Search for Higgs Boson Pair Production in the γγbb¯ Final State Using pp Collision Data at √s = 8 TeV from the ATLAS Detector
Searches are performed for resonant and nonresonant Higgs boson pair production in the γγbb¯ final state using 20 fb<sup>-1</sup> of proton-proton collisions at a center-of-mass energy of 8 TeV recorded with the ATLAS detector at the CERN Large Hadron Collider. A 95% confidence level upp...
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| Autores principales: | , , , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2015
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/86840 |
| Aporte de: |
| Sumario: | Searches are performed for resonant and nonresonant Higgs boson pair production in the γγbb¯ final state using 20 fb<sup>-1</sup> of proton-proton collisions at a center-of-mass energy of 8 TeV recorded with the ATLAS detector at the CERN Large Hadron Collider. A 95% confidence level upper limit on the cross section times branching ratio of nonresonant production is set at 2.2 pb, while the expected limit is 1.0 pb. The difference derives from a modest excess of events, corresponding to 2.4 standard deviations from the background-only hypothesis. The limit observed in the search for a narrow X→hh resonance ranges between 0.7 and 3.5 pb as a function of the resonance mass. |
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