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BaBar Analysis Update: Future Plans for GLW Method

Updating BaBar analysis with Run5 and part of Run6 dataset to measure charge asymmetries and decay branching fractions using the GLW method. Analysis in progress, using last year's data for ntuple reduction.

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BaBar Analysis Update: Future Plans for GLW Method

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  1. B->D0K GLW plans Outline: Analysis method Reminder Status Future plans Valentina Santoro, Vitaly Eyges

  2. Color suppression CKM suppression 3 unknown rb , d, g Gronau Wyler London method The GLW method can access to g via interference between B+ -> D0K+ D0->f and B+ -> D0K+ D0->f . f is a final states accessible to both D0 and D0 Color allowed b->c transition Color suppressed b->u transition The CP eigenstates accessible to D0 and D0are: CP even: K+K- , p+p- CP odd: Ksp0 , Ksw , Ksf

  3. Reminder Last BaBar analysis published was based on a sample of 232 million Y(4S)->BB decays corresponding to an integrated luminosity of 211fb-1 using the full Run 1-4 dataset They measure: • the partial-rate charge asymmetries ACP± • the ratios RCP± of the B->D0K decay branching fractions • ACP+ = 0.35 ± 0.13(stat) ± 0.04(syst), • ACP− = −0.06 ± 0.13(stat) ± 0.04(syst), • RCP+ = 0.90 ± 0.12(stat) ± 0.04(syst), • RCP− = 0.86 ±0.10(stat) ± 0.05(syst). We are going to update the analysis with Run5 and part of Run6 dataset for next summer

  4. Analysis status The analysis is just started We are using the GLW/ADS skim and ntuples produced last year We are now working on the ntuple reduction

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