Measurement of the Ds lifetime

Aaij, R. et al. (2014) Measurement of the B ̄s0 meson lifetime in Ds+π−

Measurement of the T Lifetime

2. Method. Tau leptons are pair-produced in e+eannihilations, so each tau has the known beam energy. Thus we can measure the lifetime by determining the average decay length of the taus; at PEP energies, Ec, =29 GeV, it is expected to be about 700 p. The decay length can be measured when the tau decays in the three-chargedprong topology. It is simply the distance between the production point, i...

Measurement of the D(s)+ lifetime.

A high statistics measurement of the D(s)+ lifetime from the Fermilab fixed-target FOCUS photoproduction experiment is presented. We describe the analysis of the two decay modes, D(s)+ --> phi(1020)pi+ and D(s)+ -->K*(892)0K+, used for the measurement. The measured lifetime is 507.4 +/- 5.5(stat) +/- 5.1(syst) fs using 8961 +/- 105 D(s)+ --> phi(1020)pi+ and 4680 +/- 90 D(s)+ --> K*(892)0K+ dec...

Measurement of the tau lifetime at SLD.

We present an updated measurement of the tau lifetime at SLD. 4316-pair events, selected from a 150k Z 0 data sample, are analyzed using three techniques: decay length, impact parameter, and impact parameter diierence methods. The measurement beneets from the small and stable interaction region at the SLC and the precision CCD pixel vertex detector of the SLD. The combined result is: = 288:1 6:...

Customer Lifetime Value Measurement

T measurement of customer lifetime value is important because it is used as a metric in evaluating decisions in the context of customer relationship management. For a firm, it is important to form some expectations as to the lifetime value of each customer at the time a customer starts doing business with the firm, and at each purchase by the customer. In this paper, we use a hierarchical Bayes...