Flavored circular collider: cornering New Physics at FCC-ee via flavor-changing processes

Area of Science:

• High-energy particle physics
• Beyond Standard Model physics
• Flavor physics

Background:

• The Standard Model (SM) is the current best description of fundamental particles and forces.
• Extensions to the SM are motivated by phenomena like dark matter and neutrino masses.
• Flavor physics offers a sensitive probe for new physics due to its sensitivity to high-mass scales.

Purpose of the Study:

• To explore the potential of a future high-intensity electron-positron collider at the Z pole.
• To investigate the probing power for extensions of the Standard Model through precise flavor-changing measurements.
• To constrain new physics models using flavor and electroweak measurements.

Main Methods:

• Utilizing effective field theories and simplified models inspired by B-physics data.
• Focusing on flavor-physics measurement projections at the Future Circular Collider-electron-positron (FCC-ee).
• Analyzing the interplay between flavor-physics and electroweak measurements.

Main Results:

• Demonstrated the crucial role of combined flavor and electroweak measurements in constraining new physics.
• Presented updated constraints on new physics parameters assuming no deviations from the Standard Model.
• Illustrated the potential of FCC-ee for probing new physics scenarios.

Conclusions:

• Future high-intensity e+e- colliders at the Z pole are powerful tools for New Physics searches.
• Precise flavor-changing measurements are key to uncovering physics beyond the Standard Model.
• The interplay of different measurements provides robust constraints on theoretical models.