Combining the muon anomalous magnetic moment with other constraints on the CMSSM

John Ellis; D. V. Nanopoulos; Keith A. Olive

doi:10.1016/S0370-2693(01)00480-4

Combining the muon anomalous magnetic moment with other constraints on the CMSSM

John Ellis, D. V. Nanopoulos, Keith A. Olive

Physics and Astronomy (Twin Cities)

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101 Scopus citations

Abstract

We combine the constraint suggested by the recent BNL E821 measurement of the anomalous magnetic moment of the muon on the parameter space of the constrained MSSM (CMSSM) with those provided previously by LEP, the measured rate of b → sγ decay and the cosmological relic density Ω_χh². Our treatment of Ω_χh² includes carefully the direct-channel Higgs poles in annihilation of pairs of neutralinos χ and a complete analysis of χ - ℓ̄ coannihilation. We find excellent consistency between all the constraints for tan β ≳ 10 and μ > 0, for restricted ranges of the CMSSM parameters m₀ and m_1/2. All the preferred CMSSM parameter space is within reach of the LHC, but may not be accessible to the Tevatron collider, or to a first-generation e⁺e^- linear collider with centre-of-mass energy below 1.2 TeV.

Original language	English (US)
Pages (from-to)	65-73
Number of pages	9
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	508
Issue number	1-2
DOIs	https://doi.org/10.1016/S0370-2693(01)00480-4
State	Published - May 24 2001

Bibliographical note

Funding Information:
We thank Geri Ganis for useful information, and Pran Nath for discussions. The work of D.V.N. was partially supported by DOE grant DE-F-G03-95-ER-40917, and that of K.A.O. by DOE grant DE-FG02-94ER-40823.

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title = "Combining the muon anomalous magnetic moment with other constraints on the CMSSM",

abstract = "We combine the constraint suggested by the recent BNL E821 measurement of the anomalous magnetic moment of the muon on the parameter space of the constrained MSSM (CMSSM) with those provided previously by LEP, the measured rate of b → sγ decay and the cosmological relic density Ωχh2. Our treatment of Ωχh2 includes carefully the direct-channel Higgs poles in annihilation of pairs of neutralinos χ and a complete analysis of χ - {\=ℓ} coannihilation. We find excellent consistency between all the constraints for tan β ≳ 10 and μ > 0, for restricted ranges of the CMSSM parameters m0 and m1/2. All the preferred CMSSM parameter space is within reach of the LHC, but may not be accessible to the Tevatron collider, or to a first-generation e+e- linear collider with centre-of-mass energy below 1.2 TeV.",

author = "John Ellis and Nanopoulos, {D. V.} and Olive, {Keith A.}",

note = "Funding Information: We thank Geri Ganis for useful information, and Pran Nath for discussions. The work of D.V.N. was partially supported by DOE grant DE-F-G03-95-ER-40917, and that of K.A.O. by DOE grant DE-FG02-94ER-40823.",

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AU - Ellis, John

AU - Nanopoulos, D. V.

AU - Olive, Keith A.

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N2 - We combine the constraint suggested by the recent BNL E821 measurement of the anomalous magnetic moment of the muon on the parameter space of the constrained MSSM (CMSSM) with those provided previously by LEP, the measured rate of b → sγ decay and the cosmological relic density Ωχh2. Our treatment of Ωχh2 includes carefully the direct-channel Higgs poles in annihilation of pairs of neutralinos χ and a complete analysis of χ - ℓ̄ coannihilation. We find excellent consistency between all the constraints for tan β ≳ 10 and μ > 0, for restricted ranges of the CMSSM parameters m0 and m1/2. All the preferred CMSSM parameter space is within reach of the LHC, but may not be accessible to the Tevatron collider, or to a first-generation e+e- linear collider with centre-of-mass energy below 1.2 TeV.

AB - We combine the constraint suggested by the recent BNL E821 measurement of the anomalous magnetic moment of the muon on the parameter space of the constrained MSSM (CMSSM) with those provided previously by LEP, the measured rate of b → sγ decay and the cosmological relic density Ωχh2. Our treatment of Ωχh2 includes carefully the direct-channel Higgs poles in annihilation of pairs of neutralinos χ and a complete analysis of χ - ℓ̄ coannihilation. We find excellent consistency between all the constraints for tan β ≳ 10 and μ > 0, for restricted ranges of the CMSSM parameters m0 and m1/2. All the preferred CMSSM parameter space is within reach of the LHC, but may not be accessible to the Tevatron collider, or to a first-generation e+e- linear collider with centre-of-mass energy below 1.2 TeV.

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Combining the muon anomalous magnetic moment with other constraints on the CMSSM

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