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arXiv 0903.4196hep-ph
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SO(10)超对称大统一理论中Gaugino质量的非普适性:低能谱和对撞机信号

Gaugino mass non-universality in an SO(10) supersymmetric Grand Unified Theory: low-energy spectra and collider signals

Subhaditya Bhattacharya, Joydeep Chakrabortty

摘要:

在SO(10)大统一理论(GUT)中,Higgs超场属于非单重态表象{ \bf 54}和{ \bf 770},我们在超引力(SUGRA)框架下导出了非普适的Gaugino质量比.我们评估了现象学上可行的中间断裂链$SU(4)_C \times SU(2)_L \times SU(2)_R (G_{422})$的比率。在对高更质量比进行了全面的计算之后,我们注意到在早期对{ \bf 54}的计算中存在一些错误,利用重整化群方程(RGE),我们得到了这种破缺模式的有趣的低尺度现象。在这里,我们假设SO(10)GUT群破缺到中间规范群和破缺到标准模型(SM)都发生在GUT尺度本身。我们还研究了在大型强子对撞机(LHC)的多轻子通道的对撞机签名的一些选定的基准点所允许的冷暗物质遗物密度约束的WMAP数据,并比较这些结果与最小超引力(mSUGRA)框架具有类似的胶子质量表明他们在这方面的可验证性。

英文摘要:

We derive the non-universal gaugino mass ratios in a supergravity (SUGRA) framework where the Higgs superfields belong to the non-singlet representations {\bf 54} and {\bf 770} in a SO(10) Grand Unified Theory (GUT). We evaluate the ratios for the phenomenologically viable intermediate breaking chain $SU(4)_C \times SU(2)_L \times SU(2)_R (G_{422})$. After a full calculation of the gaugino mass ratios, noting some errors in the earlier calculation for {\bf 54}, we obtain, using the renormalisation group equations (RGE), interesting low scale phenomenology of such breaking patterns. Here, we assume the breaking of the SO(10) GUT group to the intermediate gauge group and that to the Standard Model (SM) take place at the GUT scale itself. We also study the collider signatures in multilepton channels at the Large Hadron Collider (LHC) for some selected benchmark points allowed by the cold dark matter relic density constraint provided by the WMAP data and compare these results with the minimal supergravity (mSUGRA) framework with similar gluino masses indicating their distinguishability in this regard.

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