Measurement of B0 and B+ Lifetimes Using Semileptonic Decays at CDF. PDF Download

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Measurement of B0 and B+ Lifetimes Using Semileptonic Decays at CDF.

Measurement of B0 and B+ Lifetimes Using Semileptonic Decays at CDF. PDF Author:
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Languages : en
Pages : 75

Book Description
Lifetime measurements for B0 and B+ are presented using semileptonic decays of B mesons from 360 pb-1 of data collected by CDF's lepton plus displaced track trigger. The decays B 2!l[nu]DX, where D is either D +, D0, or D* +, are partially reconstructed from a muon or electron, a displaced track, and a fully reconstructed charm meson. The B 0 and B+ lifetimes are obtained from an unbinned maximum-likelihood fit to the proper decay length distributions. The measured lifetimes are [tau]B 0 = 1.527 ± 0.012(stat.) ± 0.023(syst.)ps and [tau]B + = 1.629 ± 0.013(stat.) ± 0.025(syst.)ps.
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