中国物理学会高能物理分会第十三届全国粒子物理学术会议（2021）

Prompt charm parir production and prompt $\sigma(\chi_{c2})/\sigma(\chi_{c1})$ cross section ratio are first measured in LHCb $p$Pb collisions at 8.16TeV. Z boson and prompt $D^{0}$ production are also measured at LHCb 8.16 TeV $p$Pb collisions. Results are compared with theory. Prompt charm parir production observes 3 times DPS/SPS enhancement in $p$Pb compared to $pp$. $\sigma(\chi_{c2})/\sigma(\chi_{c1})$ is consistent with unity. Prodction and $R_{\rm{FB}}$ of Z boson and prompt $D^{0}$ are compatible with theoretical predictions.