Study of ${\Lambda }_b\to \Lambda \nu \bar{\nu }$ with Polarized Baryons

Chuan-Hung Chen, C. Q. Geng

We investigate the decay of ${\Lambda }_b\to \Lambda \nu \bar{\nu }$ with the polarized baryons of ${\Lambda }_b$ and $\Lambda$. With the most general hadronic form factors, we first study the decay branching ratio and t…