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

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

2004-08-16

arxiv.org/abs/hep-ex/0408070v1

Phys.Rev.Lett. 95 (2005) 261801

Physics

High Energy Physics

High Energy Physics - Experiment

17 pages postscript,also available through http://www.lns.cornell.edu/public/CONF/2004/, Presented at ICHEP Aug 16-22,2004,

Scientific paper

Using data collected by the CLEO III detector at CESR, we started a series of investigations on the Upsilon(5S) resonance decay properties. The data sample used for this analysis consists of 0.42 fb-1 of data taken on the Upsilon(5S) resonance, 6.34 fb-1 of data collected on the Upsilon(4S) and 2.32 fb-1 of data taken in the continuum below the Upsilon(4S). 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 make a preliminary model dependent estimate of the ratio of B_s(*) anti-B_s(*) to the total b anti-b quark pair production at the Upsilon(5S) energy to be (21 +- 3 +- 9)%.

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