Study ofe+e- to Lambda anti-Lambda, Lambda anti-Sigma^0,Sigma^0 anti-Sigma^0 using Initial State Radiation with BaBar Page: 24 of 24

                                
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TABLE X: The AZ0 invariant mass interval (MAr), net number of signal events (NS), detection efficiency (e), ISR luminosity
(L), measured cross section (a), and effective form factor (F) for e+e--  Z0_ 0. The quoted errors on o- are statistical and
systematic. For the form factor, the total error is listed.
MA5               Nc                                   L                 a                   F
(GeV/c2)                                               (pb-1)            (pb)
2.308 2.400        9.44.6          0.035 + 0.004         5.70           47+1 + 5          0.102+0023
2.400 2.500        8.7+4.1         0.041 + 0.004         6.52           321 + 4           0.068+8
2.500 2.700        4.2+48          0.042 + 0.004        14.02          7.1 s + 0.7        0.029%8
2.700 2.900        1.8+2           0.041 + 0.004        15.38          2.9+43 + 0.3        0.018+001
2.900 3.300         < 9.0          0.040 + 0.004        25.78             < 8.7              < 0.033
3.300 3.500         < 5.3          0.041 + 0.005        29.28             < 4.5              < 0.025
3.500 3.800         < 5.1          0.038 + 0.005        33.13             < 4.1              < 0.026
3.800 5.000         < 3.5          0.034 + 0.004        180.38            < 0.6              < 0.011

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