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A search for a very light Higgs boson decaying into a pair of tau leptons ispresented within the framework of the next-to-minimal supersymmetric standardmodel. This search is based on a data set corresponding to an integratedluminosity of 19.7 inverse femtobarns of proton-proton collisions collected bythe CMS experiment at a centre-of-mass energy of 8 TeV. The signal is definedby the production of either of the two lightest scalars, h[1] or h[2], viagluon-gluon fusion and subsequent decay into a pair of the lightest Higgsbosons, a[1] or h[1]. The h[1] or h[2] boson is identified with the observedstate at a mass of 125 GeV. The analysis searches for decays of the a[1] (h[1])states into pairs of tau leptons and covers a mass range for the a[1] (h[1])boson of 4 to 8 GeV. The search reveals no significant excess in data abovestandard model background expectations, and an upper limit is set on the signalproduction cross section times branching fraction as a function of the a[1](h[1]) boson mass. The 95% confidence level limit ranges from 4.5 pb at m(a[1])(m(h[1])) = 8 GeV to 10.3 pb at m(a[1]) (m(h[1])) = 5 GeV.

the journal of high energy physics/the journal of high energy physics

Search for a very light NMSSM Higgs boson produced in decays of the 125  GeV scalar boson and decaying into tau leptons in pp collisions at sqrt(s) =  8 TeV