Speaker
Antoni Szczurek
(Institute of Nuclear Physics)
Description
We present results of calculations of cross sections for production of $\eta_c$(1S)
and $\eta_c$(2S) for the LHC for $\sqrt{s}$ = 7, 8, 13 TeV.
The calculations are performed within $k_t$-factorization approach
for different unintegrated gluon distributions from the literature.
Some of UGDFs include saturation effects.
We discuss effect of the transition $g^* g^* \to \eta_c$ form factors obtained
from $c \bar c$ wave functions.
The results are compared with existing LHCb data for $\eta_c$(1S).
A range of $x_1, x_2$ and $k_{1t}, k_{2t}$ will be discussed.
A comment on UGDFs will be made.
Author
Antoni Szczurek
(Institute of Nuclear Physics)
