Speaker
Description
We present a spurion setup called Spontaneous Flavor Violation (SFV) that allows for new physics couplings to quarks that are aligned with the Standard Model Yukawas, but do not necessarily share their hierarchies nor are family universal. We show that SFV naturally arises in theories where the quark family number and CP groups are spontaneously broken at a UV scale. In SFV extensions of the Standard Model, FCNCs are strongly suppressed via the GIM mechanism. We apply this novel flavor Ansatz to a 2HDM, showing that new physics with significant and preferential couplings to first or second generation quarks may be at the electroweak scale. The SFV Ansatz provides strong motivation to search for new physics with generation-specific couplings at colliders.
