Analysis of $K^+ \to e^+ ν_{e}γ$ in light-front quark model and chiral perturbation theory of order $p^6$
| dc.creator | Chen, Chuan-Hung | |
| dc.creator | Geng, Chao-Qiang | |
| dc.creator | Lih, Chong-Chung | |
| dc.date | 2007-10-16 | |
| dc.date | 2007-12-08 | |
| dc.date.accessioned | 2026-07-07T11:12:16Z | |
| dc.date.available | 2026-07-07T11:12:16Z | |
| dc.description | Within the frameworks of the light-front quark model (LFQM) and chiral perturbation theory (ChPT) of $O(p^6)$, we reevaluate the form factors of the $K^+ \to γ$ transition. We use these form factors to study the decay of $K^+ \to e^+ ν_{e}γ$, which is dominated by the structure dependent contribution. We show the differential decay branching ratio as a function of $x=2E_γ/m_K$, where $E_γ$ ($m_K$) 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 $K^+ \to e^+ ν_{e}γ$ is $1.54 (1.44)\times 10^{-5}$ and $1.57 (1.47)\times 10^{-5}$ in the LFQM and ChPT, respectively. | |
| dc.description | 15 pages, 4 figures, final version to be published in PRD | |
| dc.identifier | https://arxiv.org/abs/0710.2971 | |
| dc.identifier | http://arxiv.org/abs/0710.2971 | |
| dc.identifier | Phys.Rev.D77:014004,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.77.014004 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/191325 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Analysis of $K^+ \to e^+ ν_{e}γ$ in light-front quark model and chiral perturbation theory of order $p^6$ | |
| dc.type | text |