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Abstract:

We report the observation of Higgs boson decays to WW ∗ based on an excess over background of 6.1 standard deviations in the dilepton final state, where the Standard Model expectation is 5.8 standard deviations. Evidence for the vector-boson fusion (VBF) production process is obtained with a significance of 3.2 standard deviations. The results are obtained from a data sample corresponding to an integrated luminosity of 25 fb -1 from √s = 7 and 8 TeV pp collisions recorded by the ATLAS detector at the LHC. For a Higgs boson mass of 125.36 GeV, the ratio of the measured value to the expected value of the total production cross section times branching fraction is 1.09 +0.16 -0.15 (stat) +0.17 -0.14 (syst). The corresponding ratios for the gluon fusion and vector-boson fusion production mechanisms are 1.02 ± 0.19(stat) +0.22 -0.18 (syst) and 1.27 +0.44 -0.40 (stat) +0.30 -0.21 (syst), respectively. At √s = 8 TeV, the total production cross sections are measured to be σ(gg→H→WW ∗ )=4.6±0.9(stat) +0.8 -0.7 (syst) pb and σ(VBF H → WW ∗ )=0.51 +0.17 -0.15 (stat) +0.13 -0.08 (syst)pb. The fiducial cross section is determined for the gluon-fusion process in exclusive final states with zero or one associated jet. © 2015 CERN, for the ATLAS Collaboration.

Registro:

Documento: Artículo
Título:Observation and measurement of Higgs boson decays to WW ∗ with the ATLAS detector
Autor:Aad, G. et al.
Este artículo contiene 2877 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2877 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Año:2015
Volumen:92
Número:1
DOI: http://dx.doi.org/10.1103/PhysRevD.92.012006
Título revista:Physical Review D - Particles, Fields, Gravitation and Cosmology
Título revista abreviado:Phys Rev D Part Fields Gravit Cosmol
ISSN:15507998
CODEN:PRVDA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v92_n1_p_Aad

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Citas:

---------- APA ----------
(2015) . Observation and measurement of Higgs boson decays to WW ∗ with the ATLAS detector. Physical Review D - Particles, Fields, Gravitation and Cosmology, 92(1).
http://dx.doi.org/10.1103/PhysRevD.92.012006
---------- CHICAGO ----------
Aad, G. "Observation and measurement of Higgs boson decays to WW ∗ with the ATLAS detector" . Physical Review D - Particles, Fields, Gravitation and Cosmology 92, no. 1 (2015).
http://dx.doi.org/10.1103/PhysRevD.92.012006
---------- MLA ----------
Aad, G. "Observation and measurement of Higgs boson decays to WW ∗ with the ATLAS detector" . Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 92, no. 1, 2015.
http://dx.doi.org/10.1103/PhysRevD.92.012006
---------- VANCOUVER ----------
Aad, G. Observation and measurement of Higgs boson decays to WW ∗ with the ATLAS detector. Phys Rev D Part Fields Gravit Cosmol. 2015;92(1).
http://dx.doi.org/10.1103/PhysRevD.92.012006