Rare decay π0 → e+e― constraints on the light CP-odd Higgs in NMSSM
Rare decay π0 → e+e― constraints on the light CP-odd Higgs in NMSSM
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DOI：
10.1016/j.physletb.2009.04.081
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发表时间：
2008-08
影响因子：
4.4
通讯作者：
Qin Chang;Ya-dong Yang
中科院分区：
文献类型：
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作者：
Qin Chang;Ya-dong Yang
我们通过稀有衰变π0→e+e−在NMSSM中约束光CP-奇Higgs A10。结果表明，当把B（π0→e+e−）的理论预言与最近KTeV测量结果之间可能存在的3 σ差异结合起来时，不能解决从π →γA10，aμ和π0→γγ的约束.此外，组合约束也排除了涉及mA 10 =214.3 MeV的情况，该情况被用来解释HyperCP合作组织发现的+→pμ+μ−衰变的异常。
We constrain the light CP-odd Higgs A10 in NMSSM via the rare decay π0→e+e− . It is shown that the possible 3 σ discrepancy between theoretical predictions and the recent KTeV measurement of B(π0→e+e−) cannot be resolved when the constraints from ϒ→γA10 , aμ and π0→γγ are combined. Furthermore, the combined constraints also exclude the scenario involving mA10=214.3 MeV , which is invoked to explain the anomaly in the Σ+→pμ+μ− decay found by the HyperCP Collaboration.