Multidimensional mSUGRA likelihood maps

被引:104
作者
Allanach, BC
Lester, CG
机构
[1] CMS, DAMTP, Cambridge CB3 0WA, England
[2] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
来源
PHYSICAL REVIEW D | 2006年 / 73卷 / 01期
关键词
D O I
10.1103/PhysRevD.73.015013
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We calculate the likelihood map in the full 7-dimensional parameter space of the minimal supersymmetric standard model assuming universal boundary conditions on the supersymmetry breaking terms. Simultaneous variations of m(0), A(0), M-1/2, tan beta, m(t), m(b) and alpha(s)(M-Z) are applied using a Markov chain Monte Carlo algorithm. We use measurements of b -> s gamma, (g-2)(mu) and Omega(DM)h(2) in order to constrain the model. We present likelihood distributions for some of the sparticle masses, for the branching ratio of B-s(0)->mu(+)mu(-) and for m(tau)-m(chi 10). An upper limit of 2x10(-8) on this branching ratio might be achieved at the Tevatron, and would rule out 29% of the currently allowed likelihood. If one allows for non-thermal-neutralino components of dark matter, this fraction becomes 35%. The mass ordering allows the important cascade decay (q) over tilde (L)->chi(0)(2)->(l) over tilde (R)->chi(0)(1) with a likelihood of 24 +/- 4%. The stop-coannihilation region is highly disfavored, whereas the light Higgs region is marginally disfavored.
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页数:18
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