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Evidence for B^(*)_s Production at the Upsilon(5S)

R. Sia
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Abstract

Based on data collected by the CLEO III detector at CESR, we started a series of investigations to open the mysteries of the $Υ$(5S) resonance decay properties. $B_s$ mesons are expected to decay predominantly into $D_s$ meson, while the lighter $B$ mesons decay into $D_s$ only about 10% of the time. We exploit this difference to present the first evidence of a substantial production of $B_s$ mesons at the $Υ$(5S) resonance. We make here a preliminary model dependent estimate of the ratio of $B_s^{(*)}\bar{B}_s^{(*)}$ to the total $b\bar{b}$ quark pair production at the $Υ$(5S) energy to be $(21\pm 3 \pm 9)$%.

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R. Sia. 2004-10-28. Evidence for B^(*)_s Production at the Upsilon(5S). https://doi.org/10.1142/s0217751x05027254

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