362 articles – 2931 Notices  [english version]
 HAL : in2p3-00704228, version 1
 arXiv : 1206.0687
 Physical Review D 86 (2012) 012009
 Measurement of the differential cross section d\sigma/dt in elastic $p\bar{p}$ scattering at sqrt(s)=1.96 TeV
 D0 Collaboration(s)
 (2012)
 We present a measurement of the elastic differential cross section $d\sigma(p\bar{p}\rightarrow p\bar{p})/dt$ as a function of the four-momentum-transfer squared t. The data sample corresponds to an integrated luminosity of $\approx 31 nb^{-1}$ collected with the D0 detector using dedicated Tevatron $p\bar{p}$ Collider operating conditions at sqrt(s) = 1.96 TeV and covers the range $0.26 <|t|< 1.2 GeV^2$. For $|t|<0.6 GeV^2$, d\sigma/dt is described by an exponential function of the form $Ae^{-b|t|}$ with a slope parameter $b = 16.86 \pm 0.10(stat) \pm 0.20(syst) GeV^{-2}$. A change in slope is observed at $|t| \approx 0.6 GeV^2$, followed by a more gradual |t| dependence with increasing values of |t|.
 Thème(s) : Physique/Physique des Hautes Energies - Expérience
 Lien vers le texte intégral : http://fr.arXiv.org/abs/1206.0687
 in2p3-00704228, version 1 http://hal.in2p3.fr/in2p3-00704228 oai:hal.in2p3.fr:in2p3-00704228 Contributeur : Emmanuelle Vernay <> Soumis le : Mardi 5 Juin 2012, 09:00:53 Dernière modification le : Lundi 30 Juillet 2012, 09:02:14