<i>B</i>-physics observables and electroweak precision data in the CMSSM, mGMSB and mAMSB

Heinemeyer, S.; Miao, X.; Su, Shufang; Weiglein, G.

doi:10.1088/1126-6708/2008/08/087

Cited by 32 publications

(21 citation statements)

References 265 publications

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“…First we consider the flavour observables. The branching ratio of B → X s γ has been thoroughly studied for its high sensitivity to new physics effects (see for example [31][32][33][34]), since the SM contributions only appear at loop level. We follow the NNLO calculation of [35,36] for the theoretical predictions.…”

Section: Constraintsmentioning

confidence: 99%

Implications of LHC searches on SUSY particle spectra

2012

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Abstract. We study the implications of LHC searches on SUSY particle spectra using flat scans of the 19-parameter pMSSM phase space. We apply constraints from flavour physics, gµ − 2, dark matter and earlier LEP and Tevatron searches. The sensitivity of the LHC SUSY searches with jets, leptons and missing energy is assessed by reproducing with fast simulation the recent CMS analyses after validation on benchmark points. We present results in terms of the fraction of pMSSM points compatible with all the constraints which are excluded by the LHC searches with 1 fb −1 and 15 fb −1 as a function of the mass of strongly and weakly interacting SUSY particles. We also discuss the suppression of Higgs production cross sections for the MSSM points not excluded and contrast the region of parameter space tested by the LHC data with the constraints from dark matter direct detection experiments.

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Section: Constraintsmentioning

confidence: 99%

Implications of LHC searches on SUSY particle spectra

2012

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“…In a recent paper [4], we presented some results from frequentist analyses of the parameter spaces of the constrained minimal supersymmetric extension of the Standard Model (CMSSM) -in which the soft supersymmetry-breaking scalar and gaugino masses are each constrained to universal values m 0 and m 1/2 , respectively [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] -and the NUHM1 -in which the soft supersymmetrybreaking contributions to the Higgs masses are allowed a different but common value [25][26][27]. Other statistical analyses in these models can be found in [28][29][30][31][32][33][34][35][36][37][38][39] and Markov Chain Monte Carlo (MCMC) analyses in [40][41][42][43][44][45][46][47][48][49]…”

Section: Introductionmentioning

confidence: 99%

Likelihood functions for supersymmetric observables in frequentist analyses of the CMSSM and NUHM1

et al. 2009

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On the basis of frequentist analyses of experimental constraints from electroweak precision data, (g − 2)µ, B physics and cosmological data, we investigate the parameters of the constrained MSSM (CMSSM) with universal soft supersymmetry-breaking mass parameters, and a model with common non-universal Higgs masses (NUHM1). We present χ 2 likelihood functions for the masses of supersymmetric particles and Higgs bosons, as well as BR(b → sγ), BR(Bs → µ + µ − ) and the spin-independent dark matter scattering cross section, σ SI p . In the CMSSM we find preferences for sparticle masses that are relatively light. In the NUHM1 the best-fit values for many sparticle masses are even slightly smaller, but with greater uncertainties. The likelihood functions for most sparticle masses are cut off sharply at small masses, in particular by the LEP Higgs mass constraint. Both in the CMSSM and the NUHM1, the coannihilation region is favoured over the focus-point region at about the 3-σ level, largely but not exclusively because of (g − 2)µ. Many sparticle masses are highly correlated in both the CMSSM and NUHM1, and most of the regions preferred at the 95% C.L. are accessible to early LHC running, though high-luminosity running would be needed to cover the regions allowed at the 3-σ levels. Some slepton and chargino/neutralino masses should be in reach at the ILC. The masses of the heavier Higgs bosons should be accessible at the LHC and the ILC in portions of the preferred regions in the (MA, tan β) plane. In the CMSSM, the likelihood function for BR(Bs → µ + µ − ) is peaked close to the Standard Model value, but much larger values are possible in the NUHM1. We find that values of σ SI p > 10 −10 pb are preferred in both the CMSSM and the NUHM1. We study the effects of dropping the (g − 2)µ, BR(b → sγ), Ωχh 2 and M h constraints, demonstrating that they are not in tension with the other constraints.

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“…This will be the condition that we will apply below in the scans. We illustrate in figure 1 extensively and severe constraints have been obtained on the parameters of the MSSM [36][37][38]. Here we compute the most constraining flavour observables with the SuperIso program [39,40].…”

Section: The Vacuummentioning

confidence: 99%

Flavour physics constraints in the BMSSM

Bernal¹,

Losada

Mahmoudi

2011

J. High Energ. Phys.

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Abstract:We study the implications of the presence of the two leading-order, nonrenormalizable operators in the Higgs sector of the MSSM to flavour physics observables. We identify the constraints of flavour physics on the parameters of the BMSSM when we: a) focus on a region of parameters for which electroweak baryogenesis is feasible, b) use a CMSSM-like parametrization, and c) consider the case of a generic NUHM-type model. We find significant differences as compared to the standard MSSM case.

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B-physics observables and electroweak precision data in the CMSSM, mGMSB and mAMSB

Cited by 32 publications

References 265 publications

Implications of LHC searches on SUSY particle spectra

Implications of LHC searches on SUSY particle spectra

Likelihood functions for supersymmetric observables in frequentist analyses of the CMSSM and NUHM1

Flavour physics constraints in the BMSSM

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