Observation of $D^*$+- and ($\bar{D}$)0 / $D^\pm$ Production in High-energy $\pi^-$ Be Interactions at the {SPS}

The ACCMOR & Amsterdam-Bristol-CERN-Cracow-Munich-Rutherford collaborations Bailey, R. ; Bardsley, D.G. ; Becker, H. ; et al.
Phys.Lett.B 132 (1983) 230-236, 1983.
Inspire Record 190658 DOI 10.17182/hepdata.30633

An experiment has been performed to search for associated hadronic production of charmed mesons, using a large-aperture forward magnetic spectrometer setup in a π − beam at the CERN SPS. A prompt electron trigger was used to select events containing a pair by charmed particles. D mesons have been identified by reconstruction of hadronic decay modes such as Kπ, Kππ. Data have been taken at 120, 175, and 200 GeV, The D D cross section measured at 175 200 GeV is σ( D D ) = (48 ± 15) μ b with a systematic uncertainty of ±50%. The energy dependence of the cross section is measured to be σ( D D ) [120 GeV )/σ( D D [175/200 GeV ] = 0.62 ± 0.34 .

2 data tables

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