Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
1995-05-08
Phys.Lett. B353 (1995) 547-553
Physics
High Energy Physics
High Energy Physics - Experiment
10 pages, LaTeX, 4 (pages) postscript figures
Scientific paper
10.1016/0370-2693(95)00627-W
We study the production characteristics of 557 pairs of charmed hadrons produced in $\pi^{-}-Cu$\ interactions at 230~GeV/c using a momentum estimator for charmed hadrons with missing decay products. We find, the mean value of the transverse momentum squared of the charmed pairs is $<$\pts$>=(1.98\pm 0.11\pm 0.09)\;$ GeV$^2$/c$^2$, the mean rapidity difference is $<|$\yd$|>=0.54\pm 0.02\pm 0.24$, and the mean effective mass is $<$\mef$>=(4.45\pm 0.03\pm 0.13)\;$ GeV/c$^2$. Comparing these results with the next-to-leading order QCD predictions we find an agreement for the \yd\ and \mef, whilst the measured mean value of \pts\ is significantly larger than the predicted value.
Rybicki Kacper
Rylko R.
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