Precise study of the Z/γ* boson transverse momentum distribution in pp collisions using a novel technique.
Phys Rev Lett
; 106(12): 122001, 2011 Mar 25.
Article
em En
| MEDLINE
| ID: mdl-21517304
ABSTRACT
Using 7.3 fb⻹ of pp collisions collected by the D0 detector at the Fermilab Tevatron, we measure the distribution of the variable φ(η)*, which probes the same physical effects as the Z/γ* boson transverse momentum, but is less susceptible to the effects of experimental resolution and efficiency. A QCD prediction is found to describe the general features of the φ(η)* distribution, but is unable to describe its detailed shape or dependence on boson rapidity. A prediction that includes a broadening of transverse momentum for small values of the parton momentum fraction is strongly disfavored.
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Base de dados:
MEDLINE
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
Phys Rev Lett
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Federação Russa