Numbers

no effi correction
e^{-}e^{-} Weighted Mean: 0.949624 Weighted Std Deviation: 0.139728
e^{+}e^{-} Weighted Mean: 1.0029 Weighted Std Deviation: 0.0673723
e^{+}e^{+} Weighted Mean: 1.07325 Weighted Std Deviation: 0.25845
comb. background Weighted Mean: 0.917809 Weighted Std Deviation: 0.125421
signal Weighted Mean: 1.06672 Weighted Std Deviation: 0.18148
after effi correction
e^{-}e^{-} Weighted Mean: 0.943452 Weighted Std Deviation: 0.16972
e^{+}e^{-} Weighted Mean: 0.963176 Weighted Std Deviation: 0.104567
e^{+}e^{+} Weighted Mean: 1.08558 Weighted Std Deviation: 0.349078
comb. background Weighted Mean: 0.87838 Weighted Std Deviation: 0.144188
signal Weighted Mean: 1.07471 Weighted Std Deviation: 6.52219

Numbers after mom cut

no effi correction
e^{-}e^{-} Weighted Mean: 1.11278 Weighted Std Deviation: 0.188239
e^{+}e^{-} Weighted Mean: 1.12183 Weighted Std Deviation: 0.0830843
e^{+}e^{+} Weighted Mean: 1.02828 Weighted Std Deviation: 0.386347
comb. background Weighted Mean: 1.02309 Weighted Std Deviation: 0.210302
signal Weighted Mean: 1.31849 Weighted Std Deviation: 0.301839

after effi correction
e^{-}e^{-} Weighted Mean: 1.04959 Weighted Std Deviation: 0.20617
e^{+}e^{-} Weighted Mean: 1.04151 Weighted Std Deviation: 0.0886309
e^{+}e^{+} Weighted Mean: 1.31316 Weighted Std Deviation: 0.56912
comb. background Weighted Mean: 1.06575 Weighted Std Deviation: 0.240999
signal Weighted Mean: 1.1614 Weighted Std Deviation: 0.708875

No momentum Cut

no efficiency correction

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efficiency correction

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Momentum Cut

no efficiency correction

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efficiency correction

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true spectra (asking for commontrack >=76 plus correct pair)

not efficiency corrected

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efficiency corrected

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-- YvonnePachmayer - 04 Oct 2007