B - SLAC
B - SLAC
B - SLAC
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Future Prospect: B�τν<br />
� Br(B�τν) measurement:<br />
More luminosity help to reduce both stat. and syst. errors.<br />
– Some of the syst. errors limited by statistics of the control sample.<br />
� |V ub| measurement: < 5% in future is an realistic goal.<br />
� f B from theory: ~10% now � 5% ?<br />
My assumption Δf B (LQCD) = 5% 5ab -1<br />
Lum. ΔB(B�τν) exp Δ|V ub |<br />
414 fb -1 36% 7.5%<br />
5 ab -1 10% 5.8%<br />
50 ab -1 3% 4.4%<br />
Br(B�τν)/Δm d to cancel f B ?<br />
G.Isidori&P.Paradisi, hep-ph/0605012<br />
If Δ|V ub | = 0 & Δf B = 0<br />
50ab -1<br />
15
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