1. line shape of ee->KK

2. formula

3. with 1 resonance higher than 2 GeV
chi2 is
bes chi2 is
bar13 chi2 is
bar15 chi2 is

4. with 2 resonance higher than 2 GeV
chi2 is
bes chi2 is
bar13 chi2 is
bar15 chi2 is

5. with 3 resonance higher than 2 GeV
chi2 is
bes chi2 is
bar13 chi2 is
bar15 chi2 is

6. with out phi @2.23 chi2 is 718.114 bes chi2 is 523.892
bar13 chi2 is
bar15 chi2 is

7. 2230 with width running as rho
chi2 is
bes chi2 is
bar13 chi2 is
bar15 chi2 is

8. PDG quoted uncertainty
1 Constant e e+00
2 Mean
3 Sigma
1 Constant e e+00
2 Mean
3 Sigma

9. PDG quoted uncertainty

10. check chisq Vs m

11. change M_Rs Γ_Rs to result near m=2.25

12. varied M and Γ, chi curve

13. 2220 Vs 2250

14. pole position Vs BW parameters
Concept of pole position: the pole position is simply the complex zero of the
denominator, and the Breit-Wigner mass is the renormalized mass of a resonance defined as the real energy at which the real part of the denominator vanishes. [From “Fundamental properties of resonances”]
our case:
BW parameters are m and Γ, which can be obtained from the fit to data.
Pole position is the solution of
Thus,

15. Two solutions? energy-dependent width fixed width chisq = 157.427
c= e e-03
m= e e-03
w= e e-02
e e-02
e e-03
e e-02