Analysis of K{sup +}{yields}e{sup +}{nu}{sub e}{gamma} in light-front quark model and chiral perturbation theory of order p{sup 6}
- Department of Physics, National Cheng-Kung University, Tainan 701, Taiwan (China)
- Department of Physics, National Tsing-Hua University, Hsinchu 300, Taiwan (China)
- General Education Center, Tzu-Chi College of Technology, Hualien 970, Taiwan (China)
Within the frameworks of the light-front quark model (LFQM) and chiral perturbation theory (ChPT) of O(p{sup 6}), we reevaluate the form factors of the K{sup +}{yields}{gamma} transition. We use these form factors to study the decay of K{sup +}{yields}e{sup +}{nu}{sub e}{gamma}, which is dominated by the structure-dependent contribution. We show the differential decay branching ratio as a function of x=2E{sub {gamma}}/m{sub K}, where E{sub {gamma}}(m{sub K}) is the photon energy (kaon mass). Explicitly, we find that, in the standard model with the cut of x=0.01 (0.1), the decay branching ratio of K{sup +}{yields}e{sup +}{nu}{sub e}{gamma} is 1.54(1.44)x10{sup -5} and 1.57(1.47)x10{sup -5} in the LFQM and ChPT, respectively.
- OSTI ID:
- 21035687
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 77, Issue 1; Other Information: DOI: 10.1103/PhysRevD.77.014004; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
Similar Records
Analysis of the D{sup +}{yields}K{sup -}{pi}{sup +}e{sup +}{nu}{sub e} decay channel
Study of the decay D{sub s}{sup +}{yields}K{sup +}K{sup -}e{sup +}{nu}{sub e}