Abstract
A
bstract
The yields of prompt and non-prompt J/
ψ
and the fraction of non-prompt J/
ψ
are measured at midrapidity (|
y
| < 0.9) via the dielectron decay channel as a function of the midrapidity charged-particle multiplicity (|
η
| < 0.9) in pp collisions at
TeV. The J/
ψ
yields and the multiplicity are normalized by their average value in inelastic collisions. The multiplicity-dependent yield ratio between prompt J/
ψ
and D
0
is reported. The multiplicity is further divided into three azimuthal regions with respect to the J/
ψ
momentum: toward the J/
ψ
emission direction, transverse, or opposite to it. A stronger-than-linear increase of the self-normalized yields is observed for both prompt and non-prompt J/
ψ
production, with similar trends. This behaviour is also observed in the toward region, while a weaker increase is observed in the transverse and away regions.