Fit the BES mass of psi(3770) 3.770

Introduction

Compare with the regular fit of 3.774 GeV, we use 3.770 GeV.

Process

We fit the psi(3770) with mass 3.770 GeV¹. Compare with our regular fits which has mass of 3.774 GeV and width 27.5 GeV. The "diff(%)" is calculated by²:

     /   Yields( test  )         \
    |  --------------------  - 1  |  X 100
     \   Yields(regular)         /

Mode	data diff(%)
D0 &rarr K- &pi+	0.86
D 0&rarr K+ &pi-	0.84
D0 &rarr K- &pi+ &pi0	1.76
D 0&rarr K+ &pi- &pi0	1.82
D0 &rarr K- &pi+ &pi- &pi+	1.82
D 0&rarr K+ &pi- &pi+ &pi-	1.80
D+ &rarr K- &pi+ &pi+	1.06
D- &rarr K+ &pi- &pi-	1.08
D+ &rarr K- &pi+ &pi+ &pi0	1.84
D- &rarr K+ &pi- &pi- &pi0	1.84
D+ &rarr KS0 &pi+	1.38
D- &rarr KS0&pi-	1.26
D+ &rarr KS0 &pi+ &pi0	1.81
D- &rarr KS0&pi- &pi0	1.73
D+ &rarr KS0 &pi+ &pi+ &pi-	2.30
D- &rarr KS0&pi- &pi- &pi+	2.40
D+ &rarr K+ K- &pi+	2.16
D- &rarr K- K+ &pi-	2.11

Conclusion

The largest difference is 2.40%.

---

1. Fitting plots can be found here.

2. More about this table see here.