Constraints on heavy Z' couplings from ΔS = 2 B^- -> K^- K^- π^+ decay

Abstract

The heavy Z' boson with family nonuniversal couplings can introduce flavour changing effects. Constraints on nondiagonal Z' couplings coming from the μ-e conversion in a muonic atom, K^0 - \bar{K^0} and B - \bar{B} mixing, epsilon and epsilon'/ εCP- violating coefficients have been already established. By using the OPAL upper bound of the branching ratio for the B^- -> K^- K^- π^+ decay, we indicate additional constraints on the Z' couplings. We comment also on the constraints of Z' couplings coming from the b->d d \bar{s} transition. The constraint obtained here from the upper bound of the B^- -> K^- K^- π^+ decay involves a different combination of couplings than those previously presented, but is much weaker.

6 pages

References in corpus (1)

• Implications of a 300-500 GeV/c^2 Z' boson on p\bar{p} collider data at \sqrt{s}=1.8 TeV

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• New Physics Search in the Doubly Weak Decay ${\overline{B}}^0\to K^{+}{\pi }^{-}$
• Role of Resonances in Heavy Meson Processes within Standard Model and Beyond