Model Independent Methods for Determining B(Y(5S)->Bs^{()} anti-B}_s^{()})$

preprint2009arXivOpen access

We describe a method that provides a model independent measurement of the Bs fraction in Y(5S) resonance decays, fs, using the relative rates of like-sign versus opposite sign dileptons; the like-sign leptons result from B^0 and Bs mixing. In addition, we show that determining the rates of single, double and triple Ds mesons provides an alternative way of finding fs.

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Model Independent Methods for Determining B(Y(5S)->Bs^{()} anti-B}_s^{()})$

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Model Independent Methods for Determining B(Y(5S)->Bs^{(*)} anti-B}_s^{(*)})$

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Model Independent Methods for Determining B(Y(5S)->Bs^{()} anti-B}_s^{()})$