Production of prompt electrons in the charm Pt region at [formula omitted]

The production of prompt electrons at s = 630 GeV has been measured in the p t range 0.5–2.0 GeV/ c and the pseudorapidity range 1.1–1.7, using a ring imaging Cherenkov (RICH) counter installed in the UA2 experiment at the CERN pp̄ collider. From our measurement of the electron/hadron ratio in the p...

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Published inPhysics letters. B Vol. 236; no. 4; pp. 488 - 494
Main Authors Botner, O., Eek, L.O., Ekelöf, T., Fransson, K., Hallgren, A., Kostarakis, P., Lenzen, G., Lund-Jensen, B.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.03.1990
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Summary:The production of prompt electrons at s = 630 GeV has been measured in the p t range 0.5–2.0 GeV/ c and the pseudorapidity range 1.1–1.7, using a ring imaging Cherenkov (RICH) counter installed in the UA2 experiment at the CERN pp̄ collider. From our measurement of the electron/hadron ratio in the p t range 0.9–1.5 GeV/ c we conclude that the total charm production cross section at s = 630 GeV does not exceed 1.9 mb at 95% CL. As our best estimate we obtain σ tot (c c ̄ )=0.68 ±0.56 (stat.) ±0.25 (sys., exp.)±0.21 (sys., theory) mb.
ISSN:0370-2693
1873-2445
DOI:10.1016/0370-2693(90)90389-N