ATLAS, Collaboration; Agustoni, Marco; Ancu, Lucian; Beck, Hans Peter; Borer, Claudia; Cervelli, Alberto; Ereditato, Antonio; Gallo, Valentina; Haug, Sigve; Kruker, Tobias; Marti, Lukas; Schneider, Basil; Sciacca, Gianfranco; Stucci, Stefania Antonia; Weber, Michael (2014). Search for a multi-Higgs-boson cascade in W(+)W(-)b(b)over-bar events with the ATLAS detector in pp collisions at root s=8 TeV. Physical review. D - particles, fields, gravitation, and cosmology, 89(3), 032002. Melville, N.Y.: American Physical Society 10.1103/PhysRevD.89.032002
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A search is presented for new particles in an extension to the Standard Model that includes a heavy Higgs boson (H-0), an intermediate charged Higgs-boson pair (H-+/-), and a light Higgs boson (h(0)). The analysis searches for events involving the production of a single heavy neutral Higgs boson which decays to the charged Higgs boson and a W boson, where the charged Higgs boson subsequently decays into a W boson and the lightest neutral Higgs boson decaying to a bottom-antibottom-quark pair. Such a cascade results in a W-boson pair and a bottom-antibottom-quark pair in the final state. Events with exactly one lepton, missing transverse momentum, and at least four jets are selected from a data sample corresponding to an integrated luminosity of 20.3 fb(-1), collected by the ATLAS detector in proton-proton collisions at root s = 8 TeV at the LHC. The data are found to be consistent with Standard Model predictions, and 95% confidence-level upper limits are set on the product of cross section and branching ratio. These limits range from 0.065 to 43 pb as a function of H-0 and H-+/- masses, with m(h)o fixed at 125 GeV.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) 08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP) |
UniBE Contributor: |
Agustoni, Marco, Ancu, Lucian, Beck, Hans Peter, Borer, Claudia, Cervelli, Alberto, Ereditato, Antonio, Gallo, Valentina, Haug, Sigve, Kruker, Tobias, Marti, Lukas, Schneider, Basil, Sciacca, Gianfranco, Stucci, Stefania, Weber, Michele |
Subjects: |
500 Science > 530 Physics |
ISSN: |
1550-7998 |
Publisher: |
American Physical Society |
Language: |
English |
Submitter: |
Andrea Stettler |
Date Deposited: |
03 Oct 2014 15:11 |
Last Modified: |
02 Mar 2023 23:25 |
Publisher DOI: |
10.1103/PhysRevD.89.032002 |
Web of Science ID: |
000332161700001 |
ArXiv ID: |
1312.1956v1 |
Additional Information: |
Kollaboration - Es sind nur die Berner Autoren namentlich erwähnt. |
BORIS DOI: |
10.7892/boris.59045 |
URI: |
https://boris.unibe.ch/id/eprint/59045 |
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