Flavour-changing neutral currents making and breaking the standard model

F. Archilli, M.-O. Bettler, P. Owen () and K. A. Petridis
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F. Archilli: National Institute for Subatomic Physics (Nikhef)
M.-O. Bettler: European Organization for Nuclear Research (CERN)
P. Owen: Physik-Institut, Universität Zürich
K. A. Petridis: HH Wills Physics Laboratory, University of Bristol

Nature, 2017, vol. 546, issue 7657, 221-226

Abstract: Abstract The standard model of particle physics is our best description yet of fundamental particles and their interactions, but it is known to be incomplete. As yet undiscovered particles and interactions might exist. One of the most powerful ways to search for new particles is by studying processes known as flavour-changing neutral current decays, whereby a quark changes its flavour without altering its electric charge. One example of such a transition is the decay of a beauty quark into a strange quark. Here we review some intriguing anomalies in these decays, which have revealed potential cracks in the standard model—hinting at the existence of new phenomena.

Date: 2017
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DOI: 10.1038/nature21721

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