Footprints of the Beyond in flavor physics: Possible role of the Top Two Higgs Doublet Model

TL;DR

This paper explores how the Top Two Higgs Doublet Model could explain recent deviations from the Standard Model in flavor physics and CP violation measurements, suggesting new particles and phases at accessible energy scales.

Contribution

It investigates the potential role of the Top Two Higgs Doublet Model in accounting for observed anomalies in B-decay CP asymmetries and flavor violation.

Findings

Deviations in B-decay CP asymmetries suggest new physics.

The Top Two Higgs Doublet Model can naturally incorporate large top-quark mass.

New particles around 300 GeV to a few TeV may explain experimental deviations.

Abstract

The B-factories results provide an impressive confirmation of the Standard Model (SM) description of flavor and CP violation. Nevertheless, as more data were accumulated, deviations in the 2.5-3.5 sigma range have emerged pointing to the exciting possibility of new CP-odd phase(s) and flavor violating parameters in B-decays. Primarily this seems to be the case in the time dependent CP asymmetries in penguin dominated modes (e.g. B -> phi (eta') Ks). We discuss these and other deviations from the SM and, as an illustration of possible new physics scenarios, we examine the role of the Top Two Higgs Doublet Model. This is a simple extension of the SM obtained by adding second Higgs doublet in which the Yukawa interactions of the two Higgs doublets are assigned in order to naturally account for the large top-quark mass. Of course, many other extensions of the Standard Model could also account for these experimental deviations. Clearly if one takes these deviations seriously then some new particles in the 300 GeV to few TeV with associated new CP-odd phase(s) are needed.