CKM Matrix Status

W ?cs

l

n

B

p

eig

1

l

l

n

D

p

l

n

D

K

l

B

n

D

1

Bd

Bd

Bs

Bs

?Vud/Vud 0.1%

?Vus/Vus =1%

?Vub/Vub 25%

?Vcd/Vcd 7%

?Vcs/Vcs =11%

?Vcb/Vcb 5%

?Vtd/Vtd =36%

?Vts/Vts 39%

?Vtb/Vtb 29%

n

?

K

l

Vud, Vus and Vcd are the best determined due to flavor symmetries: I, SU(3), HQS. Charm and the rest of the beauty sector are poorly determined. Theoretical error on hadronic matrix elements dominate.

e

n

p

n

Free/bound

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