TY - JOUR
T1 - Tan β-enhanced supersymmetric corrections to the anomalous magnetic moment of the muon
AU - Marchetti, Schedar
AU - Mertens, Susanne
AU - Nierste, Ulrich
AU - Stöckinger, Dominik
PY - 2009/1/5
Y1 - 2009/1/5
N2 - We report on a two-loop supersymmetric contribution to the magnetic moment (g-2)μ of the muon which is enhanced by two powers of tanβ. This contribution arises from a shift in the relation between the muon mass and Yukawa coupling and can increase the supersymmetric contribution to (g-2)μ sizably. As a result, if the currently observed 3σ deviation between the experimental and SM theory value of (g-2)μ is analyzed within the minimal supersymmetric standard model (MSSM), the derived constraints on the parameter space are modified significantly: If (g-2)μ is used to determine tan β as a function of the other MSSM parameters, our corrections decrease tanβ by roughly 10% for tan β=50.
AB - We report on a two-loop supersymmetric contribution to the magnetic moment (g-2)μ of the muon which is enhanced by two powers of tanβ. This contribution arises from a shift in the relation between the muon mass and Yukawa coupling and can increase the supersymmetric contribution to (g-2)μ sizably. As a result, if the currently observed 3σ deviation between the experimental and SM theory value of (g-2)μ is analyzed within the minimal supersymmetric standard model (MSSM), the derived constraints on the parameter space are modified significantly: If (g-2)μ is used to determine tan β as a function of the other MSSM parameters, our corrections decrease tanβ by roughly 10% for tan β=50.
UR - http://www.scopus.com/inward/record.url?scp=60949086560&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.79.013010
DO - 10.1103/PhysRevD.79.013010
M3 - Article
AN - SCOPUS:60949086560
SN - 1550-7998
VL - 79
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 1
M1 - 013010
ER -