Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.11851/9683
Title: | Study of the Spin and Parity of the Higgs Boson in Diboson Decays With the Atlas Detector | Authors: | Aad, G. Abbott, B. Abdallah, J. Abdinov, O. Aben, R. Abolins, M. Adye, T. |
Publisher: | Springer | Abstract: | Studies of the spin, parity and tensor couplings of the Higgs boson in the H -> ZZ* -> 4l, H -> WW* -> e nu mu nu and H -> gamma gamma 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 root s = 7 TeV and root s = 8 TeV. The Standard Model (SM) Higgs boson hypothesis, corresponding 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* -> 4l and H -> WW* -> e nu mu nu. 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. | URI: | https://doi.org/10.1140/epjc/s10052-015-3685-1 https://hdl.handle.net/20.500.11851/9683 |
ISSN: | 1434-6044 1434-6052 |
Appears in Collections: | PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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