TY - JOUR
T1 - Pion leptonic decays and supersymmetry
AU - Ramsey-Musolf, Michael J.
AU - Su, Shufang
AU - Tulin, Sean
PY - 2007/11/29
Y1 - 2007/11/29
N2 - We compute supersymmetric contributions to pion leptonic (πl2) decays in the minimal supersymmetric standard model (MSSM). When R-parity is conserved, the largest contributions to the ratio Re/ μΓ[π+→e+νe(γ)]/Γ[π+→μ+νμ (γ)] arise from one-loop (V-A)(V-A) corrections. These contributions can be potentially as large as the sensitivities of upcoming experiments; if measured, they would imply significant bounds on the chargino and slepton sectors complementary to current collider limits. We also analyze R-parity-violating interactions, which may produce a detectable deviation in Re/μ while remaining consistent with all other precision observables.
AB - We compute supersymmetric contributions to pion leptonic (πl2) decays in the minimal supersymmetric standard model (MSSM). When R-parity is conserved, the largest contributions to the ratio Re/ μΓ[π+→e+νe(γ)]/Γ[π+→μ+νμ (γ)] arise from one-loop (V-A)(V-A) corrections. These contributions can be potentially as large as the sensitivities of upcoming experiments; if measured, they would imply significant bounds on the chargino and slepton sectors complementary to current collider limits. We also analyze R-parity-violating interactions, which may produce a detectable deviation in Re/μ while remaining consistent with all other precision observables.
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U2 - 10.1103/PhysRevD.76.095017
DO - 10.1103/PhysRevD.76.095017
M3 - Article
AN - SCOPUS:36749080944
SN - 1550-7998
VL - 76
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 9
M1 - 095017
ER -