WG3
Session 1
March 15, 2:20pm-4:30pm (Ballroom A) Vtd and Vts
chair: Christoph Paus, MIT
Rare K decays and Bs mixing at CDF/D0
2:20-2:35 (Th) Rare kaon decays and implications for the unitarity triangle Gerhard Buchalla pdf
2:45-3:00 (Exp) K → πνν, K → πl+l- and other rare kaon decays David Jaffe pdf
3:10-3:40 (Exp) First Bs mixing results from CDF Ivan Furic pdf
3:50-4:20 (Exp) ΔΓss and first Bs mixing results
from D0
Brad Abbott pdf

Rare K decays and Bs mixing at CDF/D0:

  1. How reliably can information on Vtd and V*ts be extracted from rare Kaon decays?
  2. What measurements and calculations can be done to improve such extractions?
  3. The K± → π±νν decay:
    • How many events are needed to make the experimental uncertainties equal to the current theoretical ones?
    • What are the prospects for improving the measurement?
    • What is the expected precision in the branching fraction today/in 2005/in 2007/for future experiments?
    • Does this precision rival that of Vtd constraints from B(Bs) mixing or B radiative penguin decays?
    • Is it worth trying to improve theory for this decay mode?
  4. The K0 → π0νν decay:
    • In what calendar year and to what precision might we expect the first observation of this decay?
    • What are the prospects for the progress afterwards?
  5. The K0L → π0l+l- decay:
    • How close are we to measuring the branching ratio?
    • Is the direct CP-violating contribution a clean observable?
    • Are the current experimental data sufficient to control the CP-conserving contribution?
    • Do we have control over the interference between the direct and indirect CP-violating contributions?
  6. New results on ΔMs from the TeVatron:
  7. What is the impact of the new ΔMs results on the CKM fits?