Investigation of $B_{u,d}\to (π, K) π$ decays within unparticle physics

Details Investigation of $B_{u,d}\to (π, K) π$ decays within unparticle physics Investigation of $B_{u,d}\to (π, K) π$ decays within unparticle physics

2008-01-07

arxiv.org/abs/0801.0895v3

Phys.Lett.B671:250-255,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

Analysis on mixing part is revised

Scientific paper

10.1016/j.physletb.2008.12.007

We investigate the implication of unparticle physics on the B_{u,d}\to (\pi, K) \pi decays under the constraints of the B_{d,s}-\bar B_{d,s} mixing. We found that not only the unparticle parameters that belong to the flavor changing neutral current (FCNC) processes but also scaling dimension d_{\UP} could be constrained by the B_{d,s}-\bar B_{d,s} mixing phenomenology. Employing the minimum \chi^2 analysis to the B_{u,d}\to (\pi, K) \pi decays with the constraints of B_{d,s} mixing, we find that the puzzle of large branching ratio for B_{d}\to \pi^0 \pi^0 and the discrepancy between the standard model estimation and data for the direct CP asymmetry of B^+ \to K^+ \pi^0 and B_d \to \pi^+\pi^- can be resolved well. However, the mixing induced CP asymmetry of B_d\to K_S \pi^0 could not be well accommodated by the unparticle contributions.

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