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

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

2001-10-17

arxiv.org/abs/hep-ph/0110233v1

Phys.Rev. D65 (2002) 017301

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages

Scientific paper

10.1103/PhysRevD.65.017301

The heavy Z' boson with family nonuniversal couplings can introduce flavour changing effects. Constraints on nondiagonal Z' couplings coming from the \mu-e conversion in a muonic atom, K^0 - \bar{K^0} and B - \bar{B} mixing, epsilon and epsilon'/ \epsilon CP- violating coefficients have been already established. By using the OPAL upper bound of the branching ratio for the B^- -> K^- K^- \pi^+ 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^- \pi^+ decay involves a different combination of couplings than those previously presented, but is much weaker.

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