6533b861fe1ef96bd12c4a72
RESEARCH PRODUCT
alpha(s)(m(Z)) from tau decays with matching conditions at three loops
German RodrigoAntonio PichArcadi Santamariasubject
High Energy Physics - PhenomenologyHigh Energy Physics::PhenomenologyFísicaHigh Energy Physics::Experimentdescription
Using the recent four-loop calculations of the QCD beta-function and the three-loop matching coefficients we study the induced error in $\alpha_s(m_Z)$ obtained from $\alpha_s(m_tau)$ due to the evolution procedure. We show that, when consistent matching and running is used at this order, these errors are pushed below 0.0005 in $\alpha_s(m_Z)$.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-07-25 |