New Physics Effects in $B$ Decays

TL;DR

This paper reviews recent experimental results on B decays from major facilities, highlighting their consistency with the Standard Model and discussing potential signs of new physics and the need for further validation.

Contribution

It summarizes the current status of B decay measurements, including discrepancies and theoretical models suggesting possible new physics effects.

Findings

Most measurements align with the Standard Model

Some discrepancies in CKM phase and magnitude measurements

Potential contributions from new physics models

Abstract

The two $B$-factories, Belle and BaBar, has been played major roles in the B decays study. Their wonderful design and excellent operation enables their fruitful analysis results. Also recently the Tevatron experiments, CDF and DO, join the game with their $B_S$ studies. From the experimental results of $B$ decay studies, we learn that most of measurements are consistent with the Standard Model (SM). Some discrepancies from the SM has been found in the measurements of the phases and magnitudes of CKM unitary triangle. There are also various theoretical models that possibly give the contributions. These will relay on further validation with new experimental results.