Speaker
Jen-Chieh Peng
(University of Illinois)
Description
High precision data of lepton angular distributions for $\gamma^*/Z$ production in $p-p$ collision at LHC, covering broad ranges of dilepton's transverse momentum ($q_T$) and rapidity were reported recently. Strong $q_T$ dependencies were observed for several angular distribution coefficients, $A_i$, including $A_0 - A_4$. Significant rapidity dependencies were also found for the coefficients $A_1$, $A_3$ and $A_4$, while $A_0$ and $A_2$ exhibit very weak rapidity dependence. Using an intuitive approach we show that the $q_T$ and rapidity dependencies of the angular distributions coefficents can be well described. Implications on other hard processes will also be discussed.
Authors
Jen-Chieh Peng
(University of Illinois)
Wen-Chen Chang
(Academia Sinica (TW))
Randall Evan McClellan
(Jefferson Lab)
Oleg Teryaev
(JINR)
