20.1 Mass

E1(p=0)=M+P[1]eMLML P[0]=M

χ2/d.o.f.=1.87384P[0]=0.271209±(2.6e05)P[1]=0.34814±(0.19) {C=(6.6e100.8510.8510.035)}

1416182022242628300.2710.27120.27140.27160.27180.2720.27220.27240.27260.2728
$L$$E_1(\vec p=0)$