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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IFR Per<strong>for</strong>mance<br />
Efficiencies <strong>for</strong> muons (e + e − µ + µ − ) and pions (τ and K S decays)<br />
eff.<br />
1<br />
0.8<br />
<strong>BABAR</strong> IFR Barrel<br />
0.6<br />
0.4<br />
muons from eeµµ<br />
pions from τ-3prong and Ks<br />
0.2<br />
0<br />
0 1 2 3 4<br />
p (GeV/c)<br />
>75% efficiency with ~3% π mis-id. probability.<br />
<strong>First</strong> <strong>Year</strong> <strong>of</strong> BaBar/<strong>PEP</strong>-<strong>II</strong> Masahiro Morii SLAC