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https://hdl.handle.net/10316/109633
Título: | Search for Higgs boson decays to a photon and a Z boson in pp collisions at s=7 and 8 TeV with the ATLAS detector | Autor: | Santos, S. P. Amor dos Carvalho, J. Fiolhais, M. C. N. Galhardo, B. Veloso, F. Wolters, H. ATLAS Collaboration |
Data: | 2014 | Editora: | Elsevier | Título da revista, periódico, livro ou evento: | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Volume: | 732 | Resumo: | A search is reported for a neutral Higgs boson in the decay channel H→Zγ, Z→ℓ +ℓ -(ℓ = e, μ), using 4.5 fb-1of pp collisions at s=7 TeV and 20.3 fb-1of pp collisions at s=8 TeV, recorded by the ATLAS detector at the CERN Large Hadron Collider. The observed distribution of the invariant mass of the three final-state particles,mℓℓγ, is consistent with the Standard Model hypothesis in the investigated mass range of 120-150 GeV. For a Higgs boson with a mass of 125.5 GeV, the observed upper limit at the 95% confidence level is 11 times the Standard Model expectation. Upper limits are set on the cross section times branching ratio of a neutral Higgs boson with mass in the range 120-150 GeV between 0.13 and 0.5 pb for s=8 TeV at 95% confidence level. | URI: | https://hdl.handle.net/10316/109633 | DOI: | 10.1016/j.physletb.2014.03.015 | Direitos: | openAccess |
Aparece nas coleções: | FCTUC Física - Artigos em Revistas Internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Search for Higgs boson decays to a photon and a Z boson in pp collisions at s=7 and 8 TeV with the ATLAS detector.pdf | 1.16 MB | Adobe PDF | Ver/Abrir |
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