= Nicola Cabibbo
{c}
{tag=Physicist}
{title2=1935–2010}
{wiki}
= N. Cabibbo
{c}
{synonym}
<Nicola Cabibbo> organized decay <probability amplitudes> of the <weak interaction> through a single mixing angle. His 1963 paper related <strangeness>-conserving and <strangeness>-changing processes within a symmetry-based weak current. In modern quark notation, the combination $d^{\prime}=d\cos\theta_C+s\sin\theta_C$ expresses this <quark mixing>: the relative strengths depend on one <Cabibbo angle>. Comparing different decay rates therefore tests one common structure instead of fitting every weak channel independently. The quark notation is a later interpretation of the original current construction.<Unitary Symmetry and Leptonic Decays by Nicola Cabibbo>[1963, weak-current assumptions and one-angle relation among decay amplitudes; modern quark illustration]{ref}
A <physicist> working on <quark mixing>.<Nicola Cabibbo (1935-2010) by CERN>[Independent professional identity]{ref}
\Image[https://commons.wikimedia.org/wiki/Special:Redirect/file/Nicola_Cabibbo.jpg?width=260]
{title=Portrait of <Nicola Cabibbo>}
{description=Marcella Bona. https://creativecommons.org/licenses/by-sa/2.0/[CC BY-SA 2.0], via Wikimedia Commons.}
{source=https://commons.wikimedia.org/wiki/File:Nicola_Cabibbo.jpg}
{width=260}
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