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Full-Text Articles in Physical Sciences and Mathematics
Sensitivity Of Supersymmetric Dark Matter To The B Quark Mass, Mario E. Gomez, Tarek Ibrahim, Pran Nath, Solveig Skadhauge
Sensitivity Of Supersymmetric Dark Matter To The B Quark Mass, Mario E. Gomez, Tarek Ibrahim, Pran Nath, Solveig Skadhauge
Pran Nath
An analysis of the sensitivity of supersymmetric dark matter to variations in the b quark mass is given. Specifically we study the effects on the neutralino relic abundance from supersymmetric loop corrections to the mass of the b quark. It is known that these loop corrections can become significant for large tanβ. The analysis is carried out in the framework of MSUGRA and we focus on the region where the relic density constraints are satisfied by resonant annihilation through the s-channel Higgs poles. We extend the analysis to include CP phases taking into account the mixing of the CP-even and …
Supersymmetric Qcd And Supersymmetric Electroweak Loop Corrections To B,T, And Τ Masses Including The Effects Of Cp Phases, Tarek Ibrahim, Pran Nath
Supersymmetric Qcd And Supersymmetric Electroweak Loop Corrections To B,T, And Τ Masses Including The Effects Of Cp Phases, Tarek Ibrahim, Pran Nath
Pran Nath
We compute supersymmetric QCD and supersymmetric electroweak corrections to the b and t quark masses and to the τ lepton mass in the presence of CP phases valid for all tanβ. The analysis includes one loop diagrams arising from the exchange of gluinos, charginos and neutralinos. We find that the CP effects can change both the magnitude as well as the sign of the supersymmetric loop correction. In the region of parameter space studied we found that the numerical size of the correction to the b quark mass can be as large as 30 % and to the τ lepton …