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Search for a CP-odd Higgs boson decaying to Zh in pp collisions at root s=8 TeV with the ATLAS detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
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Number of Authors: 2827
2015 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 744, 163-183 p.Article in journal (Refereed) Published
Abstract [en]

A search for a heavy, CP-odd Higgs boson, A, decaying into a Z boson and a 125 GeV Higgs boson, h, with the ATLAS detector at the LHC is presented. The search uses proton-proton collision data at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 20.3 fb(-1). Decays of CP-even h bosons to tau tau or bb pairs with the Z boson decaying to electron or muon pairs are considered, as well as h -> bb decays with the Z boson decaying to neutrinos. No evidence for the production of an A boson in these channels is found and the 95% confidence level upper limits derived for sigma(gg -> A) x BR(A -> Zh) x BR(h -> f (f) over bar) are 0.098-0.013 pb for f = tau and 0.57-0.014 pb for f = b in a range of m(A) = 220-1000 GeV. The results are combined and interpreted in the context of two-Higgs-doublet models.

Place, publisher, year, edition, pages
2015. Vol. 744, 163-183 p.
Keyword [en]
BSM Higgs boson, ATLAS
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-168985DOI: 10.1016/j.physletb.2015.03.054ISI: 000353892000030Scopus ID: 2-s2.0-84927701141OAI: oai:DiVA.org:kth-168985DiVA: diva2:819084
Funder
Swedish Research Council
Note

QC 20150610

Available from: 2015-06-10 Created: 2015-06-10 Last updated: 2017-12-04Bibliographically approved

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