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Upper limit of D<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mi /><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>production in central Pb-Pb collisions at 158<i>A</i>GeV
Results are presented from a search for the decays D0→K−π+ and ¯D0→K+π− in a sample of 3.8×106 central Pb-Pb events collected with a beam energy of 158A GeV by NA49 at the CERN SPS. No signal is observed. An upper limit on D0 production is derived and compared to predictions …