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pubmed:abstractText |
Using 467??fb(-1) of e+e- annihilation data collected with the BABAR detector, we measure (B(?- ? ?- ?(?) ?(?)))/(B(?- ? e- ?(e) ?(?))) =(0.9796±0.0016±0.0036), (B(?- ? ?- ?(?)))/(B(?- ? e- ?(e) ?(?))) = (0.5945±0.0014±0.0061), and (B(?- ? K- ?(?)))/(B(?- ? e- ?(e) ?(?))) = (0.03882±0.00032±0.00057), where the uncertainties are statistical and systematic, respectively. From these precision ? measurements, we test the standard model assumption of ?-e and ?-? charge current lepton universality and provide determinations of |Vus| experimentally independent of the decay of a kaon.
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