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BMSSM implications for cosmology
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DOI：10.1088/1126-6708/2009/08/053.png)
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摘要
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The addition of non-renormalizable terms involving the Higgs fields to the MSSM (BMSSM) ameliorates the little hierarchy problem of the MSSM. We analyze in detail the two main cosmological issues affected by the BMSSM: dark matter and baryogenesis. The regions for which the relic abundance of the LSP is consistent with WMAP and collider constraints are identified, showing that the bulk region and other previously excluded regions are now permitted. Requiring vacuum stability limits the allowed regions. Based on a two-loop finite temperature effective potential analysis, we show that the electroweak phase transition can be sufficiently first order in regions that for the MSSM are incompatible with the LEP Higgs mass bound, including parameter values of tan beta less than or similar to 5, m((t) over tilde1) > m(t), m(Q) << TeV.
Keyword:
Supersymmetry Phenomenology
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期刊
IF:
5.5
论文数:
4.0W
被引数:
13.7W
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引用论文
Bounds on Kaluza-Klein excitations of the SM vector bosons from electroweak tests.png)
PHYSICS LETTERS B
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PHYSICS LETTERS BIF4.5
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