First Year of BABAR/PEP-II - Harvard University Laboratory for ...
First Year of BABAR/PEP-II - Harvard University Laboratory for ...
First Year of BABAR/PEP-II - Harvard University Laboratory for ...
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→ sss and dds Modes<br />
b<br />
B 0<br />
d<br />
s<br />
s<br />
s<br />
d<br />
φ,η'<br />
K 0 , K*<br />
b<br />
B 0<br />
d<br />
s<br />
d<br />
d<br />
d<br />
K 0 , K*<br />
π 0 ,ρ 0 ,ω<br />
Example: B 0 →φ K S , or φ K*<br />
* V td<br />
* V cb<br />
* V cs<br />
⎛<br />
λ (–<br />
1) V tb ⎞⎛V --------------- cs ⎞⎛V ⎜ ⎟ ---------------- cd ⎞<br />
=<br />
⎜ ⎟⎜----------------⎟<br />
* * *<br />
⎝V tb<br />
V td<br />
⎠⎝V cs<br />
V cb<br />
⎠⎝V cd<br />
V cs<br />
⎠<br />
A CP () t = sin2βsin( ∆m⋅<br />
t)<br />
B-mix Penguin K-mix<br />
How about the cleanliness?<br />
◆ B 0 →φ K S , or φ K* are pure penguin → OK.<br />
◆ B 0 → dds modes: the tree is both color- and Cabibbo-suppressed →<br />
Penguin probably dominates. Limitation: small branching ratios.<br />
<strong>First</strong> <strong>Year</strong> <strong>of</strong> BaBar/<strong>PEP</strong>-<strong>II</strong> Masahiro Morii SLAC
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