issue: C; ISSN 0370-2693
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- Netherlands
- Language:
- English
Web of Science
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