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arXiv 1302.4394hep-phastro-ph.CO
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SUSY进入黑暗:CMSSM中的重标量

SUSY into Darkness: Heavy Scalars in the CMSSM

Van E. Mayes

摘要:

的mSUGRA/CMSSM参数空间的调查。确定并讨论了满足所有实验约束的参数空间的可行区域。这些限制包括最轻的CP-偶希格斯粒子的质量为124-127 GeV,以及冷暗物质(CDM)的正确残余密度。对应于这些区域的超伴子光谱属于著名的双曲分支(HB),并发现拥有亚TeV的中性伴子和电荷伴子,混合的Bino/Higgsino LSP的质量为200-800 GeV。此外,这些模型拥有~3-4 TeV的胶子质量和重夸克和质量比胶子质量重的slepton。希格斯粒子质量接近125 GeV,残余粒子密度为0.109 < Ωh^2 < 0.123的光谱需要大约1%水平的EWFT,而残余粒子密度低得多的光谱只需要百分之几的EWFT。此外,SI中性子质子直接检测截面被发现低于或在XENON 100 2-sigma极限内,并且现在或在不久的将来应该可以通过实验获得。最后指出,对应于mSUGRA/CMSSM参数空间的这些区域(m_0正比于m_{1/2},m_0^2 >> m_{1/2} ^2,A_0 = - m_{1/2})的超对称破缺软项可以由D3膜的IIB型通量紧致化中的一般通量诱导软项得到.

英文摘要:

A survey of the mSUGRA/CMSSM parameter space is presented. The viable regions of the parameter space which satisfy all experimental constraints are identified and discussed. These constraints include a 124-127 GeV mass for the lightest CP-even Higgs and the correct relic density for cold dark matter (CDM). The superpartner spectra corresponding to these regions fall within the well-known hyperbolic branch (HB) and are found to possess sub-TeV neutralinos and charginos, with mixed Bino/Higgsino LSP's with 200-800 GeV masses. In addition, the models possess ~3-4 TeV gluino masses and heavy squarks and sleptons with masses heavier than the gluino mass. Spectra with a Higgs mass near 125 GeV and a relic density 0.109 < Ωh^2 < 0.123 are found to require EWFT at around the one-percent level, while those spectra with a much lower relic density require EWFT of only a few percent. Moreover, the SI neutralino-proton direct detection cross-sections are found to be below or within the XENON100 2-sigma limits and should be experimentally accessible now or in the near future. Finally, it is pointed-out that the supersymmetry breaking soft terms corresponding to these regions of the mSUGRA/CMSSM parameter space (m_0 proportional to m_{1/2} with m_0^2 >> m_{1/2}^2 and A_0 = -m_{1/2}) may be obtained from general flux-induced soft terms in Type IIB flux compactifications with D3 branes.

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