Measurement of associated production of z bosons with charm quark jets in pp collisions at âs=1.96 TeV.
Phys Rev Lett
; 112(4): 042001, 2014 Jan 31.
Article
em En
| MEDLINE
| ID: mdl-24580440
ABSTRACT
We present the first measurements of the ratios of cross sections σ(pp â Z+c jet)/σ(pp â Z+jet) and σ(pp â Z+c jet)/σ(pp â Z+b jet) for the associated production of a Z boson with at least one charm or bottom quark jet. Jets have transverse momentum âpT(jet)â>20 GeV and pseudorapidity |âη(jet)â|<2.5. These cross section ratios are measured differentially as a function of jet and Z boson transverse momenta, based on 9.7 fb(-1) of pp collisions collected with the D0 detector at the Fermilab Tevatron Collider at âs=1.96 TeV. The measurements show significant deviations from perturbative QCD calculations and predictions from various event generators.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Risk_factors_studies
Idioma:
En
Revista:
Phys Rev Lett
Ano de publicação:
2014
Tipo de documento:
Article
País de afiliação:
Federação Russa