Measurement of |V_us| using hadronic tau decays from BaBar & Belle
classification
✦ hep-ex
keywords
babarbelledecayshadronicasymmetric-energybranchingcabibbo-kobayashi-maskawacenter-of-mass
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We report on measurements of branching fractions for several hadronic tau decays to final states with kaons, which can be used to determine the strange quark mass and the element |V_us| of the Cabibbo-Kobayashi-Maskawa quark-mixing matrix. The results are obtained from data collected with the BaBar and Belle detectors at the PEP-II and KEKB asymmetric-energy e+e- colliders at SLAC and KEK, respectively, both operating at center-of-mass energies near the Y(4S) resonance.
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