Search for a pseudoscalar boson decaying into a Z boson and the 125 GeV Higgs boson in ℓ < sup > + < /sup > ℓ < sup > − < /sup > bb‾ final states
Search for a pseudoscalar boson decaying into a Z boson and the 125 GeV Higgs boson in ℓ < sup > + < /sup > ℓ < sup > − < /sup > bb‾ final states
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Date
2015-09-02
Authors
Khachatryan, V.
Sirunyan, A. M.
Tumasyan, A.
Adam, W.
Asilar, E.
Bergauer, T.
Brandstetter, J.
Brondolin, E.
Dragicevic, M.
Erö, J.
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Abstract
Results are reported on a search for decays of a pseudoscalar A boson into a Z boson and a light scalar h boson, where the Z boson decays into a pair of oppositely-charged electrons or muons, and the h boson decays into bb‾. The search is based on data from proton–proton collisions at a center-of-mass energy s=8 TeV collected with the CMS detector, corresponding to an integrated luminosity of 19.7 fb−1. The h boson is assumed to be the standard model-like Higgs boson with a mass of 125 GeV. With no evidence for signal, upper limits are obtained on the product of the production cross section and the branching fraction of the A boson in the Zh channel. Results are also interpreted in the context of two Higgs doublet models.
Description
Keywords
2HDM,
BSM,
CMS,
Higgs,
MSSM
Citation
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. v.748