TY  - SER
AU  - Aad,G.
AU  - Abdallah,J.
AU  - Chelkov,G.A.
AU  - Abbott,B.
ED  - Томский государственный университет
TI  - Study of the spin and parity of the Higgs boson in diboson decays with the ATLAS detector
KW  - ATLAS, детектор
KW  - Большой адронный коллайдер
KW  - Хиггса бозон
KW  - статьи в журналах
N1  - Библиогр.: 44 назв
N2  - Studies of the spin, parity and tensor couplingsof the Higgs boson in the H → ZZ∗ → 4, H → WW∗ → eνμν and H → γγ decay processes at the LHC are presented. The investigations are based on 25 fb−1 of pp collision data collected by the ATLAS experiment at √s = 7 TeV and √s = 8 TeV. The Standard Model (SM) Higgs boson hypothesis, сorresponding to the quantum numbers J P = 0+, is tested against several alternative spin scenarios, including non-SM spin-0 and spin-2 models with universal and non-universal couplings to fermions and vector bosons. All tested alternative models are excluded in favour of the SM Higgs boson hypothesis at more than 99.9% confidence level. Using the H → ZZ∗ → 4 and H → WW∗ → eνμν decays, the tensor structure of the interaction between the spin-0 boson and the SM vector bosons is also investigated. The observed distributions of variables sensitive to the non-SM tensor couplings are compatible with the SM predictions and constraints on the non-SM couplings are derived
UR  - http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000525352
ER  -