Search for low-mass Higgs bosons at CMS experiment at LHC

Two searches are performed for light Higgs bosons, one for production of the light pseudoscalar Higgs boson in association with a \bbbar~pair and decaying to a pair of $\tau$ leptons, and the other for the pair production of new light bosons, each decaying into a pair of muons. The results are based on pp collision data at a centre-of-mass energy of 8 TeV collected by the CMS experiment at the LHC and corresponding to an integrated luminosity up to 20.7~fb$^{-1}$. No excess of events is observed on top of the standard model background expectation and upper limits are set on the production cross section of the new boson times branching fraction to the lepton pairs.