Phenomenology 2021 Symposium

Testing Lepton Flavor Universality at the Z Pole

25 May 2021, 15:45

15m

Flavor Flavor III

Speaker

LINGFENG LI (HKUST)

Description

$b\to s\tau \tau$ and $b\to c\tau \nu$ measurements are highly motivated for addressing lepton-flavor-universality-violating (LFUV) puzzles, such as $R_{D^{(\ast )}}$, $R_{J/\psi }$ and $R_{K^{(\ast )}}$ anomalies, raised by the data of LHCb, BELLE and BarBar. The planned operation of future $e^{-}{e}^{+}$ colliders as a $Z$ factory provides a great opportunity to conduct such measurements, because of its relatively high production rates and reconstruction efficiency for $B$ mesons at $Z$ pole. In this project we will pursue a systematic sensitivity study on these measurements at future $Z$ factories. The implications of the outcomes for LFUV new physics will be also explored.

Presentation materials

Slides_veryshort.pdf