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Abstract:

A search for Higgs boson production in association with a pair of top quarks (tt¯ H) is performed, where the Higgs boson decays to bb¯, and both top quarks decay hadronically. The data used correspond to an integrated luminosity of 20.3 fb −1 of pp collisions at √s = 8 TeV collected with the ATLAS detector at the Large Hadron Collider. The search selects events with at least six energetic jets and uses a boosted decision tree algorithm to discriminate between signal and Standard Model background. The dominant multijet background is estimated using a dedicated data-driven technique. For a Higgs boson mass of 125 GeV, an upper limit of 6.4 (5.4) times the Standard Model cross section is observed (expected) at 95% confidence level. The best-fit value for the signal strength is μ = 1.6 ± 2.6 times the Standard Model expectation for m H = 125 GeV. Combining all tt¯ H searches carried out by ATLAS at √s = 8 and 7 TeV, an observed (expected) upper limit of 3.1 (1.4) times the Standard Model expectation is obtained at 95% confidence level, with a signal strength μ = 1.7 ± 0.8. © 2016, The Author(s).

Registro:

Documento: Artículo
Título:Search for the Standard Model Higgs boson decaying into bb¯ produced in association with top quarks decaying hadronically in pp collisions at √s = 8 TeV with the ATLAS detector
Autor:The ATLAS collaboration et al.
Este artículo contiene 2841 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2841 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Palabras clave:Hadron-Hadron scattering (experiments)
Año:2016
Volumen:2016
Número:5
DOI: http://dx.doi.org/10.1007/JHEP05(2016)160
Título revista:Journal of High Energy Physics
Título revista abreviado:J. High Energy Phys.
ISSN:11266708
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2016_n5_p_TheATLAScollaboration

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Citas:

---------- APA ----------
(2016) . Search for the Standard Model Higgs boson decaying into bb¯ produced in association with top quarks decaying hadronically in pp collisions at √s = 8 TeV with the ATLAS detector. Journal of High Energy Physics, 2016(5).
http://dx.doi.org/10.1007/JHEP05(2016)160
---------- CHICAGO ----------
The ATLAS collaboration. "Search for the Standard Model Higgs boson decaying into bb¯ produced in association with top quarks decaying hadronically in pp collisions at √s = 8 TeV with the ATLAS detector" . Journal of High Energy Physics 2016, no. 5 (2016).
http://dx.doi.org/10.1007/JHEP05(2016)160
---------- MLA ----------
The ATLAS collaboration. "Search for the Standard Model Higgs boson decaying into bb¯ produced in association with top quarks decaying hadronically in pp collisions at √s = 8 TeV with the ATLAS detector" . Journal of High Energy Physics, vol. 2016, no. 5, 2016.
http://dx.doi.org/10.1007/JHEP05(2016)160
---------- VANCOUVER ----------
The ATLAS collaboration. Search for the Standard Model Higgs boson decaying into bb¯ produced in association with top quarks decaying hadronically in pp collisions at √s = 8 TeV with the ATLAS detector. J. High Energy Phys. 2016;2016(5).
http://dx.doi.org/10.1007/JHEP05(2016)160