e+ e- -> pi+ pi- psip (neutral channle) Line shape measurement

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Presentation transcript:

e+ e- -> pi+ pi- psip (neutral channle) Line shape measurement Liang Yan

Efficiency Ecms Efficiency 4190 0.32 4210 0.33 4220 4230 4245 4260 0.28 4310 4360 0.36 4390 0.37 4420 0.38

Efficiency (4190) Decay modes Efficiency Br Weight Psip->pi0 pi0 Jpsi 0.34 17.33 0.700 Psip->pi0 Jpsi 0.20 0.13 0.005 Psip-> eta Jpsi 0.31 2.32 0.094 Psip -> gamma chic0, Chic0-> gamma jpsi 0.26 0.11 0.004 Psip -> gamma chic1, Chic1-> gamma jpsi 0.27 3.16 0.128 Psip -> gamma chic2, Chic2-> gamma jpsi 1.7 0.069 Total 0.32 24.75 1.000

Efficiency (4210) Decay modes Efficiency Br Weight Psip->pi0 pi0 Jpsi 0.34 17.33 0.700 Psip->pi0 Jpsi 0.21 0.13 0.005 Psip-> eta Jpsi 0.32 2.32 0.094 Psip -> gamma chic0, Chic0-> gamma jpsi 0.27 0.11 0.004 Psip -> gamma chic1, Chic1-> gamma jpsi 0.28 3.16 0.128 Psip -> gamma chic2, Chic2-> gamma jpsi 1.7 0.069 Total 0.33 24.75 1.000

Efficiency (4220) Decay modes Efficiency Br Weight Psip->pi0 pi0 Jpsi 0.35 17.33 0.700 Psip->pi0 Jpsi 0.21 0.13 0.005 Psip-> eta Jpsi 0.33 2.32 0.094 Psip -> gamma chic0, Chic0-> gamma jpsi 0.27 0.11 0.004 Psip -> gamma chic1, Chic1-> gamma jpsi 0.28 3.16 0.128 Psip -> gamma chic2, Chic2-> gamma jpsi 1.7 0.069 Total 24.75 1.000

Efficiency (4230) Decay modes Efficiency Br Weight Psip->pi0 pi0 Jpsi 0.35 17.33 0.700 Psip->pi0 Jpsi 0.20 0.13 0.005 Psip-> eta Jpsi 0.33 2.32 0.094 Psip -> gamma chic0, Chic0-> gamma jpsi 0.26 0.11 0.004 Psip -> gamma chic1, Chic1-> gamma jpsi 0.27 3.16 0.128 Psip -> gamma chic2, Chic2-> gamma jpsi 1.7 0.069 Total 24.75 1.000

Efficiency (4245) Decay modes Efficiency Br Weight Psip->pi0 pi0 Jpsi 0.34 17.33 0.700 Psip->pi0 Jpsi 0.19 0.13 0.005 Psip-> eta Jpsi 0.33 2.32 0.094 Psip -> gamma chic0, Chic0-> gamma jpsi 0.25 0.11 0.004 Psip -> gamma chic1, Chic1-> gamma jpsi 0.26 3.16 0.128 Psip -> gamma chic2, Chic2-> gamma jpsi 0.24 1.7 0.069 Total 0.32 24.75 1.000

Efficiency (4260) Decay modes Efficiency Br Weight Psip->pi0 pi0 Jpsi 0.29 17.33 0.700 Psip->pi0 Jpsi 0.19 0.13 0.005 Psip-> eta Jpsi 0.27 2.32 0.094 Psip -> gamma chic0, Chic0-> gamma jpsi 0.23 0.11 0.004 Psip -> gamma chic1, Chic1-> gamma jpsi 0.24 3.16 0.128 Psip -> gamma chic2, Chic2-> gamma jpsi 1.7 0.069 Total 0.28 24.75 1.000

Efficiency (4310) Decay modes Efficiency Br Weight Psip->pi0 pi0 Jpsi 0.34 17.33 0.700 Psip->pi0 Jpsi 0.20 0.13 0.005 Psip-> eta Jpsi 0.33 2.32 0.094 Psip -> gamma chic0, Chic0-> gamma jpsi 0.26 0.11 0.004 Psip -> gamma chic1, Chic1-> gamma jpsi 0.27 3.16 0.128 Psip -> gamma chic2, Chic2-> gamma jpsi 1.7 0.069 Total 0.32 24.75 1.000

Efficiency (4360) Decay modes Efficiency Br Weight Psip->pi0 pi0 Jpsi 0.38 17.33 0.700 Psip->pi0 Jpsi 0.23 0.13 0.005 Psip-> eta Jpsi 0.36 2.32 0.094 Psip -> gamma chic0, Chic0-> gamma jpsi 0.29 0.11 0.004 Psip -> gamma chic1, Chic1-> gamma jpsi 0.31 3.16 0.128 Psip -> gamma chic2, Chic2-> gamma jpsi 0.30 1.7 0.069 Total 24.75 1.000

Efficiency (4390) Decay modes Efficiency Br Weight Psip->pi0 pi0 Jpsi 0.39 17.33 0.700 Psip->pi0 Jpsi 0.24 0.13 0.005 Psip-> eta Jpsi 0.36 2.32 0.094 Psip -> gamma chic0, Chic0-> gamma jpsi 0.30 0.11 0.004 Psip -> gamma chic1, Chic1-> gamma jpsi 0.31 3.16 0.128 Psip -> gamma chic2, Chic2-> gamma jpsi 1.7 0.069 Total 0.37 24.75 1.000

Efficiency (4420) Decay modes Efficiency Br Weight Psip->pi0 pi0 Jpsi 0.40 17.33 0.700 Psip->pi0 Jpsi 0.25 0.13 0.005 Psip-> eta Jpsi 0.37 2.32 0.094 Psip -> gamma chic0, Chic0-> gamma jpsi 0.31 0.11 0.004 Psip -> gamma chic1, Chic1-> gamma jpsi 0.32 3.16 0.128 Psip -> gamma chic2, Chic2-> gamma jpsi 1.7 0.069 Total 0.38 24.75 1.000

Lineshape Ecms Efficiency Luminosity (pb-1) Nobs X section (pb) 4190 0.32 42 5.2 (upper limit) 13.14 4210 0.33 52 6.2 ± 2.7 12.30±5.36 4220 7.4 ± 2.9 14.68±5.75 4230 1054 126.7 ± 13.4 12.40±1.31 4245 53 8.3 ± 3.0 16.66±6.02 4260 0.28 806 64.4 ± 9.6 9.71±1.45 4310 44 11.8 ± 3.7 28.53±8.94 4360 0.36 523 226.6 ± 16.6 40.96±3.00 4390 0.37 18.4 ± 4.6 31.94±7.98 4420 0.38 43 20.1 ± 4.6 41.87±9.58

Psi’ fitting (4190) Nupperlimit = 5.2

Psi’ fitting (4210) N = 6.2 ± 2.7

Psi’ fitting (4220) N = 7.4 ± 2.9

Psi’ fitting (4230) N = 126.7 ± 13.4

Psi’ fitting (4245) N = 8.3 ± 3.0

Psi’ fitting (4260) N = 64.4 ± 9.6

Psi’ fitting (4310) N = 11.8 ± 3.7

Psi’ fitting (4360) N = 226.6 ± 16.6

Psi’ fitting (4390) N = 18.4 ± 4.6

Psi’ fitting (4420) N = 20.1 ± 4.6

4230 4260