HAL : in2p3-00523411, version 1
 arXiv : 1010.0262
 Physical Review Letters 106 (2011) 122001
 Precise study of the Z/gamma* boson transverse momentum distribution in ppbar collisions using a novel technique
 D0 Collaboration(s)
 (2011)
 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.
 Thème(s) : Physique/Physique des Hautes Energies - Expérience
 Lien vers le texte intégral : http://fr.arXiv.org/abs/1010.0262
 in2p3-00523411, version 1 http://hal.in2p3.fr/in2p3-00523411 oai:hal.in2p3.fr:in2p3-00523411 Contributeur : Swarna Bassava <> Soumis le : Mardi 5 Octobre 2010, 11:13:19 Dernière modification le : Mardi 22 Mars 2011, 09:02:23