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arXiv · 1010.0262

Precise study of the Z/gamma* boson transverse momentum distribution in ppbar collisions using a novel technique

D0 Collaboration·V. M. Abazov
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Abstract

Using 7.3 pb-1 of ppbar collisions collected by the D0 detector at the Fermilab Tevatron, we measure the distribution of the variable \phistar, which probes the same physical effects as the Z/gamma* 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 \phistar 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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D0 Collaboration, V. M. Abazov. 2010-10-05. Precise study of the Z/gamma* boson transverse momentum distribution in ppbar collisions using a novel technique. https://doi.org/10.1103/physrevlett.106.122001

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