https://indico.ihep.ac.cn//event/7614/

Zeng Hao gave a special topic about Signal Development in Silicon Strip Sensors. Yang Tao kindly pointed out a mistake in Hao’s slides: E = -▽φ.

E_{w}=delta#phi_{w}(x,z) should be E_{w}=-delta#phi_{w}(x,z)

And Liu Kai present a presentation on Observation of hc Radiative Decay hc->gam+eta’ and Evidence for hc->gam+eta.

Question from Suyu:

1 #psi^{‘}->#pi^{0}h_{c} h_{c}->#gamma#eta^{‘} #eta^{‘}->#pi^{+}#pi^{-}#eta #eta->#gamma#gamma 2 #psi^{‘}->#gamma#eta #eta->#gamma#gamma

How can we distinguish #eta in 1 and 2? Answer: Maybe we can apply a 4C or 5C fit. Question from Kai: Truly undersatnd the meaning of “evidence” and “observation” Answer: For evidence: 5#sigma or more than that For observation: 3#sigma or more than that