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Search for a pseudoscalar boson decaying into a Z boson and the 125 GeV Higgs boson in â„“+â„“-bb final states
Journal article   Open access   Peer reviewed

Search for a pseudoscalar boson decaying into a Z boson and the 125 GeV Higgs boson in â„“+â„“-bb final states

Vardan Khachatryan, Cécile Caillol, Patrizia Barria, Barbara Clerbaux, Gilles Lentdecker, Hugo Delannoy, Didar Dobur, Giuseppe Fasanella, Laurent Favart, Arnaud Gay, …
Physics letters. B, Vol.748, pp.221-243
01/01/2015
DOI: 10.1016/j.physletb.2015.07.010
url
https://doi.org/10.1016/j.physletb.2015.07.010View
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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.
Condensed Matter High Energy Physics Experiment Phenomenology Physique des particules élémentaires Quantum Gases

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