The Full Range of Predictions for B Physics From Iso-singlet Down Quark Mixing

Details The Full Range of Predictions for B Physics From Iso-singlet Down Quark Mixing The Full Range of Predictions for B Physics From Iso-singlet Down Quark Mixing

1998-06-26

arxiv.org/abs/hep-ph/9806489v1

Phys.Rev.D58:095006,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages in RevTeX, 7 postscript figures

Scientific paper

10.1103/PhysRevD.58.095006

We extend the range of predictions of the isosinglet (or vector) down quark model to the fully allowed physical ranges, and also update this with the effect of new physics constraints. We constrain the present allowed ranges of sin(2*beta) and sin(2*alpha), gamma, x_s, and A_{B_s}. In models allowing mixing to a new isosinglet down quark (as in E_6) flavor changing neutral currents are induced that allow a Z^0 mediated contribution to B-Bbar mixing and which bring in new phases. In (rho, eta), (x_s, sin(gamma)), and (x_s, A_{B_s}) plots for the extra isosinglet down quark model which are herein extended to the full physical range, we find new allowed regions that will require experiments on sin(gamma) and/or x_s to verify or to rule out an extra down quark contribution.

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