Search for the Standard Model Higgs boson in the decay channel H → ZZ(<sup>∗</sup>) → 4ℓ with 4.8 fb<sup>-1</sup> of pp collision data at √s = 7 TeV with ATLAS
This Letter presents a search for the Standard Model Higgs boson in the decay channel H → ZZ(<sup>∗</sup>) → ℓ+ℓ-ℓ'+ℓ'-, where ℓ,ℓ' =e or μ, using proton–proton collisions at √s = 7 TeV recorded with the ATLAS detector and corresponding to an integrated luminosity of 4.8 f...
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| Autores principales: | , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2012
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/80270 |
| Aporte de: |
| id |
I19-R120-10915-80270 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Exactas Física standard model Higgs boson proton-proton collisions leptons la̵rge hadron collider |
| spellingShingle |
Ciencias Exactas Física standard model Higgs boson proton-proton collisions leptons la̵rge hadron collider Anduaga, Xabier Sebastián Dova, María Teresa Monticelli, Fernando Gabriel Tripiana, Martín F. The ATLAS Collaboration Search for the Standard Model Higgs boson in the decay channel H → ZZ(<sup>∗</sup>) → 4ℓ with 4.8 fb<sup>-1</sup> of pp collision data at √s = 7 TeV with ATLAS |
| topic_facet |
Ciencias Exactas Física standard model Higgs boson proton-proton collisions leptons la̵rge hadron collider |
| description |
This Letter presents a search for the Standard Model Higgs boson in the decay channel H → ZZ(<sup>∗</sup>) → ℓ+ℓ-ℓ'+ℓ'-, where ℓ,ℓ' =e or μ, using proton–proton collisions at √s = 7 TeV recorded with the ATLAS detector and corresponding to an integrated luminosity of 4.8 fb<sup>-1</sup>. The four-lepton invariant mass distribution is compared with Standard Model background expectations to derive upper limits on the cross section of a Standard Model Higgs boson with a mass between 110 GeV and 600 GeV. The mass ranges 134–156 GeV, 182–233 GeV, 256–265 GeV and 268–415 GeV are excluded at the 95% confidence level. The largest upward deviations from the background-only hypothesis are observed for Higgs boson masses of 125 GeV, 244 GeV and 500 GeV with local significances of 2.1, 2.2 and 2.1 standard deviations, respectively. Once the look-elsewhere effect is considered, none of these excesses are significant. |
| format |
Articulo Articulo |
| author |
Anduaga, Xabier Sebastián Dova, María Teresa Monticelli, Fernando Gabriel Tripiana, Martín F. The ATLAS Collaboration |
| author_facet |
Anduaga, Xabier Sebastián Dova, María Teresa Monticelli, Fernando Gabriel Tripiana, Martín F. The ATLAS Collaboration |
| author_sort |
Anduaga, Xabier Sebastián |
| title |
Search for the Standard Model Higgs boson in the decay channel H → ZZ(<sup>∗</sup>) → 4ℓ with 4.8 fb<sup>-1</sup> of pp collision data at √s = 7 TeV with ATLAS |
| title_short |
Search for the Standard Model Higgs boson in the decay channel H → ZZ(<sup>∗</sup>) → 4ℓ with 4.8 fb<sup>-1</sup> of pp collision data at √s = 7 TeV with ATLAS |
| title_full |
Search for the Standard Model Higgs boson in the decay channel H → ZZ(<sup>∗</sup>) → 4ℓ with 4.8 fb<sup>-1</sup> of pp collision data at √s = 7 TeV with ATLAS |
| title_fullStr |
Search for the Standard Model Higgs boson in the decay channel H → ZZ(<sup>∗</sup>) → 4ℓ with 4.8 fb<sup>-1</sup> of pp collision data at √s = 7 TeV with ATLAS |
| title_full_unstemmed |
Search for the Standard Model Higgs boson in the decay channel H → ZZ(<sup>∗</sup>) → 4ℓ with 4.8 fb<sup>-1</sup> of pp collision data at √s = 7 TeV with ATLAS |
| title_sort |
search for the standard model higgs boson in the decay channel h → zz(<sup>∗</sup>) → 4ℓ with 4.8 fb<sup>-1</sup> of pp collision data at √s = 7 tev with atlas |
| publishDate |
2012 |
| url |
http://sedici.unlp.edu.ar/handle/10915/80270 |
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