A Comment on form-factor mass singularities in flavor changing neutral currents
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A Comment on form-factor mass singularities in flavor changing neutral currents

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A Comment on form-factor mass singularities in flavor changing neutral currents

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Sanchis Lozano, Miguel Ángel
This document is a artículoDate1991
Flavor-changing effective verticesq l q h V 0, whereV 0 represents a neutral gauge boson (γ,Z 0,g), involving a heavy external quark, are discussed within the standard model at one-loop level and second-order approximation in external momenta and masses: the logarithmic singular terms in the form factors at vanishing mass of the internal quark in the loop have to be replaced by pieces coming from next order in external momenta. Implications in theb→d+X penguin transitions are commented.

    Sanchis Lozano, Miguel Ángel 1991 A Comment on form-factor mass singularities in flavor changing neutral currents Zeitschrift für Physik C-Particles and Fields 52 3 511 515
http://dx.doi.org/10.1007/BF01559448
distribuido bajo licencia Creative Commons de Reconocimiento-NoComercial 3.0 No adaptada

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