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

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

2004-10-28

arxiv.org/abs/hep-ex/0410087v1

Int.J.Mod.Phys. A20 (2005) 3669-3671

Physics

High Energy Physics

High Energy Physics - Experiment

3 pages, 3 figures, submitted to DPF 2004 conference proceedings, UC Riverside, CA

Scientific paper

10.1142/S0217751X05027254

Based on data collected by the CLEO III detector at CESR, we started a series of investigations to open the mysteries of the $\Upsilon$(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 $\Upsilon$(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 $\Upsilon$(5S) energy to be $(21\pm 3 \pm 9)$%.

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