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<sup>-1</sup>. Decays of CP-even h bosons to ττ 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 σ(gg→A)×BR(A→Zh)×BR(h→ff-) are 0.098-0.013 pb for f=τ and 0.57-0.014 pb for f=b in a range of m<inf>A</inf>=220-1000GeV. The results are combined and interpreted in the context of two-Higgs-doublet models.
|Titolo:||Search for a CP-odd Higgs boson decaying to Zh in pp collisions at s=8TeV with the ATLAS detector|
|Autori interni:||CONVENTI, Francesco Alessandro|
DI DONATO, CAMILLA
|Data di pubblicazione:||2015|
|Rivista:||PHYSICS LETTERS. SECTION B|
|Appare nelle tipologie:||1.1 Articolo in rivista|