Solution to the B ---> pi K puzzle in a flavor-changing Z-prime model
Journal
Physics Letters
Journal Volume
B598
Pages
218-226
Date Issued
2004-06
Author(s)
Abstract
Recent experiments suggest that certain B→πK branching ratios are inconsistent with the standard model expectations. We show that a flavor-changing Z′ provides a solution to the problem. Electroweak penguin amplitudes are enhanced by the Z′ boson for select parameters. We discuss implications for the Z′ mass and its couplings to the standard model fermions. We also show that the solution is consistent with constraints from the CP asymmetries of the B→φKS decay. © 2004 Published by Elsevier B.V.
Type
journal article