The weak-magnetic moment of heavy quarks
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The weak-magnetic moment of heavy quarks

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The weak-magnetic moment of heavy quarks

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Bernabeu Alberola, José Perfil; Vidal Perona, Jorge Perfil; González Sprinberg, Gabriel A.
This document is a artículoDate1997

Este documento está disponible también en : http://dx.doi.org/10.1016/S0370-2693(97)

Este documento está disponible también en : http://hdl.handle.net/10550/32449
With initial and final particles on-shell, the anomalous weak-magnetic dipole moments of b and c quarks are electroweak gauge invariant quantities of the effective couplings and , respectively, and good candidates to test the Standard Model and/or new physics. Here we present a complete computation of these quantities within the Standard Model. We show that decoupling properties with respect to heavy particles do take place in the weak magnetic moment. The obtained values, ab(MZ2) = (2.98 − 1.56i) × 10−4 and ac(MZ2) = (−2.80 + 1.09i) × 10−5 are dominated by one-gluon exchange diagrams. The electroweak corrections are less than 1% of the total magnitude.

    Bernabeu Alberola, José; Vidal Perona, Jorge; Gonzalez Sprinberg, G.A. (1997) The weak-magnetic moment of heavy quarks Physics Letters B 397 3-4 255 262
http://dx.doi.org/10.1016/S0370-2693(97)

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