Flavour-changing neutral currents making and breaking the standard model

Area of Science:

• Particle Physics
• High Energy Physics
• Beyond Standard Model Physics

Background:

• The standard model is the leading theory for fundamental particles and interactions.
• The standard model is known to be incomplete, with potential for undiscovered particles and forces.
• Flavour-changing neutral current (FCNC) decays are sensitive probes for new physics.

Purpose of the Study:

• To review recent anomalies observed in FCNC decays.
• To discuss the implications of these anomalies for the standard model.
• To highlight the potential for discovering new particles and interactions.

Main Methods:

• Analysis of experimental data from FCNC decay processes.
• Theoretical interpretation of observed deviations from standard model predictions.
• Comparative study of different FCNC decay channels.

Main Results:

• Intriguing anomalies have been observed in certain FCNC decays.
• These anomalies indicate potential deviations from standard model predictions.
• Specifically, transitions like beauty quark to strange quark decays show discrepancies.

Conclusions:

• Observed anomalies in FCNC decays suggest cracks in the standard model.
• These findings hint at the existence of new, undiscovered phenomena in particle physics.
• Further investigation of FCNC decays is crucial for advancing our understanding of fundamental physics.