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WG I:  Precise Determination of Vud and Vus


Conveners: Exp.:  M. Antonelli


Theory:  A. Juettner, V. Cirigliano
  • Determination of Vus
    • from Kl3 decays: new Kl3 results, measurement and analysis of Kl3 Dalitz plot to constrain CHPT parameters, new lattice results and their errors
    • from τ and hyperon decays: estimate of theoretical errors, prospects
    • from fK / fπ : new lattice results, exhaustive estimate of unquenched lattice uncertainty

  • Determination of Vud from super-allowed Fermi transitions, neutron and pion decays: theoretical and experimental updates, also new ideas
WG II:  Determination of Vub,Vcb, Vcs through Inclusive / Exclusive Semileptonic B and D decays

Conveners: Exp.:  R. Kowalewski


Theory:  A. Kronfeld, M. Neubert
  • Determination of Vcb and HQE parameters from inclusive B ->Xlν decay
    • Theoretical uncertainties: prospects
    • Spectral moments: new results, averages, global fits, scheme differences, determination of quark masses and hadronic parameters and their combination

  • Determination of Vub inclusive.
    • New measurements of Elepton , MX , q2 spectrum.
    • Several methods to determine |Vub| from the measured rate
    • Associated theoretical errors. Weak annhilation effect
    • How to make the average etc.
    Note: b--> s gamma measurements will be discusseedin WG III in a session prior to this one

  • Determination of Vcb exclusive: theoretical and experimental update
    • New measurements for the form factors
    • F(1) lattice unquenched calculation, LCSR

  • Determination of Vub exclusive: theoretical and experimental update
    • New measurements of the q2 distribution with differenct tagging methods
    • Experimental determination of the form factor shape
    • Form factor normalization from unquenched lattice, LCSR and others

  • Exclusive and inclusive D semileptonic decays, determination of Vcs and of form factors

  • D -->πlν, extrapolation from D to B and possible determination of Vub
WG III:  Rare B, D  and K Decays

Conveners: Exp.:  U. Egede, M. Nakao


Theory:  U. Haisch
  • Vtd/Vts from B --> ργ and B --> K*γ and (semi-)inclusive b-->d/s gamma
    • New results from experiments
    • Results from lattice, LCSR, prospects, long distance contributions

  • Radiative decays as probe of CKM and of new physics.
    • Theoretical and experimental updates of B --> Xs γ
    • Use of b -->sγ for moments and for Vub (discussion in conjunction with WG2)
    • Bs radiative decays?

  • Role of the radiative charm decays

  • Purely letponic decays of Bd(s) as probe of CKM and of new physics

  • b-->s/d ll

  • Rare K decays of relevance to CKM studies
WG IV:  Lifetimes, mixing and the corresponding phases

Conveners: Exp.:  I. Furic


Theory:  C. Tarantino
  • εK, ΔMd, ΔMs
    • Lattice determination and experimental constraints on fBd , fBs and ξ
    • Critical review on quenching and chiral logs associated errors

  • Measurement of Ds/D+ --> τ(μ)ν
    • Determination of fDs, fD+ and their ratio
    • Possible extrapolation to fB and ξ

  • B hadron widths and differences: theoretical and experimental update

  • Measurement of weak phases in B(s,d) decays to Charmonium
    • Measurements of φ1 (β) and cos2φ1 (cos2β)
    • CPT/T parameters
    • Measurements of φs
WG V:  gamma (phi_3) and related measurements

Conveners: Exp.:  A. Bondar


Theory:  A. Soni
  • Measurements of φ3 (γ) in B--> D(*)K(*) decays
    • GLW and ADS methods
    • Dalitz methods (model dependent/independent)
    • related B --> charm measurements needed for input parameter/further studies

  • Measurements of 2φ1 + φ3 (2β + γ) in B --> D(*)π,ρ decays and related BF measurements (Dsπ, Dπ0, and D(*)K(*))
WG VI:  Angles from penguin dominated B(s,d) decays

Conveners Exp.:  T. Gershon


Theory:  L. Silvestrini, Th. Feldmann
  • φ2 (α) modes: two body decays (ππ), quasi-two-body (Q2B) Bdecays (ρρ, ρπ) and Dalitz analysis (πππ)
    • New results? New modes?
    • How can we get to φ2 (α) from the different measurements? How good is the Q2B approximation? How important are S-wave contribution (and other interference) in modes involving ρ?
    • How trustable are theoretical calculations of the penguin pollution?

  • φ1 (β) modes: φK0, η'K0, f0K0, π0Ks, K+K-Ks, KsKsK0 and more
    • New results? New modes?
    • Possible deviation from sin2φ1 (sin2β) within the SM ? What are the methods one can use to calculate them and how these methods can be checked?
    • Can the sign of the deviation be obtained?
    • Are there correlations between the deviation in these modes ? Are there observables or combinations of observables that have smaller SM uncertainties (sums, ratios etc.)?

  • φ3 from charmless decays. Interpretation of other charmless decays
    • Understanding of the πK modes (γ, electroweak penguins)
    • What can be learnt in addition from πK* and ρK* modes?

  • Comparison and assessment of theoretical approaches based on factorization and/or flavor symmetries
    • What are the theoretical assumptions?
    • Which amplitudes are included in the calculations, and what is the estimated theoretical error?
    • Perform comparative studies for "benchmark" modes
    • How predictive are data-driven fits?

ckm2008@roma1.infn.it --- ckm2008.roma1.infn.it