Quark-hadron duality violations and higher-order 1/m b corrections in inclusive semileptonic B decays

Quark-hadron duality violations and higher-order 1/m b corrections in inclusive semileptonic B decays

Blog Article

Abstract The theoretical description and data for inclusive semileptonic B decays click here have reached incredible precision.This motivated us to re-animate the discussion of possible Quark-Hadron Duality violations.There seems that there is currently no evidence of a failure of the Heavy Quark Expansion (HQE) used to compute observables for these decays.However, we might arrive at a point where an asymptotic behaviour of the HQE would limit a further increase of precision.

We discuss this possibility and suggest a simple model, which can be used to pet calming peanut butter study the effects of higher orders in the 1/m b expansion and possible quark-hadron duality violations.We devise observables sensitive only to such higher-order effects to test the behaviour of the HQE.Using these observables we obtain a first estimate of possible quark-hadron duality violations using the measured q 2 moments.