Dimension-7 operators in the b -> s transition

作者：Chalons G^*; Domingo F

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2014, 89(3): 034004.

DOI：10.1103/PhysRevD.89.034004

We extend the low-energy effective field theory relevant for b -> s transitions up to operators of mass dimension seven and compute the associated anomalous-dimension matrix. We then compare our findings to the known results for dimension-six operators and derive a solution for the renormalization group equations involving operators of dimension seven. We finally apply our analysis to a particularly simple case where the Standard Model is extended by an electroweak-magnetic operator and consider limits on this scenario from the decays B-s -> mu(+)mu(-) and B -> K nu(nu) over bar.

• 出版日期2014-2-4