Speaker
Dr
Fanrong Xu
(Institute of Physics, Academia Sinica, Taiwan)
Description
The Bs → μ+μ− mode has finally been observed, albeit at rate 1.2σ below Standard Model (SM) value, while the rarer Bd0 → μ+μ− decay has central value close to 4 times SM expectation but with only 2.2σ significance. The measurement of CP violating phase φs has finally reached SM sensitivity. Concurrent with improved measurements at LHC Run 2, KL → π0νν and K+ → π+νν decays are being pursued in a similar time frame. We find, whether Bd0 → μ+μ− is enhanced or not, KL → π0νν can be enhanced up to the Grossman-Nir bound in the fourth generation model, correlated with some suppression of Bs → μ+μ−, and with φs remaining small.
Author
Dr
Fanrong Xu
(Institute of Physics, Academia Sinica, Taiwan)
Co-authors
George Wei-Shu Hou
(National Taiwan University (TW))
Dr
Masaya Kohda
(Chung-Yuan Christian University)
