Measurement of $\mid V_{cs} \mid$ using W decays at LEP2

Abstract : Decays of $W^{\pm}$ bosons, produced at LEP2, have been used to measure the $|V_{cs}|$ element of the Cabibbo-Kobayashi-Maskawa matrix. Values for $|V_{cs}|$ were extracted both from the measured hadronic branching ratio of $W^{\pm}$ decays and by tagging the flavour of hadronic jets produced in $W^{\pm}$ decays. Applying the two methods to the data collected during 1996 at energies of 161 and 172 GeV, DELPHI obtains $|V_{cs}| = 0.91{+0.15 \atop -0.14}({\rm stat})\pm 0.05({\rm syst})$.
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http://hal.in2p3.fr/in2p3-00003430
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Submitted on : Monday, November 16, 1998 - 9:55:04 AM
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• HAL Id : in2p3-00003430, version 1

Citation

P. Abreu, W. Adam, T. Adye, P. Adzic, I. Ajinenko, et al.. Measurement of $\mid V_{cs} \mid$ using W decays at LEP2. Physics Letters B, Elsevier, 1998, 439, pp.209-224. ⟨in2p3-00003430⟩

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