Search for a pseudoscalar boson decaying into a Z boson and the 125 GeV Higgs boson in ℓ+ℓ−bb‾ final states
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol.748, pp.221-243, 2015 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 748
- Publication Date: 2015
- Doi Number: 10.1016/j.physletb.2015.07.010
- Journal Name: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.221-243
- Keywords: 2HDM, BSM, CMS, Higgs, MSSM
- Yıldız Technical University Affiliated: Yes
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.