Quadratic Mass Corrections of Order $α_s^3 m_q^2/s$ to the Decay Rate of Z- and W- Bosons

K. G. Chetyrkin; J. H. Kuhn

doi:10.1016/s0370-2693(97)00631-x

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arXiv · hep-ph/9609202

Quadratic Mass Corrections of Order $α_s^3 m_q^2/s$ to the Decay Rate of Z- and W- Bosons

K. G. Chetyrkin·J. H. Kuhn

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Abstract

We analytically compute quadratic mass corrections of order $α_s^3 m_q^2/s$ to the absorptive part of the (non-diagonal) correlator of two axial vector currents. This allows us to find the correction of order $α_s^3 m_q^2/M^2_W$ to the $Γ(W -->hadrons)$ as well as similar corrections to $Γ(Z -->hadrons)$.

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K. G. Chetyrkin, J. H. Kuhn. 1996-08-30. Quadratic Mass Corrections of Order $α_s^3 m_q^2/s$ to the Decay Rate of Z- and W- Bosons. https://doi.org/10.1016/s0370-2693(97)00631-x

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