G2-MSSM:: An M theory motivated model of particle physics

被引:108
作者
Acharya, Bobby S. [1 ,2 ]
Bobkov, Konstantin [3 ]
Kane, Gordon L. [3 ]
Shao, Jing [3 ]
Kumar, Piyush [4 ,5 ]
机构
[1] Abdus Salam Int Ctr Theoret Phys, Trieste, Italy
[2] Ist Nazl Fis Nucl, Sez Trieste, Trieste, Italy
[3] Univ Michigan, Michigan Ctr Theoret Phys, Ann Arbor, MI 48109 USA
[4] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
[5] Univ Calif Berkeley, Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA
来源
PHYSICAL REVIEW D | 2008年 / 78卷 / 06期
关键词
D O I
10.1103/PhysRevD.78.065038
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We continue our study of the low energy implications of M theory vacua on G(2)-manifolds, undertaken in B. S. Acharya, K. Bobkov, G. L. Kane, P. Kumar, and J. Shao, Phys. Rev. D 76, 126010 (2007); B. Acharya, K. Bobkov, G. Kane, P. Kumar, and D. Vaman, Phys. Rev. Lett. 97, 191601 (2006), where it was shown that the moduli can be stabilized and a TeV scale generated, with the Planck scale as the only dimensionful input. A well-motivated phenomenological model, the G(2)-MSSM, can be naturally defined within the above framework. In this paper, we study some of the important phenomenological features of the G(2)-MSSM. In particular, the soft supersymmetry breaking parameters and the superpartner spectrum are computed. The G(2)-MSSM generically gives rise to light gauginos and heavy scalars with wino lightest supersymmetric particles when one tunes the cosmological constant. Electroweak symmetry breaking is present but fine-tuned. The G(2)-MSSM is also naturally consistent with precision gauge coupling unification. The phenomenological consequences for cosmology and collider physics of the G(2)-MSSM will be reported in more detail soon.
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页数:24
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