Measurement of |Vcs| with DELPHI experiment

Details Measurement of |Vcs| with DELPHI experiment Measurement of |Vcs| with DELPHI experiment

Oct 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aipc..444..306g&link_type=abstract

First tropical workshop on particle physics and cosmology and the second Latin American symposium on high energy physics. AIP C

Physics

High Energy Physics

Scientific paper

Pair production of charged weak bosons W+/- at LEP2 collider can be exploited to measure the absolute value of the Vcs element of Cabbibo-Kobayashi-Maskawa matrix. The value can be most accurately extracted from the measured hadronic branching ratio of W+/- bosons. An independent method to obtain the |Vcs| value consists of tagging the flavour of primary quarks in jets, produced in W+/- decays. Using both methods on the data collected with DELPHI experiment during 1996 and 1997 runs, we obtained |Vcs|=0.99+/-0.06(stat.)+/-0.04(syst.). Combined result of |Vcs| measurements with four LEP experiments enables a test of CKM matrix unitarity.

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