Year: 2001
Type: article
Abstract: We calculate the contributions of the vectorlike quark model to ${B}_{s}{B}_{s}$ mixing, taking into account the constraints from the decay $\stackrel{\ensuremath{\rightarrow}}{B}{X}_{s}\ensuremath{\gamma}.$ In this model the neutral bosons mediate flavor-changing interactions at the tree level. However, ${B}_{s}{B}_{s}$ mixing is dominated by contributions from the box diagrams with the top quark and the extra up-type quark. In sizable ranges of the model parameters, the mixing parameter ${x}_{s}$ is much different from the standard model prediction.
Language: Latvian
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2044819673