A Simple Way to Estimate the Value of $\barα\equivα(m^2_Z)$

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dc.creatorNevzorov, R. B.
dc.creatorNovikov, A. V.
dc.creatorVysotsky, M. I.
dc.date1994-05-26
dc.date.accessioned2026-07-07T03:56:52Z
dc.date.available2026-07-07T03:56:52Z
dc.descriptionTo obtain the value of electromagnetic coupling constant at $q^2=m^2_Z$, $\barα$, which plays a key role in electroweak physics one has to integrate the cross-section of $e^+e^-$-annihilation into hadrons divided by $(s-m^2_Z)$ over $s$ from threshold to infinity. By combining, for each flavor channel, the contribution of lowest resonance with the perturbative QCD continuum, we obtain $1/\barα = 128.90\pm 0.06 $ a result which is close to known result obtained with purely experimental inputs, i.e. $1/\barα = 128.87\pm 0.12$.
dc.descriptionLaTex, 6 pages, preprint # FTUV/94-27, IFIC/94-25
dc.identifierhttps://arxiv.org/abs/hep-ph/9405390
dc.identifierhttp://arxiv.org/abs/hep-ph/9405390
dc.identifierJETP Lett. 60 (1994) 399-403
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/45167
dc.subjectHigh Energy Physics - Phenomenology
dc.titleA Simple Way to Estimate the Value of $\barα\equivα(m^2_Z)$
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