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https://hdl.handle.net/2440/81987
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dc.contributor.author | Aad, G. | - |
dc.contributor.author | Jackson, P. | - |
dc.contributor.author | Soni, N. | - |
dc.contributor.author | White, M. | - |
dc.contributor.other | Jackson, Paul Douglas | - |
dc.contributor.other | Soni, Nitesh | - |
dc.contributor.other | White, Martin | - |
dc.date.issued | 2013 | - |
dc.identifier.citation | Physics Letters B: Nuclear Physics and Particle Physics, 2013; 726(1-3):120-144 | - |
dc.identifier.issn | 0370-2693 | - |
dc.identifier.issn | 1873-2445 | - |
dc.identifier.uri | http://hdl.handle.net/2440/81987 | - |
dc.description | ATLAS Collaboration contributors: P. D. Jackson, N. Soni and M. White for the University of Adelaide. | - |
dc.description.abstract | Studies of the spin and parity quantum numbers of the Higgs boson are presented, based on proton-proton collision data collected by the ATLAS experiment at the LHC. The Standard Model spin-parity JP=0+ hypothesis is compared with alternative hypotheses using the Higgs boson decays H→γγ, H→ZZ*→4ℓ and H→WW*→ℓνℓν, as well as the combination of these channels. The analysed dataset corresponds to an integrated luminosity of 20.7 fb-1 collected at a centre-of-mass energy of s=8TeV. For the H→ZZ*→4ℓ decay mode the dataset corresponding to an integrated luminosity of 4.6 fb-1 collected at s=7TeV is included. The data are compatible with the Standard Model JP=0+ quantum numbers for the Higgs boson, whereas all alternative hypotheses studied in this Letter, namely some specific JP=0-, 1+, 1-, 2+ models, are excluded at confidence levels above 97.8%. This exclusion holds independently of the assumptions on the coupling strengths to the Standard Model particles and in the case of the JP=2+ model, of the relative fractions of gluon-fusion and quark-antiquark production of the spin-2 particle. The data thus provide evidence for the spin-0 nature of the Higgs boson, with positive parity being strongly preferred. © 2013 CERN. | - |
dc.description.statementofresponsibility | ATLAS Collaboration | - |
dc.language.iso | en | - |
dc.publisher | Elsevier Science BV | - |
dc.rights | © 2013 CERN. | - |
dc.source.uri | http://dx.doi.org/10.1016/j.physletb.2013.08.026 | - |
dc.subject | Higgs boson | - |
dc.subject | Spin | - |
dc.subject | Parity | - |
dc.title | Evidence for the spin-0 nature of the Higgs boson using ATLAS data | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1016/j.physletb.2013.08.026 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Jackson, P. [0000-0002-0847-402X] | - |
dc.identifier.orcid | White, M. [0000-0001-5474-4580] | - |
Appears in Collections: | Aurora harvest Chemistry and Physics publications |
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