Observation of D-pi Production Correlations in 500 GeV pi- - N Interactions

Details Observation of D-pi Production Correlations in 500 GeV pi- - N Interactions Observation of D-pi Production Correlations in 500 GeV pi- - N Interactions

2000-01-02

arxiv.org/abs/hep-ex/0001004v1

Phys.Lett.B403:185-190,1997

Physics

High Energy Physics

High Energy Physics - Experiment

12 pages and 2 figures

Scientific paper

10.1016/S0370-2693(97)00492-9

We study the charge correlations between charm mesons produced in 500 GeV pi- - N interactions and the charged pions produced closest to them in phase space. With 110,000 fully reconstructed D mesons from experiment E791 at Fermilab, the correlations are studied as functions of the Dpi - D mass difference and of Feynman x. We observe significant correlations which appear to originate from a combination of sources including fragmentation dynamics, resonant decays, and charge of the beam.

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