Implications for the Constrained MSSM from a new prediction for b to s gamma
Implications for the Constrained MSSM from a new prediction for b to s gamma
复制标题
b 到 s gamma 的新预测对约束 MSSM 的影响
DOI：
10.1088/1126-6708/2007/07/075
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发表时间：
2007
影响因子：
5.4
通讯作者：
R. Trotta
中科院分区：
文献类型：
--
作者：
L. Roszkowski;R. R. Austri;R. Trotta
我们根据更新的约束重新检查了受约束的最小二乘模型的性质，特别注意了最近对→Xsγ的标准模型预测的重大转变的影响。借助于马尔可夫链蒙特卡罗扫描技术，我们同时改变所有相关参数，得到贝叶斯后验概率图。我们发现，μ>；0的情况仍然受到青睐，而对于μ<；0，要找到一个符合当前约束的良好的全局匹配要困难得多。在这两种情况下，我们都发现了对焦点区域的强烈偏好。这带来了在直接搜索中探测中性微子暗物质的前景改善，而大型强子对撞机上的超级伙伴搜索变得更加困难，特别是当μ<；0时。相比之下，在Tevatron和LHC上探索最轻的希格斯玻色子的整个质量范围的前景仍然非常好，这应该会随着暗物质的搜索，允许人们进入原本具有实验挑战性的焦点区域。我们也采用了另一种衡量平均拟合质量的方法，这意味着目前的数据还不足以得出更明确的结论。我们还评论了我们的结果对先验选择和其他一些假设的依赖性。
We re-examine the properties of the Constrained MSSM in light of updated constraints, paying particular attention to the impact of the recent substantial shift in the Standard Model prediction for → Xsγ. With the help of a Markov Chain Monte Carlo scanning technique, we vary all relevant parameters simultaneously and derive Bayesian posterior probability maps. We find that the case of μ > 0 remains favored, and that for μ < 0 it is considerably more difficult to find a good global fit to current constraints. In both cases we find a strong preference for a focus point region. This leads to improved prospects for detecting neutralino dark matter in direct searches, while superpartner searches at the LHC become more problematic, especially when μ < 0. In contrast, prospects for exploring the whole mass range of the lightest Higgs boson at the Tevatron and the LHC remain very good, which should, along with dark matter searches, allow one to gain access to the otherwise experimentally challenging focus point region. An alternative measure of the mean quality-of-fit which we also employ implies that present data are not yet constraining enough to draw more definite conclusions. We also comment on the dependence of our results on the choice of priors and on some other assumptions.
影响因子：
8.6
作者：
M. Misiak;H. Asatrian;K. Bieri;M. Czakon;A. Czarnecki;T. Ewerth;A. Ferroglia;P. Gambino;M. Gorbahn;C. Greub;U. Haisch;A. Hovhannisyan;T. Hurth;A. Mitov;Poghosyan;M. Ślusarczyk;M. Steinhauser
通讯作者：
M. Misiak;H. Asatrian;K. Bieri;M. Czakon;A. Czarnecki;T. Ewerth;A. Ferroglia;P. Gambino;M. Gorbahn;C. Greub;U. Haisch;A. Hovhannisyan;T. Hurth;A. Mitov;Poghosyan;M. Ślusarczyk;M. Steinhauser