Study of the mass and spin-parity of the Higgs boson candidate via its decays to Z boson pairs
Type :
Article
Publication Status :
published
Access :
restrictedAccess
Abstract
A study is presented of the mass and spin-parity of the new boson recently observed at the LHC at a mass near 125 GeV. An integrated luminosity of 17: 3 fb(-1), collected by the CMS experiment in proton-proton collisions at center-of-mass energies of 7 and 8 TeV, is used. The measured mass in the ZZ channel, where both Z bosons decay to e or mu pairs, is 126: 2 +/- 0.6(stat) +/- 0. 2(syst) GeV. The angular distributions of the lepton pairs in this channel are sensitive to the spin-parity of the boson. Under the assumption of spin 0, the present data are consistent with the pure scalar hypothesis, while disfavoring the pure pseudoscalar hypothesis.
Source :
Physical Review Letters
Date :
2013
Volume :
110
Issue :
8
Publisher :
American Physical Society
URI
http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.110.081803http://hdl.handle.net/10679/626
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