Open beauty production in high energy π−-tungsten interactions

We present a study of\(B\bar B\) meson pair production inπ− interactions at 140, 194 and 286 GeV incident pion energy. At 286 GeV, where we have the best statistics, we find a model-dependent\(B\bar B\) production cross-section\(\sigma _{BB} = 14_{ - 6}^{ + 7} nb/nucleon\).