INVESTIGADORES
WAHLBERG Hernan Pablo
artículos
Título:
Measurement of the cross section of high transverse momentum View the MathML sourceZ→bb¯ production in proton?proton collisions at View the MathML sources=8 TeV with the
Autor/es:
H. WAHLBERG Y ATLAS COLLABORATION
Revista:
PHYSICS LETTERS B
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2014
ISSN:
0370-2693
Resumen:
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-ktkt jet algorithm with R=0.4R=0.4, that have low angular separation and form a dijet with pT>200 GeVpT>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