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

Collaboration, D0 and Bertram, Iain and Borissov, Guennadi and Fox, Harald and Ross, Anthony and Williams, Mark and Ratoff, Peter and Love, Peter and Sopczak, Andre (2011) Precise study of the Z/gamma* boson transverse momentum distribution in ppbar collisions using a novel technique. Physical review letters, 106 (12). ISSN 1079-7114

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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.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Additional Information:
© 2011 American Physical Society 12 pages, 3 figures
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
63684
Deposited By:
Deposited On:
24 Apr 2013 10:44
Refereed?:
Yes
Published?:
Published
Last Modified:
14 Jul 2020 03:29