Combination results of the recently discovered boson are presented using data
samples corresponding to integrated luminosities of up to 5.1 \invfb at 7 TeV
and up to 12.2 \invfb at 8 TeV of proton-proton collisions collected with CMS
experiment at LHC. The significance of the new boson is 6.9 Ο with mass
measured to be 125.8 Β± 0.4 (stat) Β± 0.4 (syst). The event yields
obtained by the different analyses targeting specific decay modes and
production mechanisms are consistent with those predicted for the stand model
(SM) Higgs boson. The best-fit signal strength for all channels combined,
expressed in units of the SM Higgs boson cross section, is 0.88 Β± 0.21 at
the measured mass. The consistency of the couplins of the observed boson with
those expected for the SM Higgs boson is tested in various ways, and no
significant deviations are found. Results on the test of different spin-parity
hypotheses of the observed boson are also shown, but with updated data samples
corresponding to integrated luminosities of 5.1 \invfb at 7 TeV and 19.6
\invfb at 8 TeV in two channels H β WW βΒ 2β2Ξ½
and H β ZZ βΒ 4β separately. Under the assumption
that the observed boson has spin 0 and positive parity, the pure scalar
hypothesis is found to be consistent with the observed boson when compared to
other tested spin-parity hypotheses. The data in the H β ZZ
βΒ 4β channel disfavor the pseudo-scalar hypothesis 0β with a
CLs value of 0.16, disfavor the pure spin-2 hypothesis of a narrow resonance
with the minimal couplings to the vector bosons with a CLs value of 1.5, and
disfavor the pure spin-1 hypothesis with even smaller CLs value.Comment: 11 pages, 11 figures, proceedings of the talk given in the Rencontres
de Moriond Electroweak Interactions and Unified theories 201