Why B _Xln is interesting
• Only one diagram contributes.
• G _ |Vcb|2 for final states with charm
• G _ |Vub|2 for final states without charm.
a
b
g
|VtdV*tb|
|VcdV*cb|
|VudV*ub|
B_YKs
BB mixing B_rg
b_cln
b_uln
B_pp,Kp
B_ p+p- r+p-
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