Calculations of the Decay Constant and Radius of the Pion
WAN Shaolong1, ZHOU Jiange2, CHEN Qinghu1, WANG Kelin1
1Center for Fundamental Physics, University of Science and Technology of China, Hefei 230026
2CCAST (World Laboratory), P.O. Box 8730, Beijing 100080;
and Institute of High Energy Physics, Academia Sinica, Beijing 100039
Calculations of the Decay Constant and Radius of the Pion
WAN Shaolong1;ZHOU Jiange2;CHEN Qinghu1;WANG Kelin1
1Center for Fundamental Physics, University of Science and Technology of China, Hefei 230026
2CCAST (World Laboratory), P.O. Box 8730, Beijing 100080;
and Institute of High Energy Physics, Academia Sinica, Beijing 100039
Abstract： We calculated the decay constant and radius of the pion in the framework of the Bethe-Salpeter equation with the vector-vector-type flat-bottom potential. The calculated results, fπ =102MeV and < rπ2>1/2 =0.632fm, are close to experimental values of fπ = 93 MeV and < rπ2>1/2 = 0.663± 0.023fm.
WAN Shaolong;ZHOU Jiange;CHEN Qinghu;WANG Kelin. Calculations of the Decay Constant and Radius of the Pion[J]. 中国物理快报, 1995, 12(3): 140-143.
WAN Shaolong, ZHOU Jiange, CHEN Qinghu, WANG Kelin. Calculations of the Decay Constant and Radius of the Pion. Chin. Phys. Lett., 1995, 12(3): 140-143.
1995, Vol. 12 
