Direct photon cross-section from Run Ib inclusive electron events at CDF

Details Direct photon cross-section from Run Ib inclusive electron events at CDF Direct photon cross-section from Run Ib inclusive electron events at CDF

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..apru15005h&link_type=abstract

American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As

Astronomy and Astrophysics

Astrophysics

Scientific paper

We present a new background subtraction technique for photon physics at CDF based upon inner detector conversions. The conversion is reconstructed by both the tracking chamber and the calorimeter, and the two measurements are compared to separate π^0 and η decays from prompt photons. We use this method to measure the inclusive photon cross-section with Run Ib data. The new measurement is most sensitive in the low pT region where a cross-section excess over NLO QCD predictions has been observed by conventional photon analyses.

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