Abstract
We study the effects of an extra U(1)′ gauge boson with flavor changing couplings with fermion mass eigenstates on certain B meson decays that are sensitive to such new physics contributions. In particular, we examine to what extent the current data on Bd → φK and Bd → η′K decays may be explained in such models, concentrating on the example in which the flavor changing couplings are left-chiral. We find that within reasonable ranges of parameters, the Z′ contribution can readily account for the anomaly in SφKS but is not sufficient to explain large branching ratio of Bd → η′K with the same parameter value. SφKS and Sη′KS are seen to be the dominant observables that constrain the extra weak phase in the model.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 186-196 |
| Number of pages | 11 |
| Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Volume | 580 |
| Issue number | 3-4 |
| DOIs | |
| State | Published - Feb 5 2004 |
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
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Barger, V., Chiang, C. W., Langacker, P., & Lee, H. S. (2004). Z′ mediated flavor changing neutral currents in B meson decays. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 580(3-4), 186-196. https://doi.org/10.1016/j.physletb.2003.11.057