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arXiv · 0910.3013

Measurement of B_c properties at CDF

T. S. Nigmanov·K. R. Gibson·M. P. Hartz·P. F. Shepard
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Abstract

The Bc meson is composed of two heavy quarks of distinct flavor. Measurements of its lifetime and production properties have been made based on semileptonic Bc to J/psi+l+X decays using data collected with the CDF II detector corresponding to an integrated luminosity of 1 fb-1. The Bc average lifetime ctau is measured to be 142.5+15.8-14.8(stat) 5.5(syst) mum. The measurements of the ratio of the production cross section times branching ratio of Bc to J/psi+mu+nu relative to B+ to J/psi+K were done for two pT(B) thresholds: for pT(B) greater 4 GeV/c as 0.295+/-0.040(stat)+0.033-0.026(syst.)0.036(pT spectrum) and for pT(B) greater 6 GeV/c as 0.227+/-0.033(stat)+0.024-0.017(syst.)+/-0.014(pT spectrum).

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T. S. Nigmanov, K. R. Gibson, M. P. Hartz, P. F. Shepard. 2009-10-16. Measurement of B_c properties at CDF. https://arxiv.org/abs/0910.3013

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