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Precise study of the Z/gamma* boson transverse momentum distribution in ppbar collisions using a novel technique
- 1.0367622 - FZÚ 2013 RIV US eng J - Journal Article
Abazov, V. M. - Abbott, B. - Abolins, M. - Kupčo, Alexander - Lokajíček, Miloš … Total 433 authors
Precise study of the Z/gamma* boson transverse momentum distribution in ppbar collisions using a novel technique.
Physical Review Letters. Roč. 106, č. 12 (2011), "122001-1"-"122001-7". ISSN 0031-9007. E-ISSN 1079-7114
R&D Projects: GA MŠMT LA08047
Institutional research plan: CEZ:AV0Z10100502
Keywords : Tevatron * D0 * Z0 * photon * lepton * dilepton
Subject RIV: BF - Elementary Particles and High Energy Physics
Impact factor: 7.370, year: 2011
Using 7.3 fb(-1) of p (p) over bar collisions collected by the D0 detector at the Fermilab Tevatron, we measure the distribution of the variable phi(eta)*, 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 phi(eta)* 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.
Permanent Link: http://hdl.handle.net/11104/0202224
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