Constraining Scalar Leptoquarks from the K and B Sectors
Abstract
Upper bounds at the weak scale are obtained for all λijλim type product couplings of the scalar leptoquark model which may affect K-K(bar), Bd-Bd(bar), and Bs-Bs(bar)$ mixing, as well as leptonic and semileptonic K and B decays. Constraints are obtained for both real and imaginary parts of the couplings. We also discuss the role of leptoquarks in explaining the anomalously large CP-violating phase in Bs-Bs(bar) mixing.
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