Extad(Sp R, μ^) ∼-B^r(A/k)

→ μ + μ − decay in the R - parity violating minimal supergravity

We study Bs → μ+μ− in the context of the R-parity violating minimal supergravity in the high tan β regime. We find that the lowest value of the branching ratio can go well below the present LHCb sensitivity and hence Bs → μ+μ− can even be invisible to the LHC. We also find that the present upper bound on Br(Bs → μ+μ−) puts strong constraint on the minimal supergravity parameter space. The const...

R Symmetry and the μ Problem

A natural origin for the μ and μB parameters of weak scale supersymmetric theories is proposed, applicable to any supersymmetry breaking messenger scale between the weak and Planck scales. Although quite general, it requires supersymmetric interactions to respect an R symmetry with definite quantum numbers, and it requires some new scale of symmetry breaking. The required R symmetry distinguish...

B s → μ + μ − decay in the R - parity violating minimal supergravity

We study Bs → μ+μ− in the context of the R-parity violating minimal supergravity in the high tanβ regime. We find that the present upper bound on Br(Bs → μ+μ−) puts strong constraint on the minimal supergravity parameter space. The constraints become more severe if the upper bound is close to its standard model prediction. We also find that the minimum value of the branching ratio can go well b...

Towards a determination of the chiral couplings at NLO in 1 / N C : L r 8 ( μ ) and C r 38 ( μ )

Form - factors and current correlators : chiral couplings L r 10 ( μ ) and C r 87 ( μ ) at NLO in 1 / N

Using the resonance chiral theory Lagrangian, we perform a calculation of the vector and axial-vector two-point functions at the next-to-leading order (NLO) in the 1/NC expansion. We have analyzed these correlators within the singleresonance approximation and have also investigated the corrections induced by a second multiplet of vector and axial-vector resonance states. Imposing the correct QC...