HAL : in2p3-00023319, version 1
 arXiv : hep-ex/0410078
 Physical Review Letters 94 (2005) 161801-1-161801-7
 Measurement of the ratio of inclusive cross sections $\sigma (p\overline{p} \rightarrow Z + b jet)/ \sigma(p\overline{p}\rightarrow Z + jet)$ at $\sqrt{s}$ = 1.96 TeV
 D0 Collaboration(s)
 (2005)
 Using the data collected with the DZero detector at sqrt(s)=1.96-TeV, for integrated luminosities of about 180 pb^{-1}, we have measured the ratio of inclusive cross sections for p+pbar->Z+bjet to p+pbar->Z+jet production. The inclusive Z+b-jet reaction is an important background to searches for the Higgs boson in associated ZH production at the Fermilab Tevatron collider. Our measurement is the first of its kind, and relies on the Z->e^+e^- and Z->mu^+mu^- modes. The combined measurement of the ratio yields 0.023 +/- 0.005 for hadronic jets with transverse momenta p_T>20 GeV/c and pseudorapidities |eta|<2.5, consistent with next-to-leading order predictions of the standard model.
 Thème(s) : Physique/Physique des Hautes Energies - Expérience
 Mot(s)-clé(s) : proton-proton inclusive interactions – Z bosons – Higgs bosons – intermediate boson decay – standard model
 Lien vers le texte intégral : http://fr.arXiv.org/abs/hep-ex/0410078
 in2p3-00023319, version 1 http://hal.in2p3.fr/in2p3-00023319 oai:hal.in2p3.fr:in2p3-00023319 Contributeur : Yvette Heyd <> Soumis le : Jeudi 18 Novembre 2004, 10:49:27 Dernière modification le : Mardi 27 Juin 2006, 11:18:08