Year: 1999
Type: article
Abstract: The contribution of a ${K}^{*}(1430)$ ${0}^{+}$ resonance to ${D}^{0}\ensuremath{\rightarrow}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$ is calculated by applying the soft pion theorem to ${D}^{+}\ensuremath{\rightarrow}{K}^{*}{\ensuremath{\pi}}^{+}$, and is found to be about $30%$ of the measured amplitude and to be larger than the $\ensuremath{\Delta}I\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}3/2$ component of this amplitude. We estimate a $70%$ contribution to the total amplitude from a higher ${K}^{*}(1950)$ resonance. This implies large deviations from factorization in $D$ decay amplitudes, a lifetime difference between ${D}^{0}$ and ${D}^{+}$, and an enhancement of ${D}^{0}--{\overline{D}}^{0}$ mixing due to SU(3) breaking.
Source: Physical Review Letters
Author: Michael Gronau
Institutions: SLAC National Accelerator Laboratory, Stanford University
Language: Latvian
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2018019804