Measurement of |V{sub cs}| with DELPHI experiment

Journal Article · Mon Oct 19 00:00:00 EDT 1998 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.56614· OSTI ID:21202143

Golob, Bostjan ^[1]

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1. Faculty of Mathematics and Physics, University of Ljubljana, SI-1000, Ljubljana, Slovenia, (Slovenia)

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

• OSTI ID: 21202143
• Journal Information: AIP Conference Proceedings, Vol. 444, Issue 1; Conference: 1. tropical workshop on particle physics and cosmology; 2. Latin American symposium on high energy physics, San Juan (Puerto Rico), 1-11 Apr 1998; Other Information: DOI: 10.1063/1.56614; (c) 1998 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANCHING RATIO
CP INVARIANCE
ELECTRON-POSITRON INTERACTIONS
FLAVOR MODEL
HADRONS
JET MODEL
KOBAYASHI-MASKAWA MATRIX
LEP STORAGE RINGS
MASS DIFFERENCE
PAIR PRODUCTION
PARTICLE DECAY
QUARKS
UNITARITY
W MINUS BOSONS
W PLUS BOSONS