Implications for new physics from ${\bar B}^0\to π^0π^0$ and ${\bar B}^0\to {\bar K}^0K^0$

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dc.creatorCheng, Jian-Feng
dc.creatorGao, Yuan-Ning
dc.creatorHuang, Chao-Shang
dc.creatorWu, Xiao-Hong
dc.date2005-12-21
dc.date2006-06-02
dc.date.accessioned2026-07-07T10:44:33Z
dc.date.available2026-07-07T10:44:33Z
dc.descriptionWe have analyzed the ${\bar B}^0\to π^0π^0$ puzzle in three kinds of models beyond the standard model (SM). It is shown that the minimal flavor violation (MFV) models, the minimal supersymmetric standard model (MSSM), and the two Higgs doublet models (2HDM) I and II can not give an explanation of the ${\bar B}^0\to π^0π^0$ puzzle within $1 σ$ experimental bounds and the model III 2HDM can explain the puzzle without a conflict with other experimental measurements. If the constraint on $C_{8g}$ from $b\to s g$ is not imposed, for all kinds of insertions considered there are regions of parameter space, where the scalar quark mass is larger (much larger) than the gluino mass in the case of LR or RL (LL or RR), in which the puzzle can be resolved within $1 σ$ experimental bounds.
dc.description7 pages, 3 eps files. Add some more explicit analysis version appeared in PLB
dc.identifierhttps://arxiv.org/abs/hep-ph/0512268
dc.identifierhttp://arxiv.org/abs/hep-ph/0512268
dc.identifierPhys.Lett.B637:260-265,2006
dc.identifierdoi:10.1016/j.physletb.2006.04.052
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/182631
dc.subjectHigh Energy Physics - Phenomenology
dc.titleImplications for new physics from ${\bar B}^0\to π^0π^0$ and ${\bar B}^0\to {\bar K}^0K^0$
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