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Abstract:

This Letter reports the observation of a high transverse momentum Z→bb¯ signal in proton–proton collisions at s=8 TeV and the measurement of its production cross section. The data analysed were collected in 2012 with the ATLAS detector at the LHC and correspond to an integrated luminosity of 19.5 fb −1 . The Z→bb¯ decay is reconstructed from a pair of b-tagged jets, clustered with the anti-k t jet algorithm with R=0.4, that have low angular separation and form a dijet with p T >200 GeV. The signal yield is extracted from a fit to the dijet invariant mass distribution, with the dominant, multi-jet background mass shape estimated by employing a fully data-driven technique that reduces the dependence of the analysis on simulation. The fiducial cross section is determined to be σ Z→bb¯ fid =2.02±0.20 (stat.) ±0.25 (syst.)±0.06 (lumi.) pb=2.02 ±0.33 pb, in good agreement with next-to-leading-order theoretical predictions. © 2014

Registro:

Documento: Artículo
Título:Measurement of the cross section of high transverse momentum Z→bb¯ production in proton–proton collisions at √s=8 TeV with the ATLAS detector
Autor:Aad, G. et al.
Este artículo contiene 2878 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2878 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Palabras clave:Boosted bb¯ topologies; LHC
Año:2014
Volumen:738
Página de inicio:25
Página de fin:43
DOI: http://dx.doi.org/10.1016/j.physletb.2014.09.020
Título revista:Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Título revista abreviado:Phys Lett Sect B Nucl Elem Part High-Energy Phys
ISSN:03702693
CODEN:PYLBA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v738_n_p25_Aad

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Citas:

---------- APA ----------
(2014) . Measurement of the cross section of high transverse momentum Z→bb¯ production in proton–proton collisions at √s=8 TeV with the ATLAS detector. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 738, 25-43.
http://dx.doi.org/10.1016/j.physletb.2014.09.020
---------- CHICAGO ----------
Aad, G. "Measurement of the cross section of high transverse momentum Z→bb¯ production in proton–proton collisions at √s=8 TeV with the ATLAS detector" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 738 (2014) : 25-43.
http://dx.doi.org/10.1016/j.physletb.2014.09.020
---------- MLA ----------
Aad, G. "Measurement of the cross section of high transverse momentum Z→bb¯ production in proton–proton collisions at √s=8 TeV with the ATLAS detector" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 738, 2014, pp. 25-43.
http://dx.doi.org/10.1016/j.physletb.2014.09.020
---------- VANCOUVER ----------
Aad, G. Measurement of the cross section of high transverse momentum Z→bb¯ production in proton–proton collisions at √s=8 TeV with the ATLAS detector. Phys Lett Sect B Nucl Elem Part High-Energy Phys. 2014;738:25-43.
http://dx.doi.org/10.1016/j.physletb.2014.09.020