DØ Direct Photon Analysis

Approved Photon Plots

Cross Section paper accepted for publication in PRL; hep-ex/9912017, Fermilab-Conf-99/354-E.

• 1B Cross Section Physics Note Latest Draft (June 1999)
• Purity fits by ET bin, CC, as used (and if the MC is smoothed). The resulting purity as a table.
• Purity fits by ET bin, EC, as used (and if the MC is smoothed). The resulting purity as a table.
• Comments from Editorial Board, QCD group, and Physics Convenors
  • Meenakshi Narain Daniel Elvira Mitch Wayne Greg Snow Pierrick Hanlet Andrew Brandt Levan Babukhadia Darien Wood Jianming Qian
• Comments from Collaboration Review period
  • Rochester group Hugh Montgomery Iain Bertram Greg Landsberg Ann Heinson Sharon Hagopian Ron Madaras Steve Wasserbaech Bruce Hoeneisen Dave Hedin Paul Grannis
• Figures
  • Figure 1 Figure 2 Figure 3 Figure 4

Diphoton Cross Section

Onur Mentes, Rod Engelmann. New results posted June 2000.

• Physics Note (D0 Note 3737)
• PRL Draft

Recent Talks

• Moriond 97
• QCD '97: Talk on Direct Photon Measurements at DØ and conference proceedings; Montpellier, France - 3 July, 1997.
• PHENO/CTEQ '98: Talk on Direct Photon Measurements at DØ; Madison, WI - 25 March, 1998.
• Hadron Collider Physics '99: CDF and DØ Photon and Di-Photon Results Talk and Paper; Mumbai, India - 15 January, 1999,

Older information (obsolete)

• Isolated Photon Cross Section, Central and Forward
  • Steve Jerger's thesis, Dec 97 (Adobe PDF file) The 1B measurement.
  • PRL 77 (1996) 5011 "The Isolated Photon Cross Section in the Central and Forward Rapidity Regions in ppbar Collisions at sqrt(s)=1.8 TeV." The Run IA measurement.
  • EM1/E distribution (Fig.1)
  • Purity vs. ET (Fig.2)
  • Cross Section vs. ET (Fig.3)
  • Data - Theory / Theory vs. ET (Fig.4)
  • Ratio of Forward to Central cross section (Fig.5)
  • Cross Section data from this paper as available from the Durham-RAL database.

• Diphotons
  • Wei Chen's diphoton results.

• Photon+Jet Angular Distribution
  • DPF 94 Paper (Paul Rubinov)
  • Regions of phase space used in this analysis
  • Final angular distribution dN/dcos(theta*)

• Photon+Jet Invariant Mass Distribution
  • Photon-Jet Invariant Mass plot

• Boson+Jet Event Structure
  • APS 95 Paper (Steve Jerger)
  • Figure 1 Figure 2 Figure 3 Figure 4