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arXiv 1106.4385hep-ph
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SUSY增强重Higgs产生

SUSY Enhancement of Heavy Higgs Production

A. V. Bednyakov, D. I. Kazakov, S. H. Tanyildizi

摘要:

我们在约束MSSM的框架内研究了大型强子对撞机重希格斯粒子产生的横截面。它不仅被tan ^2 β增强,有时也被squark贡献增强。首先,我们考虑mSUGRA中的普遍情况,并发现要获得所需的增强,需要较大的负值A_0,这似乎与b->s伽马衰变率不相容。为了改善这种情况,我们在希格斯区释放统一要求。然后,可以同时满足所有要求并增强squark贡献。后者可以获得几个单位的因子,从而增加总横截面,然而,总横截面仍然小于相关的H b bbar产品的横截面。我们还考虑了所选基准点的其他一些后果。

英文摘要:

We study the cross-section of heavy Higgs production at the LHC within the framework of the Constrained MSSM. It is not only enhanced by tan^2 beta but sometimes is also enhanced by the squark contribution. First, we consider the universal scenario within mSUGRA and find out that to get the desired enhancement one needs large negative values of A_0, which seems to be incompatible with the b->s gamma decay rate. To improve the situation, we release the unification requirement in the Higgs sector. Then it becomes possible to satisfy all requirements simultaneously and enhance the squark contribution. The latter can gain a factor of several units increasing the overall cross-section which, however, is still smaller than the cross-section of the associated H b bbar production. We consider also some other consequences of the chosen benchmark point.

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