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- W25441915 abstract "The CMS Collaboration has released the results of its search for supersymmetry, by applying an ${ensuremath{alpha}}_{T}$ method to $1.1/mathrm{fb}$ of data at 7 TeV. The null result excludes (at 95% C.L.) a low-mass region of the Constrained MSSM's parameter space that was previously favored by other experiments. Additionally, the negative result of the XENON100 dark matter search has excluded (at 90% C.L.) values of the spin-independent scattering cross sections ${ensuremath{sigma}}_{p}^{mathrm{SI}}$ as low as ${10}^{ensuremath{-}8}text{ }text{ }mathrm{pb}$. We incorporate these improved experimental constraints into a global Bayesian fit of the Constrained MSSM by constructing approximate likelihood functions. In the case of the ${ensuremath{alpha}}_{T}$ limit, we simulate detector efficiency for the CMS ${ensuremath{alpha}}_{T}1.1/mathrm{fb}$ analysis and validate our method against the official 95% C.L. contour. We identify the 68% and 95% credible posterior regions of the CMSSM parameters, and also find the best-fit point. We find that the credible regions change considerably once a likelihood from ${ensuremath{alpha}}_{T}$ is included, in particular, the narrow light Higgs resonance region becomes excluded, but the focus point/horizontal branch region remains allowed at the $1ensuremath{sigma}$ level. Adding the limit from XENON100 has a weaker additional effect, in part due to large uncertainties in evaluating ${ensuremath{sigma}}_{p}^{mathrm{SI}}$, which we include in a conservative way, although we find that it reduces the posterior probability of the focus point region to the $2ensuremath{sigma}$ level. The new regions of high posterior favor squarks lighter than the gluino and all but one Higgs bosons heavy. The dark matter neutralino mass is found in the range $250text{ }text{ }mathrm{GeV}ensuremath{lesssim}{m}_{ensuremath{chi}}ensuremath{lesssim}343text{ }text{ }mathrm{GeV}$ (at $1ensuremath{sigma}$) while, as the result of improved limits from the LHC, the favored range of ${ensuremath{sigma}}_{p}^{mathrm{SI}}$ is pushed down to values below ${10}^{ensuremath{-}9}text{ }text{ }mathrm{pb}$. We highlight tension between $ensuremath{delta}(gensuremath{-}2{)}_{ensuremath{mu}}^{mathrm{SUSY}}$ and $mathcal{B}mathcal{R}(overline{B}ensuremath{rightarrow}{X}_{s}ensuremath{gamma})$, which is exacerbated by including the ${ensuremath{alpha}}_{T}$ limit; each constraint favors a different region of the CMSSM's mass parameters." @default.
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- W25441915 date "2012-04-12" @default.
- W25441915 modified "2023-09-25" @default.
- W25441915 title "Bayesian implications of current LHC and XENON100 search limits for the CMSSM" @default.
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- W25441915 doi "https://doi.org/10.1103/physrevd.85.075012" @default.
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